Chevrolet Trailblazer 2021: Retiros, Quejas y Ley de Limón de California

I needed to have my muffler welded in November to pass inspection. I was told I would likely need the entire thing replaced in a year. I now hear another exhaust leak, and I’m preparing for a hefty car travel and have to deal with trying to get it fixed in 10 days time. This is ridiculous on a 5 year old car that I have only had two year. This needs to be a recall, insane to have to pay for a whole replacement.

NHTSA #11738187

When you put the vehicle in park, it does not register on the dash that the vehicle is in park so therefore you cannot turn the vehicle off. I’ve read this as well known in the 2021 trailblazers

NHTSA #11731220

While driving on the highway, I heard a loud pop that made me flinch and swerve. After parking I noticed the glass in the sunroof had exploded upward like a volcano, leaving a large hole. Fortunately the shade was closed, or glass would have come into the car while I was driving.

NHTSA #11726763

My transmission is defective and past 60,000 miles but only a little. I had a diagnosis and it needs replacing like many of these trailblazers in the ongoing lawsuit. I cannot pay for it and it should not be broken!

NHTSA #11723367

I am reporting a serious safety issue with my 2021 Chevrolet Trailblazer related to transmission failure. The vehicle has approximately 83,000 miles. While driving, the vehicle experiences a sudden loss of power when attempting to accelerate. In some instances, the vehicle has stalled or shut off while I was actively driving, creating a dangerous situation, especially when merging into traffic or driving through intersections. The issue is intermittent but has become more frequent over time. The vehicle does not respond properly when the accelerator is pressed, and there is a noticeable delay or complete lack of power. At times, the vehicle will not move as expected, which poses a significant safety risk. Diagnostic codes associated with this issue include P2714 and P0700, which indicate a transmission-related malfunction. I have been advised that the vehicle requires a full transmission replacement. This failure occurred at relatively low mileage for a major powertrain component, and I am concerned this may indicate a broader defect. The stalling and loss of power create a hazardous driving condition that could result in an accident. I am submitting this complaint to report a potential safety defect and to request further investigation into this issue.

NHTSA #11734472

The contact owns a 2021 Chevrolet Trailblazer. The contact stated that while attempting to park, the vehicle failed to shift into park properly, and the message “Vehicle Not in Park” was displayed. The contact stated that several attempts were needed before the transmission was able to be shifted into park. The vehicle was taken to the dealer, where it was diagnosed and determined that the shifter gear assembly had failed and needed to be replaced. The vehicle was repaired. The manufacturer was made aware of the failure. The approximate failure mileage was 40,000.

NHTSA #11696558

While driving down the interstate my 2021 Chevy Trailblazer suddenly flashed "Battery Saver Mode" on the dash and shut off completely. I was able to coast to the side of the road and call for help. This was a MAJOR safety issue as my 4 year old son was riding with me and we could've caused or gotten into a serious accident. There were no previous warnings and no Check Engine Light came on prior to it shutting off--I had been having no issues. The car will not turn on and when attempting to, it makes a screeching noise. I had to get it towed to a local service center who stated my car has "catastrophic engine failure". They advised the issue could be either "timing chain or a dropped valve"--unable to confirm until they take the engine apart completely. They denied issues with the battery or starter and said the engine was completely blown. There was less than 120k miles on it and i kept up with maintenance.

NHTSA #11731702

2021 Chevrolet Trailblazer RS (123,000) - Coolant control Valve failure Cooling issues after 20-25 mins of driving. No Check engine lights initially just temperature gauge climbing. After 3 day of trying to drive to and from work. "Engine reduced" and P3075 code. Had it towed to dealership, in which they replaced the water pump. This DID NOT fix the issue. The next two drives (from work, and to work), I had to pull off the road several times to get the car cooled down, and run heater on full blast to drop temperature. Pulling off the road in heavy interstate traffic consistently because of the Coolant Control Valve (25207464 GM). Not to mention me, looking at the temp gauge most of the way to work, versus eyes on the road. The old thermostats would at least give you a temperature code, and not an Engine Coolant Flow Too Low error which leads to water pump being replaced erroneously. Going to plastic control valve next to a hot engine, sounds as good as plastic car jacks for this car. Oh, wait, that happened to me as well, and they recalled it after it broke on me at 2 am in the morning.

NHTSA #11731922

I was driving an hour away from home and suddenly my muffler and exhaust started dragging— 49,000 miles, 5 years old AND just passed inspection A WEEK AGO. Luckily, it didn’t become completely unattached because that could have caused an accident as there were cars behind me. Complete safety hazard

NHTSA #11722752

My 2021 chevy trailblazer rs is experiencing issues with the infotainment system and the onstar module they have stopped working and I have no backup camera and this issue is a safety concern to me and anyone who rides with me i have contacted both gm and onstar and got nowhere with them after I had a diagnostic test done on 6/18/26 they recommended replacement of the whole system

NHTSA #11745155

Amplifier lost connection, so speakers won’t work, collision warning won’t sound, and turn signal won’t sound.

