2023 Chevrolet Trailblazer Powertrain (other) Problems

The contact owns a 2023 CHEVROLET Trailblazer. The contact stated that while parking the vehicle, the computer system failed to recognize that the vehicle had been shifted into the park position, causing a "Shift to Park" warning light to illuminate on the instrument cluster. Although the gear selector was physically in park, the contact was unable to fully shut down the vehicle and had to cycle the ignition on and off multiple times until the system eventually recognized the park position. The vehicle was driven to the dealer where it was diagnosed to be a transmission control assembly failure. The vehicle was repaired. The manufacturer was not notified of the failure. The failure mileage was 61,097.

NHTSA ID

11736042

Incident

Apr 6, 2026

Mileage

61,097 mi

My family and I was I involved in a hit and run accident. My minor child is still suffering from shoulder/rotator cuff injuries. Hewas in the process to start conditioning for football. The seatbelt on the day of the accident did not lock. GM sent a criminal investigator not a trained engineer for the vehicle. The seatbelts needs to be inspected. The motor/transmission is making a ticking sound.

NHTSA ID

11716389

Incident

May 20, 2025

The contact owns a 2023 Chevrolet Trailblazer. The contact stated that while driving at 68 MPH, the vehicle stalled. The message "Shift to Park" was displayed. The contact managed to pull over to the shoulder of the road, where the contact attempted to restart the vehicle; however, the vehicle failed to restart. The vehicle was towed to a local dealer, where it remained for further investigation. In addition, the contact stated that the vehicle was previously taken to the same local dealer on several occasions. The dealer had previously replaced the battery and the turbo boost. Additionally, the dealer had performed an unknown software update and other unknown repairs. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 44,962.

NHTSA ID

11707600

Incident

Jun 15, 2025

Mileage

44,962 mi

When I shift my vehicle into park and hit the button to shut it off, a "shift to park" message appears on the DIC screen. I then am required to start my vehicle again, shift into gear, and then put it back into park and attempt to shut the vehicle off again. It has taken me up to 15 minutes to be able to get it to recognize that my vehicle is in park and for the message to not pop up. If I get out of the car while the message is still on the DIC screen, I cannot lock my vehicle and it drains the battery. I contacted my local Chevrolet dealer and they are saying that although this is a known issue which has had more than one GM Service Bulletin on this issue which includes my year and model, there is not an actual recall for this, so I have to pay out of pocket, because my bumper to bumper warranty expired at 36,000 miles and I am currently just shy of 39,000 miles. Of note, there is also a class action lawsuit for this exact issue so I am confused as to why a recall would not have been issued, or why it would not still be covered despite the expired bumper to bumper warranty.

NHTSA ID

11684421

Incident

Aug 30, 2025

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

NHTSA ID

11666915

Incident

Jun 14, 2025

Repeat issues with the transmission, ongoing issue for about two months. Initially experienced the vehicle not shifting in drive or reverse, which was resolved in drive. The issue persists when in reverse, where I will put it in gear but it will rev without moving, as if the vehicle is in neutral . The dealership has replaced the valve body three times and is now awaiting other parts to attempt to resolve the issue.

NHTSA ID

11552709

Incident

Aug 28, 2023

Vehicle will not shift when needed or suddenly shift when it shouldn’t be, causing a lurching motion of the car. Then, the vehicle would not be able to be put into reverse. Appears to be a transmission issue.

NHTSA ID

11541336

Incident

Aug 28, 2023

I have noticed that when it's very cold, the vehicle will not shift to the two highest gears (I think) until 20+ minutes into my trip, and that's with having auto-started the vehicle 10 minutes prior to getting in it. So it takes about 30 minutes for the vehicle to shift into whatever the two highest (I think) gears are. This morning, 20+ minutes into my trip, I was going 71mph while pushing 4,000rpms, and it wouldn't shift. The temperature outside is 1 degree fahrenheit. The same thing was happening when it was cold in December. That day I don't think it got above 0 degrees fahrenheit.

NHTSA ID

11508665

Incident

Feb 23, 2023