Equipment Problems of Chevrolet Trailblazer - part 1

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.

See all problems of the 2021 Chevrolet Trailblazer 🔎.

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

See all problems of the 2022 Chevrolet Trailblazer 🔎.

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.

See all problems of the 2023 Chevrolet Trailblazer 🔎.

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.

See all problems of the 2025 Chevrolet Trailblazer 🔎.

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.

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.

“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.

The vehicle displayed a warning on the dash that the battery was not charging properly and vehicle may stall. The vehicle was checked at dealership and issue was disregarded. 3 days later the vehicle showed the same warning and the battery light flickered, there was a chane in the power and lights dimmed. This was evaluated by dealership, apparently it is a known issue but no resolution available. When the battery light flashed during the second event there was no control over the vehicle (power/steering) creating a very concerning safety issue.

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.

Check engine light came on steady (not flashing) took to local repair shop and was informed it was a thermo control valve. My car currently has approximately 66k miles on it.

See all problems of the 2024 Chevrolet Trailblazer 🔎.

Vehicle has given me a "shift to park" message when the sift is all the way up and off at park. You basically has to push hard for the message to go away.

Park to shift error. Vehicle will not turn off while in park, instead gives an alert to "shift to park" even though the vehicle is already in park. Due to faulty park switch or wiring in the shifter assembly.

1/ while at the stop site, the car suddenly stopped and went black. Stereo turn off and screen went black. 2/ sometime I can’t unlock the car from inside. The lock works but not the unlock button. While backing or stopping there is a high noise that seems like I have a bad brake , took it to the dealership and they said the brake is good but they can’t figure out where the noise coming from. I took the car to the dealership 3 times in 1 month since the problem started and they still can not fix it.

The exhaust and muffler completely detached from the catalytic converter/exhaust manifold while driving down the road. If we were driving at a higher rate of speed, the exhaust pipe could've caught on any imperfection on the roadway and shot the rear end of the vehicle up and then potentially caused an accident/death. This has happened to many I have discovered upon further research and is a common problem with the vehicle according to the dealership. Vehicle has been towed to the dealership to be inspected and/or repaired. Zero warning signals, lamps, or messages.

Multiple times of getting the warning that I need to "shift into park" when the vehicle is in park. I did have fixed at my local dealer but did have to pay, I know this is been an ongoing issue with many Trailblazer . Chevy should look into recalling the failing part.

I have a shift to park message that is malfunctioning and I can't shut off my car.

My vehicle started flashing “shift to park” about 2 weeks ago, after being in a gm dealership for 18 days for repair. I immediately notified them my cel was back on and what it was showing on my dashboard ( shift to park). I dropped it off on a Saturday and that same day they told me they could not figure out what was wrong with it. I texted the service advisor of the notification I was having and if that was the issue to which she did not do anything about. The issue is that it will stay on, and flash and can drain my battery out and it will not allow me to lock my car or it tells me that my vehicle remote is not inside to turn it off. When I called the dealership about it, they told me that the s. A. Did not mention the issue I was having and she was not concerned with it- and they would look at it but will charge me for it ( while they already had possession of my vehicle). Dealership told me they saw no code for it and it wasn’t showing up on their end when they had my car. But the day I picked it up, and put it in park it started doing the exact issue I told them about. They told me they were getting my car to “act up” and they would of clearly seen the notification on my dash and did not look into it. Insurance has not looked into it and no one seems to be able to help me and I’ve already paid $1000. 00 to two different body shops to fix my car and it’s still having that issue. At current, it’s flashing “shift to park” and I can’t get it to stop and I have to keep turning my car on. It’s a huge safety issue as it’s going to drain my battery out or cause me to not be able to start my vehicle.

The bolts attaching my muffler to my exhaust pipe sheared off of my 30,000 mile 2022 chevy Trailblazer at highway speed, launching them into my muffler. My exhaust pipe dropped-at 70 miles an hour it could have ripped off, and I am lucky the bolts went into my muffler and not something more vital. Also, if the pipe or muffler had fallen, I-or someone behind me- could have run over it causing potential control issues. I am seeing that this is a common problem on various consumer forums. There was no warning- didn't even get a check engine light after the fact- things just got really loud. I was fortunate to be close to an exit (as I was in a construction zone) and was able to get a tow to the nearest dealership.

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.

The locking mechanism has went out in all doors. Unable to unlock / lock and once they are locked, unable to open the door unless it is opened from the inside. I replaced the drivers side door lock actuator and mechanic stated they all needed to be replaced.

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.

The dash and radio have gone out while driving several times now. Was driving out of state on vacation and it has gone out on us over 9 times. We will be driving and the dash goes black. You can’t see your speed, gas or radio.

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.

My car key keeps getting stuck in the ignition and won’t come out until we unhook the negative on the battery.

I received a email from carfax stateing the truck had diagnostic testing and is the transmission in the engine system. It’ll start up but you cannot drive it. It shows that are passed the state inspection on June 27/2025 stating that the truck passed the inspection how the truck went past inspection and it’s not driveable and I don’t have it. There’s no way that’s fraud you gonna say that the truck pass inspection when you can’t drive it normally when you go get a state inspection and once they do it and it pass they give you the keys and put the sticker on it. In this case the truck is still at the dealer and it’s not driveable. You can’t drive it. It’ll start up. They change the oil rotated to tires but it’s not driveable. You can’t drive it.

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.

Hift to park the vehicle began to display 'shift to park' on the display even after the vehicle was in the park position. By shifting back out of park and back into park, but that became less effective as time went on. The vehicle will not shutdown fully when this warning is displayed and therefore can cause a battery drain condition, which can result in a safety risk returning to a vehicle with a weak or dead battery. Vehicle has only 23,478 miles. In researching to understand the problem, I discovered that there are many instances of this same issue occurring at about the same time period, as well as there being several class action lawsuits on the identical issue, which shows that it isn't isolated.

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.

Upon starting vehicle it would idle for 30secs to 1 minute before shutting completely down, then would prompt to engage brake and push start/stop button to turn back on. Two different times while driving at 60+ mph the vehicle completely stalled losing power steering and brakes. Both times when the vehicle shut down it would say to push start/stop button and then place vehicle in park, engage brake to restart. When the vehicle stalled I was getting onto a highway and was about 2 seconds from being hit from behind by a semi while I was at almost a standstill while they were doing 70+. Have taken it back to the dealership both times and it died on them once but there is no solution to this issue as no codes come up.

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.

Traded in a good 2018 chevy cruze for a Trailblazer that just keep cutting off and wouldn’t start back contacted dealer 9,989 miles 11 months old it would cut off it said the theft determine system needs service then one day it just wouldn’t start at all it would cut off while driving I had it towed to dealer I had been telling the dealer fruitless and for 4 months fruitless I traded a good chevy they gave 9,500 and I put towards the trail blazer 9 ,989 miles I am 65 years old and half rude company every time the vehicle will cut off it will state that the theft determine system needs to be serviced. It’s a software.

The gear handle, when I place in park, will not park, therefore, I am not able to turn off my car. I have to jiggle, push start button and try over and over. This is a 2 . 5 year old vehicle. Warning alert comes on stating the obvious, unable to park! also, it sounds like when I do drive of like the dragging, rough sound, which sounds like the gear is not fully in drive. Again, this is a new vehicle. It is unsafe and getting worse. Thank you.

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.