NHTSA #11742150

Put vehicle into park, attempt to turn off car, get message shift to park after the vehicle is already in park. Vehicle keeps message shift to park not allowing car to fully turn off even though car is not started it keeps flashing message shift to park and system such as radio will not turn off as the car thinks it's not in park even though it already is.

NHTSA #11673827

I get a shift to park warning after putting the car into park. I’m not able to turn the car off, this has drained the battery and caused safety issues for me and my child

NHTSA #11677858

After trying to remove rhe key from ignition, it gets stuck and won't come out unless I turn the car on, shift it into drive, wiggle the steering wheel, and try it again. Sometimes it works. Alot of times it take 5-10 min to get it out.

NHTSA #11706396

When I place my car in park, a "shift to park" message appears on the dashboard. I am unable to fully turn my car off and the car will ding at me. I have tried driving around the parking lot, pushing the shifter from side to side and into another gear then park again, going forward and backward, but the problem still exists. It started to occur more frequently, until it occurred every time I drove the car. I'm not sure if the car is actually in park, so when I finally get it to turn off, I place the emergency brake on. I can not physically turn the car off when this message appears on the dashboard. I took the vehicle to the service center of the dealer on 11/12/2024. I was told this has been a big problem with GM cars and they have had many cars coming in with the same problem. Currently the part is on backorder, and there is not an ETA as to when it will be available due to high demand for this part.

NHTSA #11626823

Getting error message for shift to park not found when vehicle is in park. Chevy already has a recall for this but my vin is not one showing it is affected. Vehicle is at the dealer now for diagnosis and repair.

NHTSA #11658663

The brake pedal goes to the floor and does not want to stop. There is a brake failure meesage on the dash.

NHTSA #11599338

The brakes make squealing sound when coming to a stop. the dealer has acknowledged the problem and said there is nothing they can do about it and that the problem is normal. It is not normal for brakes to squeak every time the car stops.

NHTSA #11464302

2021 Chevrolet Trailblazer check engine code P1467

NHTSA #11698851

On 2/21/25 when I turn on vehicle the engine light came on. I checked for the code and it was P1467 for the Evap Purge Pump. I checked for the gas pump cover and didn't see anything damaged and closed it tight but engine light still on. I feel the gas or engine smell is also coming through the inside of car when fan is turned on and not safe health wise.

NHTSA #11644597

Strong gasoline smell noticed inside and outside vehicle. Took vehicle to dealership 3/1/24 where the smell was confirmed. Fuel rail was found to be leaking. Dealership removed and replaced all components damaged with leak. This problem started again Friday, 8/23/24. Did not resolve and got stronger. Car will be going back to the dealership Monday, 8/26/24 for evaluation.

NHTSA #11610750

On [XXX] while driving on the highway my check engine light came on. The car turned off while going 60MPH on the 18 mile stretch towards Miami from Key west and luckily there were no cars around me. I checked for the code and it was P1467 for the Evap Purge Pump. I took it to a dealership in Miami and they told me it would be fine to drive that the part needed to be replaced. I drove back to key west and bought the replacement part. That same part did not work. I checked to see if the part was receiving voltage and it was. So i will continue with going to the dealership. My wife and son have developed a cough from having to constantly smell the fumes due to their existing asthma. I will never buy another chevy again.

NHTSA #11649945

IN January my fuel gage stopped working , unable to know how much gas I had. The fuel pump and floater needed to be replaced If fuel was not getting to the engine the vehicle would stop working causing a possible accident with other drivers . I did not use this vehicle for many days until a mechanic cleared for useage . It cost me $320.00 of my own money to fix this for safety concerns. As of today 1/22/25 I has been fixed by A-Plus in North Fort Myers.

NHTSA #11637782

Month of June of 2024 I purchased 2021 Chevrolet Trailblazer LT with 31k miles on the odometer I had to service my vehicle and had to replace the fuel pump, took weeks to get in due to the strike that took place, Chevrolet will not back behind their employees nor their consumers. They only honored me 15pts on my vehicle, a few months pass and more issues arise one being the manifold sensor (a) and then another two days on the road the wiring harness thankfully my car was under a secondary warranty and I paid $200 per repair, although this became a very costly month being $600 car payment and $400 in repairs in a matter of a few months owning the vehicle, I am having similar issues again with the wiring harness a year later.

NHTSA #11666643

My vehicle displayed a Shift to Park message even though I was already in Park. I could not turn off the engine, I could not lock my car. I had to go back into Drive and then Park mode and wiggle the shifter multiple times to get it to recognize Park and turn off the car. This is now happening almost every time I drive the car. I did an internet search to see how to rectify the problem only to find that this exact issue has plagued GM vehicles for a decade and they still have not chosen to rectify the faulty part. There have been multiple recalls and class action lawsuits for the SHIFT TO PARK fault but not for my vehicle year YET! There are many Trailblazer owners who are experiencing this exact issue (on online forums) and GM so far is refusing to take responsibility and issue a recall to fix the issue for owners and also to stop using this faulty system in their cars. I have reached out to GM about this multiple times the past few weeks and requested they pay for diagnostic and fix the problem because it is a common and known problem with GM vehicles but they want me to pay for it myself and the repair and then they may decide to help out - unacceptable in my opinion. To be honest there needs to be a recall NOW and GM needs to be forced to change the components in all new models to stop this happening in future models going forward. This problem can cause the car battery to drain, it can cause the vehicle to roll away if it’s not recognizing it’s in Park. Thankfully that hasn’t happened to me but others have had this happen. Not being able to shut the engine off or lock my car is a problem. This is a safety issue that needs addressing. I have lots of messages and communication from General Motors which I have attempted to attach the screenshots with the photo below but get an error message on the upload page.

