Equipment Problems of Chevrolet Trailblazer - part 1

Key getting stuck in ignition.

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2021 chevy Trailblazer has a shift to park sensor issue. Car is in park and the sensor does not recognize that it is in park and displays a safety message to place car in park and continues to beep. Takes numerous attempts of taking car out of park and back into park to get it to recognize that the shifter is now in park. Has taken up to 15 minutes. Dealership has diagnosed as a known issue with this year and make with a service bulletin issued by gm of 23-na-119. Has been happening over the last 2 weeks.

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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.

Exhaust system yes bolts that hold it on , rusted off could have fallen off while I was driving. Luckily I managed to get to work before it fell off. Yes inspected by repair shop no warning.

Per manufacturers bulletin pic6660 air flow from dash bents when using a/c after extended driving. . . Indicates that the evaporator may become blocked by ice, so a/c does not work after about 1. 5 hours during driving.

The shifter doesn't recognize when it is shifted into park. Shift to park keeps flashing on dash.

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My new vehicle was stuck in park the dealership replaced a control module then a gear shift assembly and now some kind of brake switch and im nervous that the vehicles is unsafe. The dealership has not been letting me know much I've had to call and they won't give me any paperwork.

Shift to park warning/beeping when already in park. Happening multiple times and different days.

Vehicle displays shift to park when vehicle is in park & you push the ignition button & audible chime occurs. Apparently this is a known issue for Chevrolet Trailblazers & Buick encore GX vehicles model year 2021 & newer. You have to either wiggle the gear shifter several times & depress/wiggle the shift lever button in order to turn off the vehicle. Sometimes it takes 5 minutes to get it to work.

The infotainment system which controls the radio,backup camera, onstart,and other safety components stopped working I took it to a gm certified dealership and it has just been all bad from there. Gm has horrible customer service and so does the gm certified shop in michigan city I took my truck in that I only had for 11 months because the infotainment center went of paid for two diagnostic tests they still couldn't] find the issue and now they they're changing me 1,037. 76 for a radio which they dont even know if it's going to fix the problem which if it doesn't then I have to pay more money for another diagnostic test and more parts and because I got mad and said I'm paying for a guessing game the dealership told gm that because I had some aftermarket equipment in my vehicle that that caused the issue bullshit the stuff never got plugged into anything at that point the day of my appointment with the audio shop the screen went black with no sound they're all full of shit and didn't want to take responsibility for the widely known issue with the telemedic system.

I used the jack for the first time of buying the vehicle new. I jacked the vehicle up to put the spare on and the scissor jack folded up and the car dropped. So I looked up if there was a recall on it and there isn't but there is on other vehicles. Note: the car was on level hard surface ground and I placed the jack in the correct location.

Shift assembly kit, it is available. Dealership has to order part for inspection. Still passed inspection. Possible unintended rollaway accidents. Not being able to lock the vehicle as well. Yes, it’s been confirmed. There’s also so many class action lawsuits against gm about this matter. Why isn’t there a recall already?! getting the “shift to park” message in my vehicle for the 2nd time now in less than 4 years. The shift assembly kit was replaced back in December 2022. Apparently it needs to be replaced again because of a switch.

When car is shifted to park it doesn't let the car turn off. There is a message to shift the car to park when it is in park.

The two components that failed were the water pump and the coolant control valve which caused the engine to overheat, resulting in me having to pull over along the side of a busy highway putting me at risk for injury while the vehicle cooled down. It would be available for inspection upon request. This was dangerous mostly to myself due to having to pull over on the side of a busy highway and wait until the vehicle could be somewhat ok to be driven the rest of the way home. I had to drive very slowly home with my hazards on at a very low speed. Vehicle was brought to a nearby chevy dealership the following morning. They had the vehicle for two days and claimed they could not get the problem to present itself, however, within five minutes of me driving it off the lot it overheated resulting in having to pull over again on a busy highway. An independent service center had the vehicle and diagnosed it initially as an intermittently failing water pump. This repair did not resolve the issue 100% as the vehicle began to slowly overheat again within 18 minutes of highway speed driving. Car was towed back to repair shop from my place of employment. They were able to get it to present the issue and diagnosed it as the coolant control valve. This has so far appeared to resolve the overheating issue. The vehicle has not been inspected by the manufacturer, police or insurance rep/others. The only warning that came up was on the info screen above the steering column advising me the engine was overheating and was in idle. Immediately upon seeing this I pulled over to prevent any damage. Temp gauge was all the way in the red. Fan was blowing hard. This has never happened previously and there were no other warning lights of any kind on the dash to indicate an issue. This incident happened on 6/2. Please be advised, this vehicle has since been repaired and has ran me $2300 as it is out of warranty.

