Chevrolet Trailblazer Complaints

418 consumer complaints on file.

#11731220April 14, 2026
UNKNOWN OR OTHER
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
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11731055April 14, 2026
UNKNOWN OR OTHER
While driving at highway speeds, my vehicle suddenly enters low power/limp mode, severely reducing acceleration and creating a dangerous situation in traffic. This occurred multiple times. The dealership diagnosed the issue as a faulty gas pedal (accelerator) sensor and stated the vehicle is unsafe to drive under these conditions. The required part has been on back order for months, and no repair has been completed. The dealership promised a loaner vehicle due to safety concerns but failed to provide one and has had no communication for over four months. I am now required to travel long distances and fear loss of power will occur again while driving on the highway, posing a serious safety risk.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11730997April 14, 2026
ENGINE, ELECTRICAL SYSTEM, FORWARD COLLISION AVOIDANCE: WARNINGS
The vehicle has experienced ongoing and unresolved issues despite multiple service visits. The primary concern is excessive engine vibration. It shakes concerningly when backed into a driveway at an incline and placed in park. This occurs while the vehicle is stationary and idling. The issue has been reproduced and acknowledged by a dealership service advisor during a test drive, who stated the vibration was excessive and concerning. However, no repair was completed, and no clear diagnosis has been provided. The vehicle has also displayed repeated error messages with no confirmed cause, ongoing Bluetooth connectivity issues even after system updates and resets, and a malfunctioning forward collision warning system. Prior repair attempts include replacement of the backup camera, center console, and exterior windshield trim. The windshield trim repair was incomplete, as only the middle section was replaced while the remaining components were not, resulting in a mismatched and unresolved condition. No service documentation was provided for the most recent visit despite being advised that updated findings would be sent. These issues have persisted across multiple service attempts and remain unresolved. The engine vibration and malfunctioning safety systems raise safety and reliability concerns, including the potential for reduced driver awareness and increased risk of a collision.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11730351April 10, 2026
SERVICE BRAKES, ELECTRICAL SYSTEM, ENGINE
My brand new two week old 2026 Chevrolet Trailblazer LS Issue: Auto Start/Stop system failure, the engine shuts off and does not restart Description:  While stopped at traffic lights with the auto start/stop feature engaged, the engine shuts off as designed. However, when I release the brake pedal, the engine does not restart as it should. Instead, the vehicle displays a message stating “press brake to start,” and the vehicle behaves as if it has been completely turned off. This leaves the vehicle temporarily disabled in traffic and unable to move immediately when the light changes. I must press the brake and manually restart the vehicle, causing a delay and creating a safety concern, especially in intersections. This issue has occurred multiple times and appears to be related to a malfunction in the auto start/stop system. The failure to automatically restart the engine creates a risk of being stranded in active traffic and increases the likelihood of a collision. No warning lights or prior indications are given before the failure occurs. Concern:  This is a safety issue for me and my family because the vehicle does not respond as expected when attempting to accelerate from a stop and leaves me stuck in traffic unexpectedly. It is now in the shop for the second time, as I was able to record this continuous malfunction of my brand new 2026 Chevrolet Trailblazer. I get anxiety everytime I drive it. I feel I’m going to be rear ending or be involved in some type of crash. The vehicle is currently not safe to drive currently at the dealership for a second time. I had it towed each time, as I feared for my life and safety. Dealership could not duplicate issue. They asked me to record it and I was able to.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11729696April 7, 2026
UNKNOWN OR OTHER
the dash/infotainment system goes blank while driving, almost like the car looses power. then turns back on after 60 seconds with all the warning lights on before returning back to normal
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11728035March 30, 2026
FUEL/PROPULSION SYSTEM, ELECTRICAL SYSTEM
My vehicle has 2 issues that are known but only recalled for another year. My car will say shift to park when in park and will not power off. My vin shows no open recalls for this issue for my vehicle but there is a service bulletin for this issue with my year vehicle. The dealer will not cover the cost of repair since my vin is not listed in the recall. Also I just had to replace the vaper cannister purge pump and vaper cannister valve and extended warrenty was offered on the purge pump and valves for 2021 trailblazer for this known issue but not 2022. Dealerships refuse to address my concerns to assist/investigate/return phone calls to help to see how to add the 2022 trailblazer to the recall
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11727889March 30, 2026
ENGINE
Coolant control valve replacement after 5 years of purchasing the vehicle. Put at risk of over heating while driving, fan stays on after vehicle is turned off. Problem confirmed by 2 dealerships. Check engine light on for a long time, fan over working, staying on after the vehicle is off. The only warnings were the engine light coming on to get inspected and fan over running. 1st came up in December 2025 and it is now almost April 2026 costing me $1600 in repairs!! There are other Chevy models that this looks like it is being covered for but my vehicle is having this issue now and is not being covered?!?? Ever since i bought this vehicle brand new in 2021 it was labeled a lemon and have had nothing but issue after issue after issue!!