NHTSA #11683489

The contact owns a 2021 Chevrolet Trailblazer. The contact stated that while attempting to remove the key from the ignition, the key remained stuck in the ignition cylinder. The contact had to turn off and restart the vehicle several times to be able to remove the key. The contact stated that the failure occurred intermittently. The vehicle was taken to the dealer who sprayed the ignition cylinder to clean the cylinder; however, the failure persisted. The vehicle was returned to the dealer who diagnosed that the shift lock mechanism failed to recognize that the vehicle was in park(P). The shifter assembly was replaced. The manufacturer was informed of the failure and opened a case. The manufacturer referred the contact to the NHTSA Hotline to report the failure. The failure mileage was approximately 20,000.

NHTSA #11665088

The contact owns a 2021 Chevrolet Trailblazer. The contact stated that while stopped at stop light, the vehicle shut off with the check engine warning light illuminated. Due to the failure, the vehicle was towed to a dealer and the transmission was repaired. Despite the repair, the vehicle continued to shut off without warning. One day while driving 60 MPH, the vehicle shut off without warning, and the contact was stranded in the middle of the highway. The vehicle failed to restart after several attempts even with assistance from the Highway Patrol. Due to the failure, the vehicle was towed to the residence and remained at the residence unrepaired. The manufacturer was not notified of the failure. The failure mileage was unknown.

NHTSA #11681574

On 5 separate occasions the windshield wipers have stopped working while in use. The wipers returned to the home position and would not turn back on. Each time I had to get safely to the side of the road and stop shut the car off while travelling at highway speeds. After 10-15 minutes the wipers began working until the next incident. My safety as well as others on the road I was travelling were put at risk as I was not able to see out of the front windshield. The vehicle has not been inspected by anyone other than me. This is the fifth time this condition has presented itself and there were no warning lamps, messages, or symptoms prior to each occurrence.

NHTSA #11662462

Wiper system failed. No function of front wipers. Issue occurred on freeway, in heavy rain conditions, with fast moving traffic surrounding. Visibility with the inability to clear the windshield was at a minimum or not possible. Required pulling over, could have easily caused collision with no forward vision. Vehicle is currently at a dealership for evaluation. Previously brought into dealership, “no problem found” reported by the dealership mechanics. Three separate occurrences of this issue. No other warnings or lights associated.

NHTSA #11516507

Front wipers spray only on one side, the working side changes, sometimes it only squirts on one side, sometimes it sprays over top the roof of the car, sometimes it doesn't work at all. Reservoir is full, rear window spray nozzles always work properly. I'm unable to wash away debris, in winter with snowy roads it can leave salty/muddy windows. Sap from the trees & pollen create poor visibility. No warning lights are on, never have been. This happened without incident.

NHTSA #11516628

While driving on Thursday, June 4, 2026, the vehicle experienced a sudden and complete failure of the electronic braking/power brake assist system. Simultaneously, multiple safety warnings illuminated on the dashboard display, including a persistent service wrench icon, a traction control warning light, and a lane-keep assist indicator light. Due to the loss of brake assistance, the vehicle was unsafe to operate and had to be towed/driven directly to a licensed dealership for emergency diagnosis. The dealership technicians subsequently inspected the vehicle and reported that the entire electronic braking system had suffered a total failure and is completely non-functional. Despite multiple technical service bulletins and recalls issued for similar vehicle builds regarding electronic brake boost interruptions and mechanical brake vacuum pump failures, I am being forced to pay for these critical safety repairs out of pocket. A sudden loss of braking power poses an immediate crash hazard, and I am filing this report to urge the NHTSA to investigate why this manufacturing defect is not covered under an active safety recall for this specific vehicle configuration.

NHTSA #11742380

The car will all of a sudden make a loud popping noise through the radio. It is enough to scare someone while they are driving and have a wreck. The brakes are very touchy to the point of almost giving you whiplash

NHTSA #11544617

The contact owns a 2021 Chevrolet Trailblazer. The contact stated that after reversing, the transmission was shifted to drive (D), but the vehicle failed to immediately recognize the selected gear. The check engine warning later illuminated. The vehicle was taken to an independent mechanic, who determined that the under boost, transmission control module, and transmission control solenoid had failed, and there was a loss of communication with the radio and loss of communication with the telematic control module. The mechanic advised the contact to take the vehicle to the dealer for assistance. The vehicle was not repaired. The manufacturer was made aware of the failure and advised the contact to report the failure to the NHTSA Hotline. The failure mileage was approximately 42,000.