When putting the vehicle in park and turning off, a warning message will appear that states "shift to park" and initially a nudge of the gear shift would clear the message, after one week, a simple nudge does not clear the message. The vehicle will not turn off and continues to beep, you have to put vehicle in gear (d or r) move a few feet, return to p, press very firmly on the brake and press the ignition button, this may or may not clear the message and it could take a few attempts of these steps to clear.

After the car is parked and engine completely turned off, there is a 'shift to park' warning and it kept on blinking and wouldn't turn off. It drains the car battery.

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.

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

I keep receiving a “shift to park,” message after putting the car in park and shutting it off.

The shift to park is defective on mine and many other gm vehicles. I had it previously repaired under manufacturer warranty and then again in just over 16,000 miles driven which fell outside of the manufacturer warranty. I had to pay out of pocket for the repairs and gm refused to reimburse me for the repairs. Gm has a service bulletin recognizing the defective part and still refused reimbursement. The shift to park causes the vehicle to not recognize the vehicle is in park preventing it from shutting off. This causes the battery to drain and need replacement as well. I have now had the shift to park and battery replaced twice in under 45,000 miles. The service advisor for seminole Chevrolet advised this part should last minimum of 100,000 miles and it is a known issue. This causes a major safety concern as the vehicle doesn't shut off and could cause someone to be stranded anywhere. It is concerning that a major vehicle manufacturer is continuing to manufacture and use known defective parts. My vehicle has been inspected and repaired both times at seminole Chevrolet in sanford, FL. I have also contacted the executive resolution team at gm with no resolution. The shift to park and low battery illuminates on the dashboard before the vehicle completely shuts down due to the battery failing caused by the shift to park defect.

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.

Rear camera stoped working. I read 2022 to 2024 had recalls on internet. Ours is 2025. Been to dealer they ordered new camera under warranty. But there on back order. They said they would call us when it came in. That’s the story.

See all problems of the 2025 Chevrolet Trailblazer 🔎.

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.

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.

The park switch inside the transmission control assemblies shifter control assembly fail to detect when shifting gear into park.

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.

Rear back up camera. One day it started to glitch when put in reverse. I placed the car in park, gave it a moment and put it in reverse again. This was repeated in the attempt to get the back up camera to work. Next- turned the vehicle off for a moment, restarted it, put in reverse and this did not help. Also, I attempted to check for update/update and reset the infotainment system. This did not help. The backup camera, after this incident has not worked since. I bought this car brand new. Also, just to note, the car shakes dramatically when increasing certain speed during winter, due to very little snow on the tires.

My car along with multiple other cars like mine are having issues with the back up camera not working. I have to take it into a Chevrolet dealer to get it replaced. It is a huge safety concern and a recall needs to be issued.

The nut on the axle on the passenger side of the vehicle came completely off. Not sure how long it was off as it was “smooth” and full of dirt. From what I was told the wheel could fall off. I travel on an interstate at 80 miles an hour daily. I bought this car to transport elderly mother to appointments. I am not feeling confident in this vehicle. I would trade it if I was not upside down in it. The dealership has been great.

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

Screen in car goes black. No radio,no noise,no back up camera-apple car play won’t hook up anymore-I see others models around mine having exactly the same issues I am experiencing-I have reset radio/screen multiple times,it works anywhere from a few mins to hours then it blacks out again and there is nothing on screen. I have replaced the battery,key fine battery’s,and fuse. And I am still experiencing this issues. I have made an appointment at a chevy dealer to have it diagnosed March 2,2026. That is $169. 00 out of my pocket. Again I am seeing plenty of other checks around my make and model having the same issues being recalled. My incident started about January 30,2026.

Due to the front view camera module going bad, I have no access my adas.

Exhaust fell off under normal operating conditions. Dealership (dekalb sycamore Chevrolet- sycamore illinois) stated this has been a common issue with this year group of Chevrolet Trailblazer suvs. Dealership stated the bolts/exhaust pipe junction between the catalytic converter and pipe that goes to the muffler rusts through and the entire exhaust system from the cat back falls out of the undercarriage of the vehicle, which is what happened here.

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.

“shift to park” message came on the dashboard. Car would not change gear or go into reverse or drive. Basically stuck in park position. Car kept peeping sound nonstop for over 20 minutes. And it drained the battery. Car would not drive. Had to have it towed to the dealership I brought it from 45 miles away. I had to pay $656. 72 at dealership to get it fixed. The dealership removed and replaces the shifter assembly which cost $656. 72.