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11727823March 29, 2026
SERVICE BRAKES
Brakes squeal when rotors and pads are cold. Problem disappears when they warm after driving
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11727596March 27, 2026
AIR BAGS
While driving on the highway in light traffic at approximately 70 mph and changing lanes, the side airbags in my vehicle suddenly deployed without warning. There was no collision, no contact with another vehicle, no road debris, and no apparent external cause for deployment. I did not strike anything before, during, or after the deployment. There were no vehicles within several car lengths of my vehicle at the time. Highway Patrol was dispatched to the scene. Officer TJ Carter with Guilford County responded. Upon inspection of the vehicle at the scene, we found no evidence of impact or contact with another vehicle, object, or debris. The vehicle was covered in yellow pollen at the time, and even light contact would have left visible marks or disturbance in the pollen. After examining the vehicle, no signs of contact were identified. The vehicle does have unrelated prior body damage from over a year ago on one side, but that damage predates this incident and was not caused by this event. The responding officer can confirm there was no collision or new impact associated with the airbag deployment. There was no accident associated with this airbag deployment. The airbags deployed while I was traveling at highway speed, which caused a sudden and dangerous driving event and required me to quickly maneuver to the side of the roadway. This created a serious safety risk to me and to surrounding traffic. Prior to this incident, there were no warning lights, safety alerts, or service notifications indicating an issue with the airbag system or vehicle safety systems. However, a notification did appear in the My Chevrolet app at or around the time of the incident. The vehicle has not yet been fully inspected following the incident. A safety claim has been submitted to General Motors. I also have video footage of the Highway Patrol Officer cutting down the airbags on-site but cannot add that below so I have added a screenshot.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11727149March 26, 2026
ENGINE
VEHICLE WAS TAKEN TO DEALERSHIP FEB 2026 FOR TURBO/WASTEGATE REPAIR (P0299). MARCH 22, 2026, VEHICLE STALLED AND SCREEN SAID TO SHIFT TO NEUTRAL AND PUSH TO START AGAIN. CAR WOULD CRANK BUT NOT START (SOUNDS LIKE THERE IS NO COMPRESSION). HAD VEHICHLE TOWED TWO MILES TO RESIDENCE AND CONNECTED TO OBDII SCANNER, WHICH SHOWED 6 NEW CODES (P0006, P228C, P0089, P0340, P0365, P0299).
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11726811March 24, 2026
ELECTRICAL SYSTEM, ENGINE, SERVICE BRAKES
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.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11726763March 24, 2026
UNKNOWN OR OTHER
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.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11725509March 19, 2026
POWER TRAIN
The contact owns a 2022 Chevrolet Trailblazer. The contact stated that the vehicle failed to shift into park(P) as needed. The contact attempted to turn off the vehicle, and the message "Shift to Park(P)” was displayed. The contact jiggled the gear shift lever and the vehicle shifted to park(P and then turned off. The contact stated that the failure was intermittent, but was a recurring failure. The vehicle was taken to a local dealer to be diagnosed, and it was determined that the shift lever assembly needed to be replaced. The vehicle was repaired. The contact researched online and stated that it was a known failure. The manufacturer was informed of the failure and opened a case. The failure mileage was 47,304.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11724725March 16, 2026
UNKNOWN OR OTHER, ELECTRICAL SYSTEM
Unknown. This was a certified preowned vehicle that was purchased on December 18, 2024. We have had NUMEROUS issues with the car since purchase but the most concerning has been the door actuators. The front door actuators on both sides failed in less than a year from date of purchase. I was told by the dealership where it was repaired that this was a common problem and to expect the rear ones to not be far behind. 4 months later, the rear ones are now not working. This creates a safety hazard, especially since this is the primary vehicle that my teenager drives with his younger brother. A malfunctioning door lock actuator can create dangerous situations, including the possibility that a door may fail to unlock or open, potentially trapping passengers in the vehicle during an emergency or out of the vehicle when my underage children are by themselves. Conversely, the door may appear to be locked when the mechanism has not actually engaged, leaving the vehicle vulnerable to unauthorized access. Faulty actuators may also cause erratic locking or unlocking behavior while the vehicle is in motion, which can create a safety distraction for the driver as well as a security risk. There were no warnings that this was an issue. My son thought the doors were locking (and unlocking). I am aware GM is already "tacking" this issue as I could find stats on how many people have reported, so it is enough that they are taking notice.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11724711March 16, 2026
ENGINE
The bolts holding the exhaust to the catalytic converter broke while I was driving my car. The car could have flipped, the exhaust could have busted through the vehicle, or I could have caused an accident and died. This comes on the heels of the EXACT SAME THING happening to my wife's Chevy Trailblazer with nearly the same mileage as mine. I have 97K miles and she 96K. This is a KNOWN ISSUE to them and it is NOT THE FIRST time this has occurred. There are thousands of similar instances that have occurred and one can easily find the anecdotes through an online search.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11724610March 16, 2026
UNKNOWN OR OTHER
The park switch inside the transmission control assemblies shifter control assembly fail to detect when shifting gear into park
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11724532March 16, 2026
ENGINE
The studs that connect the front exhaust to the rear exhaust and muffler rusted and the exhaust fell down and crumpled up. Basically tore the exhaust off of the car when this happened.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11724012March 13, 2026
ELECTRICAL SYSTEM, UNKNOWN OR OTHER
The Onstar module has went out on my car and while researching the issue I found out that it is a very common problem with Chevrolet/GM vehicles years 2021-2025 and although Chevrolet and GM are wwll aware that there's an issue and that the onstar modules are faulty there's been no recall. Mind you the module doesn't just affect onstar features it also is connected to bluetooth microphone and remote start and now none of them work at all.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11723367March 10, 2026
POWER TRAIN
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!
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11723133March 9, 2026
STRUCTURE:BODY
The exhaust system and muffler fell off the bottom of my vehicle. The bolts holding the exhaust together failed and broke which led to this. This is a common failure with the newer trailblazer that GM is failing to acknowledge. There have been multiple reports of this. I had my vehicle inspected by Webb Chevy in oak Lawn IL and all the mechanic could say is “they don’t make them like they used to” which means they know this problem exists. This 100% put me at risk as I could’ve crashed with my daughter in the car when the muffler disconnected causing it to scrape and lose power. This was extremely dangerous and should’ve been a recall. There was no warning lights or anything. My vehicle just ran into issues mid traffic and this was extremely scary. There’s multiple online forums of people with this same issue: [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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