NHTSA #11693768

My 2021 Chevy Trailblazer has an error reading “shift to Park” that randomly appeared 2 weeks ago, now is doing it almost every time I stop my car, error has also cause my battery to die. When error is showing my car will not shut off. Took to a Chevy dealer and recommended changing the gear shift assembly, can’t guarantee it will fix the problem. They have ordered the part but $450 plus parts and labor for not a guarantee is concerning. I also travel for work and have been left stranded because of this issue.

NHTSA #11612155

The issue is the yellow engine light lit up on the dash of my 2021 Trailblazer in late August of 2025. At the same time, the cluster displayed the message "Engine Power is Reduced". Over the next few weeks my car engine would randomly stall out while I was driving! As you can imagine, this is a very unsafe driving condition. My car stalls and I'm in traffic and have no ability at all to control the vehicle. This happened at least 4 times to me. When I checked the On Board Diagnostic codes on my vehicle the system reported back U060F (Mass Air Flow Sensor). I searched online for this condition with 2021 Trailblazers and found GM Service Bulletin number 22-NA-008, dated March of 2022. This Service Bulletin clearly shows that Chevrolet were well aware of a problem years before it occurred to my vehicle. So, in October I took my car to Bowman Auto Center, explained all of the above to them, and I mentioned the Service Bulletin that I found. Their investigation found that, indeed, the cause of my engine stalling was broken wires to the Mass Air Flow sensor (MAF sensor). Bowman repaired my car and billed me 364.44 as shown on the attached 2-page Repair Order. I tried to make the case with the Bowman Service Department that this should be a warranty repair, and paid by GM. Bowman responded that it was only a Service Bulletin from GM for the issue, and the customer is responsible for payment. I am astonished that repair of this product Design Failure, which results in an unsafe driving condition, would be paid for by the customer! The reason I call it a Design Failure is because NO wiring should break during the life of a vehicle. Engines rock and move, and the Trailblazer design should have compensated for this engine movement by having a sufficient slack loop designed into the wire harness leading to the Mass Air Flow sensor. I filed a case with Chevrolet, number 80982656, but they declined my request for reimbursement .

NHTSA #11700638

My vehicle keeps flashing: "Shift to park" when I am in park and then my car is unable to shut off the battery even though I'm in park and our of the vehicle

NHTSA #11652696

The vehicle keeps vibrating binding lurching jumping when driving going in reverse and turning the car in a circle I took it in they replaces they rear end and transfer case on it there was a lot of metal shavings in both no clue or explanation why got the vehicle back over a month later to the same problems as before took it back in they went for a test drive with us and verified its still happening and that day they shrugged shoulders they dont know why or what's happing they supposedly got ahold of trailblazer and they said this is normal for these vehicles and safe to drive .the vehicle dont sound or feel very safe at all I am reaching out for help with this the vehicle does this every time you drive it

NHTSA #11667632

When I shift the gear from PARK to DRIVE & step on the GAS, the vehicle hesitates to DRIVE. I have to turn off my vehicle, play with the gear shift, then shift again to get it to move. The other day I put my vehicle in DRIVE and it rolled back and REVERSED. Nobody can figure out what’s wrong with my vehicle. The check engine light comes on then goes off. Nobody can get the problem to duplicate. A ticket to GMC was submitted and from them, my vehicle seems fine on paper. This is a safety hazard. I’ve taken my vehicle to a Chevy dealer and also to a GMC dealer multiple times.

NHTSA #11513067

I could turn off the engine after driving, but the key stays in the position between the engine being on and the car being off (for example when you can listen to music but your car isn’t running). The battery light came on after the issue started and so the car service place charged us to replace the battery, because they had to turn on and of the car a lot and the car had to continue to run. I took it to a car service place and they ran tests and called Chevy test support to run diagnosis tests. They can’t figure it out. They think it might be the body control module. Not sure what that is. The car only has 31,000 miles on it and this is a safety issue because what if this happens and the steering wheel locks or it becomes a rolling hazard. This would affect the driver and others. There were no lights or errors indicating a problem before this happened.

NHTSA #11657328

Found standing water in spare tire well. Back seat constantly wet, growing mold. The whole back area is moldy, mold under driver seat. My back passenger door seal has mold and water. Seat belts in back, MOLD. I had to wear a mask just to drive to the store. The mold turning black the day I took it to a shop for a water test. It's been two days and I still haven't heard anything about the water test.

NHTSA #11636360

A loud popping noise heard through the radio when light pressure applied to brakes. Noise loud enough to scare the hell out of all the occupants in the car. Brakes squeaked when car was in reverse. Tried to slow down on wet pavement. Car started to veer to the right. Forward collision warning nor automatic emergency braking worked. Pushed brake all the way to the floor and the car did not slow. Rear ended another car. No airbags deployed. My passenger was okay. I got diagnosed with a concussion. Do not know if the occupants in the other car were injured.

Reportado presuntamente: 2 lesiones (según lo reportado a NHTSA). NHTSA #11643617

Brakes failed and myself and others were in harms way. To my knowledge the car was totaled as the air bags did deploy.

