Body complaints by model year
Which parts fail
Components named in complaints (doors, hood, frame, rust, paint and trim).
Mileage when the problem started
What owners report
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: [redacted]
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.
The contact owns a 2021 Chevrolet Trailblazer. The contact stated that while outside the vehicle, the power liftgate opened and closed independently. The liftgate struck the driver on the head. The vehicle was taken to the local dealer but the vehicle was not diagnosed or repaired. The manufacturer was notified of the failure but no additional assistance was provided. The approximate failure mileage was 5. The contact stated that this issue happens a lot and at any time.
The contact owns a 2021 Chevrolet Trailblazer. The contact stated that during inclement weather, water accumulated inside all four door panels. The contact stated no warning light was illuminated. The vehicle was taken to the local dealer and the contact was informed that the failure was common in the year, make, and model vehicle. The vehicle was not repaired. The manufacturer had been informed of the failure. The failure mileage was 23,520.
Tl* the contact owns a 2008 Chevrolet Trailblazer. The contact stated that the driver side door window would not close and the door locks randomly locked and unlocked. The vehicle was taken to the dealer where it was diagnosed that the electrical door mechanism was faulty and needed to be replaced. In addition, a burning odor was present inside the vehicle coming from the driver side dual climate control. The mechanic diagnosed that the temperature actuator was inoperable. The manufacturer was notified of the failures. The contact also indicated that the liftgate would not open. The failure mileage was 35,000.
I went to close my hatchback on my 2008 Trailblazer yester and after closing the door a few seconds later the glass exploded. Some on the inside of the car and some on the outside. The truck was parked. I now have a cut on my finger that May need stitches. I hear this is a very common problem with these trucks.
A vehicle was stopped in front of me and I rear ended them. I was going around 44-55 MPH. After I hit the other car from behind I crossed 2 lanes of traffic and went thru a pretty deep ditch. The air bags did not deploy at all. I sustained a concussion., several head lacerations and a fractured lumbar spine.
Tl* the contact owns a 2007 Chevrolet Trailblazer. The contact was driving 35 MPH when the front driver side door / insulation caught on fire. My husband poured a cup of water to put out the fire. The entire interior door panel, power master window switch and harness had to be replaced. The contact was not injured. The contact also stated prior to the failure the door failed to open and the power windows failed to operate. The vehicle was not destroyed. The manufacturer was made aware of the failure. The vehicle was not repaired. The failure and current mileages were 77,000. The driver's side door switch and module assembly caused the fire. There was damage to the wiring harness, door trim panel and insulation. The inner door handle and power mirror switch needed to be replaced. Pictures received 05/07/12
Related recalls (1)
Structure › Body
Certain sport utility vehicles are missing welds on the rear floor plan.
Remedy: Dealers will inspect the vehicle for missing welds. If missing welds are found, GM will exchange the vehicle for an equivalent vehicle or provide a refund of the purchase price. Owner notification began October 4, 2002.
Frequently asked questions
Which Chevrolet Trailblazer years have body problems?
By NHTSA complaints, the 2003 (43), 2002 (40), 2005 (27), 2006 (26) and 2004 (23) model years. Body complaints make up 5% of all complaints for the 2003.
Is there a recall for Chevrolet Trailblazer body problems?
Yes — 1 recall, including 02V-273 (body, Oct 4, 2002). Recall repairs are free at authorized dealers; check a specific car with the VIN recall check.
At what mileage do Chevrolet Trailblazer body problems start?
Across all years, half of the complaints with a recorded mileage happened before about 76,000 miles; 35% happened before 50,000 miles.
What part fails most often?
Owners most often name the body (92 mentions), followed by the body › door (16).
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.