Which parts fail
Components named in complaints (engine, cooling system, oil leaks, timing chain, exhaust).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2023 Chevrolet Trailblazer owners, lightly cleaned up (personal details are redacted by NHTSA).
While driving 65-70 MPH cruise control will continuously "bog" down and act like it is wanting to cut off the whole vehicle. transmission is starting to act like it is slipping to the point where I am going all the way to the steering wheel before it catches again. Vehicle is under 36,000 miles and should not be having transmission issues. Radio has been replaced once before but is now doing the same thing where it is not recognizing my phone, directions given to it by touch on screen, and will even completely turn off while in the middle of driving. Will freeze and then act like the screen has 'water' damage. back up camera is not calibrated correctly. It states that I have more than enough room to make a turn but when looking into my mirrors, it is off by almost a foot and a half. …
The contact owns a 2023 Chevrolet Trailblazer. The contact stated that on several occasions while driving at various speeds, the vehicle went into LIMP Mode with the check engine warning light illuminated. The contact stated that on three occasions, the vehicle was stopped and restarted, but the failure persisted. The vehicle was taken to an independent mechanic, where it was determined that the wastegate actuator needed to be replaced, and DTC: P0299 was retrieved. The vehicle was repaired, but the failure persisted. The vehicle was taken to a dealer, where DTC: P0299 was retrieved, and the contact was informed that the turbo or the wastegate actuator needed to be replaced. The vehicle was not repaired. The vehicle was then taken to another independent mechanic, where it was determined that the turbo and waste gate actuator needed to be replaced. The vehicle was not repaired. …
The contact owns a 2023 Chevrolet Trailblazer. The contact stated that, while driving on several occasions with the auto start-stop feature activated, the vehicle appeared to shut down at a complete stop as the infotainment screen and dashboard lights turned off. The vehicle restarted automatically but shuddered during startup. The dashboard lights and the infotainment screen became operable. The vehicle was not diagnosed or repaired. Additionally, the contact stated that while driving at approximately 30 MPH, the thermostat needle went to Hot, and the Check Engine warning light illuminated. The vehicle was steered to the side of the road and turned off for approximately 15 minutes. Upon restarting the vehicle, the check engine warning light remained illuminated. …
The contact owns a 2023 Chevrolet Trailblazer. The contact stated that while driving 65 MPH, the "Engine Power Reduced" message was displayed, and the vehicle was unable to accelerate above 30 MPH. No warning lights were illuminated. The vehicle returned to normal functionality, but the failure became a regular occurrence. The vehicle was taken to the dealer, who diagnosed a failure with the turbo charger. The vehicle was repaired, but the failure reoccurred. The vehicle was taken back to the dealer, who diagnosed a failure with the turbo charger. The vehicle was repaired, but the failure reoccurred. The vehicle was taken to the dealer a third time, and again was diagnosed with turbo charger failure. The vehicle was not repaired. The manufacturer was notified of the failure but provided no assistance. The failure mileage was 23,000.
This incident is in regards to a fire that occurred in the engine bay area, post having turbo replacement and spark plug replacement done by a local dealership where this car was purchased new. Car had roughly approximately 60,000 miles and had a check engine light and engine reduce power notification on dash. Was taken to the aforementioned dealership for general scope of work while in the possession and actively being test driven for the repair the vehicle was driven 5 miles and the driver was flagged down by motorists for smoke. The incident was recorded by Riverside Police Department and Riverside fire department. The origin and caused are still undetermined at this time. Some background in history of this vehicle has never been in a crash and has not had any parts replaced from the original purchase.
The contact owns a 2023 Chevrolet Trailblazer. The contact stated that while driving at undisclosed speeds, the vehicle independently activated the brakes while the accelerator pedal was depressed. In addition, the contact stated that while attempting to make a left turn, the steering wheel independently veered towards the right. The check engine warning light was illuminated. The vehicle was towed to a local dealer where it was diagnosed, and the brake master cylinder assembly was replaced. The vehicle was repaired; however, the failure reoccurred. The vehicle was taken back to the same local dealer and was left for further investigation. The manufacturer was not made aware of the failure. The failure mileage was approximately 25,000.
The contact owns a 2023 Chevrolet TrailBlazer. The contact stated while driving 70 MPH on the interstate , the vehicle independently went into engine power reduce mode. The contact mention she pulled off the interstate, turned the vehicle off for five to ten minutes then turned the vehicle back on and the vehicle began to work as intended. A dealer was contacted. The vehicle was taken to a dealer where it was diagnsonesd the turbo booster needed to be replaced. The vehicle was not repaired. The manufacturer was notified on the failure, and they informed her there were no recalls at this time. The approximate failure mileage was 103,000.
The contact owns a 2023 Chevrolet Trailblazer. The contact stated while the vehicle was parked, there was an abnormal sound coming from the engine compartment. No warning light was illuminated. The vehicle was taken to an independent mechanic where it was diagnosed that there was debris from the engine in the oil pan, and that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 66,000.
The contact owns a 2023 Chevrolet Trailblazer. The contact stated that upon starting the vehicle, the check engine warning light illuminated. The vehicle was taken to a local Auto Zone where a diagnostic scanner was used to retrieve DTC: P146D. The vehicle was then taken to an independent mechanic where the vehicle was diagnosed, and the same code was retrieved and confirmed. The contact was informed that the emissions control valve was faulty and needed to be replaced. The vehicle was not repaired. The contact referenced Emission Recall: A222379711; as a possible cause for the failure. The manufacturer was notified of the failure. The failure mileage was unknown.
purchased brand new December 2022. 7000 miles had issues with brake noise. dealership resurfaced rotors. 28000 miles turbo had to be replaced due to "reduced engine power". Was told a seal was the problem in the original design. 45000 miles a/c would stop blowing and produce extensive condensation on middle vents and "shift to park" became a problem. dealership cannot "reproduce" issues and therefore states nothing is wrong, although research shows problems exists and there is a back order on switch/shift assembly. Hopefully these problems "show" themselves to the technicians before extended warranty runs out, better yet a recall be issued.
Engine complaints in other Trailblazer years
Frequently asked questions
How common are engine problems on the 2023 Chevrolet Trailblazer?
NHTSA has 20 complaints about the engine & cooling of the 2023 Chevrolet Trailblazer, 27% of the model year's 73 complaints. The component named most often is exhaust system › emission control (1 mentions).
Is there a recall for 2023 Chevrolet Trailblazer engine problems?
No. NHTSA lists no engine & cooling recall for the 2023 Chevrolet Trailblazer. If the problem is widespread, a repair may still be covered by an extended warranty or a manufacturer service bulletin — ask a dealer.
At what mileage do 2023 Chevrolet Trailblazer engine problems start?
Half of the complaints with a recorded mileage happened before about 66,000 miles, and 17% before 25,000 miles.
Is it dangerous?
Owners linked 1 crash, 1 fire and 0 injuries to engine & cooling problems on this model year. If you notice symptoms, have the car checked before driving further.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.