Reportado presuntamente: 1 lesión (según lo reportado a NHTSA). NHTSA #11527819

The pick up on the vehicle is losing power it seems not letting the RPM's Go up or drop down before taking off. This cause the vehicle to move slower than normal Code keeps popping up losing power engine while drive and engine light comes on this goes on for about a week or so than stops and engine light disappear and reappears again.

NHTSA #11611300

I’m just adding confirmation to my solenoid/waste gate/ turbo system reduced engine power on the 2021 trailblazer around 23,000 miles . [XXX] , Raleigh n.c INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA #11600291

The contact owns a 2021 Chevrolet Trailblazer. The contact stated that during inclement weather, water accumulated inside all four door panels. The contact stated no warning light was illuminated. The vehicle was taken to the local dealer and the contact was informed that the failure was common in the year, make, and model vehicle. The vehicle was not repaired. The manufacturer had been informed of the failure. The failure mileage was 23,520.

NHTSA #11532225

I was driving on the freeway and my panoramic moonroof literally exploded from the inside out. It sounded like a gunshot almost. Then the glass shattered. I am glad that the screen was closed otherwise all the glass would have gotten in my car.

NHTSA #11435288

Dealership Linwood inspected vehicle and certified power and ground module has internal fault-faulty front camera module.

NHTSA #11742562

The contact owns a 2021 Chevrolet Trailblazer. The contact stated that while driving approximately 70 MPH, the brakes became inoperative. The message "Brake Failure - Speed Reduced to 53 MPH – Service Required" was displayed on the instrument panel. The vehicle was taken to a dealer; however, the dealer stated that the vehicle could not be diagnosed because diagnostic tests were available only by appointment. The dealer informed the contact that the computer software needed to be reset to drive the vehicle back to the residence. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure and provided the contact information about a recall; however, the VIN was not under recall. The failure mileage was approximately 135,884.

NHTSA #11722954

When stopped at a red light & the light turns green & I accelerate, the vehicle does not move. It makes a loud noise and jumps. This happens way too many times. There’s also an issue with the brakes, when you press on them, you can hear something grinding, which should not be happening because I bought the car brand new. Also the brakes have always been super squeaky, which is very frustrating because they should not be with a brand new car once again. The engine light goes on and off randomly and doesn’t say anything.

NHTSA #11726811

Shift to park message coming on, not allowing vehicle shutoff. No inspection yet, in looking up issue, was prompted to report.

NHTSA #11715160

Experiencing reduced speed, rattling noise, check engine light, power steering light on. Chevy app shows throttle control system and antilock break system error messages. Took to Chev dealership. Advised it was fuel injector (1 /4 was burned out). Had all 4 replaced ($3000). Picked up car on a Friday, vehicle was having the same issues next day Saturday. Took it back on Monday, it is now Wednesday and they’re saying it’s the turbo charger now (another $3000). Mechanic couldn’t figure out what the issue was so it took 3 days for him to now say it’s the turbo charger. I think it was the turbo charger from the get go! What’s the purpose of the diagnostics ($250)? Isn’t it to pinpointed the issue? 1st day, took him 4 hours to say it was the fuel injector. 2nd time around it took 3 days. I kept showing them and telling them it’s the throttle control system! They’re trying to rip me off! Mechanic is saying he’s been test driving it and no issues. I took a photo of my mileage before I handed them my car and it was 79,190. The mileage today says 79,191. How and where is he test driving it if it’s only been 1 mile? Reverse and forward ? They’re lying

NHTSA #11690808

While driving, a service warning came on that reads "Service Power Steering" - when that came on, the brakes ceased to work properly and required significant force, causing a big delay in braking. It is not safe to drive due to the limited braking. This mirrors the recall situation for other 2021 Trailblazer models with the interrupted brake sensor.

NHTSA #11685359

vThe contact owns a 2021 Chevrolet Blazer. The contact stated that while driving at an undisclosed speed, there was an abnormal sound coming from the vehicle. No warning lights were illuminated. The vehicle was taken to the dealer, where it was diagnosed with a crack between the muffler and front pipe. The contact was informed that the muffler needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure but provided no assistance. The contact was advised to contact the NHTSA Hotline to report the failure. The failure mileage was approximately 57,850.

NHTSA #11678883

Vehicle Diagnostic Summary – Trouble Codes Explained 1. P0562 – System Voltage Low The vehicle’s electrical system is running at low voltage. This could be due to a weak battery, a failing alternator, or poor electrical connections. It may cause various electronic issues and unexpected shutdowns if not fixed. 2. P1005 – Fuel Level Sensor Control Module: Too Many Resets The fuel level sensor module has been reset too many times, likely due to electrical glitches. This may cause the fuel gauge to be inaccurate or unstable. 3. P14C0 / P14CD – Fuel Pump Driver Control Module Signal Error There is a configuration signal error from the fuel pump control module. This could lead to fuel delivery problems, starting issues, or engine stalling if it worsens. 4. U0151 – Lost Communication with Airbag Control Module (SRS) The system lost contact with the airbag diagnostic module. This may affect airbag deployment during a crash, making it a serious safety concern.

NHTSA #11676063

This vehicle was sold as new when this vehicle had a defective Turbo Underboost issue from a ECM Issue previously prior to the 2022 Trailblazer being sold to us. This vehicle has a shift to park issue which sticks when you try to Park the vehicle. Next This vehicle has had 4 prior incidents of attempted repair of this Turbo Underboost and a failure to pass emissions which lead to the engine and transmission failure of this vehicle. I have waited since July 6, 2025 of this vehicle being in the shop no rental no loaner. Now no replacement vehicle. For more than nine months and a General Motors open claim since 07/06/2025! GM is hiding the truth about Recalls and Road Hazards not listed to vehicle like this 2021 Trailblazer and other GM vehicles that GM refuses to replace and cannot repair or cover the additional financial hardship placed on unwitting consumer as they sell defective vehicle wholesale or as new vehicles through Chevrolet Dealership across this goble. We must STOP this from happening. GM is not even honoring the Government Guidelines forcing victims to hire counsel to buy time and prevent massive Recalls like ours.

NHTSA #11720307

There is a faulty sensor on this car that does not allow the car to be properly parked and gives the error message "Shift to park" on the dashboard. You have to turn the car back on and mess with the shifter multiple times to get it to register that it is park. This usually takes about 10 attempts every time you need to park the car. There are other reports regarding this exact issue on this car that further validates that this issue is relevant and needs to be addressed through a recall.

NHTSA #11695946

The contact owns a 2021 Chevrolet Trailblazer. The contact stated that while driving approximately 40 MPH, the vehicle stalled. During the failure, several unknown warning lights illuminated, and the vehicle was jump-started. The Auto START/STOP function was disabled for the vehicle to operate properly. The vehicle was inspected by an independent mechanic; however, the failure could not be duplicated. The contact replaced the battery, and the failure was almost resolved. Additionally, while depressing the brake pedal, the vehicle failed to stop as needed. The issue was not diagnosed or repaired. The contact stated that while starting the vehicle, the RPM was abnormally elevated, and the vehicle jerked abnormally while shifting gears. The manufacturer was not notified of the failure. The vehicle was not diagnosed or repaired. The approximate failure mileage was 75,000.

NHTSA #11734601

The contact owns a 2021 Chevrolet Trailblazer. The contact stated while driving at an undisclosed speed, the vehicle inadvertently lost motive power and was unable to accelerate above 40 MPH. The contact stated that after the failure, the vehicle went into LIMP Mode. The check engine warning light was illuminated. The vehicle was taken to the dealer, who diagnosed a failure with the variable valve timing system. Additionally, the dealer found that the intake camshaft actuator was incorrectly positioned, resulting in damages to the exhaust camshaft. The vehicle was not repaired. After investigating the failure, the contact related the failure to NHTSA Campaign Number: 25V274000 (Engine and Engine Cooling), but the VIN was not included. The manufacturer was notified of the failure but provided no assistance. The failure mileage was 81,000.

NHTSA #11666344

Check engine light is on. Took to O'Reilly and had them put their tester on it to get the codes. Codes show P0700 and P1467. My cruise control and auto start will not work. My mechanic said this is an issue that should be fixed free of charge but no recalls show for my vehicle.

NHTSA #11656877

Engine power reduced came on after I was driving from a patient’s home. My car started driving very rough. I had to pull over because I was in danger of being hit from behind. I took my car to a mechanic and was diagnosed with the code DTC P2714. I looked online and there are a lot of people having this issue and being put in dangerous situations when we drive. Chevy knows about the issue and has not issued any recalls. Unfortunately for me my vehicle is past the limited warranty so now I have to save up money to get my transmission serviced. I’m never buying American again. I could’ve been really hurt when my engine cut off.

NHTSA #11645476

I have brought my car into the dealership over the last few years at least 6 times for the same issues. Currently there are two codes coming up as permanent on my car which is for the Evaporative Emission System Flow and Brake Booster Hydraulics performance. I drive my child of three every day and the number of times my check engine light comes on and goes into reduced engine power is not okay nor safe.

NHTSA #11633315

On [XXX] I shifted my 2021 Chevy Trailblazer to park and and was unable to shut off the vehicle. When I shifted it to park it kept displaying an error "Shift to Park" on the dashboard, but the shifter knob was correctly in park. I attempted to press the power button to turn off the car and it wouldnt do anything but beep. I tried multiple times to shift to park to get the car to recognize it was actually in park and turn off the vehicle but I was unable to do so. I was frantic and panicked to find I could not turn off my vehicle as I park on a apartment complex lot. That day I took the car to Henna Chevrolet in Austin Tx for repair. They said the part was on backorder from GM with no ETA. It is now November 1st and there is still no ETA on when I will get the part for my car from GM. This has been going on for 3 weeks now with no end. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA #11623129

The rear shocks on the 2021 trailblazer are faulty and are blowing out causing the rear tires to bounce and eat away at the tread exposing cords becoming a safety hazard. The rear shocks blowing out is happening on several 2021 Trailblazers causing there to be a national back order leaving these vehicles and drivers to be at risk of serious accidents and injuries.

NHTSA #11616242

What component or system failed or malfunctioned, and is it available for inspection upon request? - The shift lever/gear control malfunctions when trying to put the vehicle in park. The vehicle once the lever is in park on the dashboard it will say !Place vehicle in park. When it is in park you can't open the doors or turn off the vehicle. You can try to jiggle the shift lever but it doesn't move out of park. How was your safety or the safety of others put at risk? - Unable to get out of the vehicle, the system locks the doors. Has the problem been reproduced or confirmed by a dealer or independent service center? - It has occurred at the beginning of the year. No it hasn't been confirmed by a dealer or independent service center. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? - No Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? - Once you put the shift lever in park and try to turn off the car the warning lamp comes on and says Place in park. But the shift lever is in park. You are unable to move the shift lever. I don't know the exact date it first started happening but I believe it was at the beginning of the year.

NHTSA #11615442

Model # CC398GYU, purchased in April of 2024 needs to be included in the foam head rest recall because the foam is accessible by my toddler. The foam presents a choking hazard. It is not secure and the foam is exposed.

NHTSA #11656803

Service power steering light It turns on and off frequently

NHTSA #11616806

05/29/24 I took this vehicle to Cronic Chevrolet in Griffin, Ga due to check engine light being on. Code detected purge pump it was still under warranty at that time only had 43,906 miles on had to get the purge pump replaced. Several weeks after getting it back I kept getting a shift to park message come up when trying to put it in park then started having trouble getting it to go into drive. I have had so many close calls from people almost bashing into me because my car will not go into drive and you constantly have to switch in and out of gears for it to finally go in. Its sucking the had right out due to it not shifting gears properly. The code reader detected transmission control module which I find to be faulty and understand there are serval recalls on this specific vehicle , when it started this issue it didn’t even have 50,000 miles on it!

NHTSA #11613947

I first noticed an issue about a year ago when an electrical blaring noise was coming from my speakers followed by popping and crackling noises. I have taken my car into the dealership several times without resolution. Since then, I have noticed excessive humidity in the vehicle and recently found the trunk was flooded. I took the vehicle in to the dealership again, and they say the interior fabric is compromised now and the electrical sounds I was experiencing are coming from electrical damage inside the body. I have now read another review online from someone who had the exact same experience with this make and model. I believe this is a safety hazard to drivers who are unknowingly driving around for months in a vehicle that could be flooding and could cause severe damages like in my case. I have documents to support these claims, but I do not have electronic copies. If someone reaches out to me I can provide hard copies.

NHTSA #11602667

there are no tethering clips at the base of the rear seat to secure a child's car seat. The bottom of the rear seat shows they should be there but the dealer confirms they are not . This is an immediate and dangerous problem and puts any child in a car seat in a chevy trail blazer at risk. Not sure how I'm going to secure the granddaughter's car seat safely .

NHTSA #11578046

My issue is with the vehicle's car seat latches. The latches in the Chevy Trailblazer (Manufactured) are designed in a way that is unsafe and also hard to install a car seat for children who are 2 and under or under 40 pounds. Car seat safety is important for all children as it could lead to damages of the head, neck, and or spine. I have installed 4 car seats in my vehicle (Chevy Trailblazer) with it being difficult but overcoming the problem. However, the car seat detaches itself due to the location of the latch (Vertically Slanted). After using the car seat multiple times, it cannot withstand the tension due to the location of the latch which then releases itself from the latch, potentially allowing for more problems to occur and is concerning for the safety of a child. I have, as of now, not have to deal with this problem with other manufacturers like Toyota, Kia, Tesla, Volkswagen, and Honda, where the latch is horizontal. The latch on GMs Vehicles is Vertically Slanted and located left or right of the manufacturers noted car seat latch display/button on the seat. I have only seen the Chevy Trailblazer (My Vehicle) and the GMC Yukon with this problem. I am sure there are others.

NHTSA #11576177

Shortly after purchase, one of the factory tires had a side bulge. The dealer indicated in their opinion, was from a pot hole. However when they checked the rim, it was not damaged. I had tire replaced. Then at 39K miles, all the the other tires were already getting worn out. I've NEVER had tires wear about pre-40K miles in all my life. At local belle tire, they told me that the Hankook tires that come with new cars are not the same quality as those you would buy at tire store. But I submitted a replacement claim to Hankook, as the belle tire rep suggested, but they would not honor anything. Simply said need tire insurance. I notice when buying the car new, the dealers offer extra (cost) tire insurance. Must be because the are lousy, compared to buying at a local tire store. Now at 42K I'm replacing tires already. New cars should come with same quality tires as you buy at tire stores. And I will tell everyone about poor quality of Hankook brand.

NHTSA #11566471

The contact owns a 2021 Chevrolet Trailblazer. The contact stated that while operating the vehicle at night, while reversing the vehicle, the back-up camera image became extremely bright creating a visibility hazard for the driver. The contact stated that the display screen was too bright to see images at the rear of the vehicle. Additionally, while driving at an undisclosed speed, there was an extremely loud audible squealing sound inside the cabin of the vehicle. The contact stated that after a while, the vehicle ceased. The cause of the failure was not yet determined. The manufacturer and local dealer were not notified of the failure. The failure mileage was 32,000.

NHTSA #11561456

The contact owns a 2021 Chevrolet Trailblazer. The contact stated that while driving at various speeds, an abnormal fuel odor was coming from the vehicle, without warning. While in traffic, the contact started feeling dizzy and pulled over. The contact’s son who was following her vehicle, also stated that he could smell fuel upon approaching the vehicle. The following day, the vehicle was taken to a dealer where the mechanic discovered a crack in the fuel rail. Upon investigation, the contact discovered Service Bulletin: PIP5765, which she linked to the failure. The manufacturer was notified of the failure, and the contact was provided a case number. The vehicle was not repaired. The failure mileage was approximately 21,000.

NHTSA #11516298

While traveling down the road at approximatly 35-40 mph with my two minor children, the steering was not responding properly and the car kept attempting to veer to the right. I let off the gas to slow down since the brakes were also not seeming to respond well. Upon attempting to brake and execute a left hand turn, the car would not turn at all despite the steering wheel being as turned as far to the left as possible, the lights began flashing on the dashboard for "PowerSteering" ESC warning. We ended up going through the intersection without stopping and narrowly missed another car in intersection and went completely off the road into a snowbank. Fortunately we were not injured. We drove the vehicle back home (approximately one mile) by overpowering the steering and manually forcing the car to stay on the road. Throughout the lane assist kept attempting to autocorrect and drive us off the road. The car was damaged by the impact and the mechanic said that the tie rod is bent and has no idea what could have caused this to happen. I am somehow now responsible for the situation. I have asked what caused the power steering to fail, and Chevy claims that they have no record of any power steering issues (which research has shown to be untrue) and in order to determine IF it failed and/or why, they need to make the repair and then run additional tests to re-create the issue. This car only has 21,000 miles on it, and has never been in an accident before this.

NHTSA #11500332

Popping sound from passenger side front speakers when releasing the brake pedal after a stop. Vehicle in drive.

NHTSA #11497659

Someone pulled out in front of me going 45 mph and totaled my car when they smashed into the front drivers side of my vehicle. My airbags didn’t deploy and no warning notifications or emergency braking ever occurred. This is dangerous and was severe enough to total my vehicle. My airbags should have deployed. No warning lights or any other issues when it occurred. It was inspected by insurance and determined a total loss.

NHTSA #11497875

"Shortage in radio" according to Chevrolet's diagnostic. Caused black screen, no back up camera, no beeping when in reverse and coming close to another object, no sound when blinkers or hazard lights are on, no radio, no power to front charger, no ability to use front auxiliary cable. Initially a loud buzzing noise which could not be controlled by the volume dial. Problems began on or around October 7, 2022. Purchase was made September 2020. Vehicle is available for inspection upon request. Problem can be reproduced/is constant. Problem was reproduced by dealer. Vehicle was inspected by dealer. There were no other warning lamps.

NHTSA #11494703

3 times in the last year while we were driving the acceleration wen very high like from 50 to all of a sudden went up to about 80. I had to stand on the brake and try to pull over. Still accelerating I put it in park and shut it off. When you restart it it drive fine again. This has happened three times and the dealership says they can't find a problem. We are stuck driving a death trap. Please help. They wanna charge diagnosis everything I take it in. Then they say they can't find nothing. Now I am finding others that have had same issue and dealership says there is no problem. This has got to be destroying the engine reving at such high speeds.

NHTSA #11480422

Shift to park. Vehicle will not shut off. Also trying to start vehicle having to repeatedly push brakes down hard and push to start before finally starting. I bought this vehicle with 0 miles this has been an on going on and off problem since around 20000 miles have been put on.

NHTSA #11720155

225/60R17 99H Bought trailblazer brand new from dealer March 2021. I've owned many cars, street cars, etc. I've never had a tire with 10K miles develop a bulge in the side. I took back to dealer as warranty book showed covered to 12K, but they said 'upon inspecting, it appears from a pothole'. That was strange to me, as we never hit anything or the rim does not have a mark or bent or anything.

NHTSA #11441616

The contact owns a 2021 Chevrolet Trailblazer. The contact received notification of NHTSA Campaign Number: 21V440000 (Equipment). The contact called a local dealer and was informed that the only resolution for the recall would be to remove the jack stand inside the vehicle. The contact was informed that the jack stand would not be replaced. The manufacturer was not made aware of the issue. The vehicle was not yet serviced under the recall. The contact had not experienced a failure. Parts distribution disconnect.

NHTSA #11441358

Purchased my 2021 Chevy Trailblazer in August 2021 with less than 100 miles. After about 500 miles the Lane assist, forward collision assistant and the automatic breaking features all stopped working. Factory reset has been set several times with no fix. The buttons on the steering wheel do not do anything when pressed. I have been told by the dealership they will need to keep my car for at least 3 days to disassemble and trouble shoot the issue, however they do not have a rental to provide me in the mean time. I am now at around 10K miles because this is my daily driving and only vehicle. I am not comfortable that some of the safety features have stopped working and fear that any day something else could stop working that is more important to the functioning of the car.

NHTSA #11451123