Chevrolet Trailblazer sudden acceleration problems

Filed Jan 24, 2022 · Acceleration, Brakes · 2,876 miles · IL

The contact owns a 2022 Chevrolet Trailblazer. The contact stated that while driving 40 MPH, the vehicle experienced unintended acceleration. During the failure, the vehicle accelerated to speeds in excess of 100 MPH. Additionally, during the failure the brake pedal was depressed however, the vehicle did not slow down or stop. The vehicle was shifted to park to be stopped. The vehicle was towed to the local dealer. No further information was available. The cause of the failure was not yet determined. The manufacturer was also notified of the failure. The failure mileage was 2,876.

Filed Jan 26, 2016 · Engine · 181,000 miles · MN

I was attempting to brake at 60mph. As the vehicle slowed it suddenly accelerated despite my applying the brakes as hard as I could. Finally, I was able to stop by shifting into neutral while still braking hard. I stopped just inches from the stopped vehicle in front of me. This was a harrowing few moments and if I had been unable to stop or slowdown the result could have been tragic. My guess is that this is an issue with some sort of electronic accelerator assist or some computer problem which has to do with engine speed or braking.

Filed Dec 16, 2015 · Acceleration · 109,870 miles · KY

Tl* the contact owns a 2002 chevrolet trailblazer. The contact stated while driving at 45 MPH, the vehicle decreased in speed independently and suddenly accelerates. The contact also stated that the vehicle stalled without warning. The vehicle was taken to the independent mechanic where it was diagnosed that the oxygen sensors needed to be replaced. The vehicle was repaired. The manufacturer was not notified of the failure. The failure mileage was 109,870. Updated 03/18/16*lj updated 05/11/18*jb

Filed Feb 2, 2014 · Electrical, Fuel system · 110,000 miles · IA

Vehicle's headlamps will power surge, dim while driving periodically. Fuel sensor showed constant empty until repaired by the recall. Vehicle will occasionally surge forward revving on it's own at random times. The blower resistor pack has burnt up twice, the blower motor has been replaced as well as the melted wires.now the vehicle will not start. The power windows, locks, radio, dome lights, dash lights are inoperative and the vehicle will not attempt to turn over. Seems like this vehicle has had a lot of electrical issues.

Filed Jan 16, 2013 · Engine · 97,000 miles · FL

Tl* the contact owns a 2004 chevrolet trailblazer. The contact stated that while driving 20 MPH, the vehicle suddenly accelerated as the check engine warning lamp illuminated. The contact mentioned that in order to stop the vehicle he had to shift into neutral. The vehicle was taken to an independent mechanic where the technician diagnosed that the o2 sensor needed to be replaced and the vehicle control module computer needed to be reprogram. The manufacturer was made aware of the failure but did not offer any assistance. The vehicle was repaired. The failure mileage was 97,000 and the current mileage was 97,500.

Filed Jan 25, 2012 · Acceleration, Fuel system · 103,000 miles · AL

My 2005 trailblazer has begun to have several problems and in speaking to other chevy owners the same problems have been found in other models and years of chevy trucks and suvs. I'm very disappointed to see that chevy chooses not to recall, which is why I'll never purchase another chevrolet. Beginning a few months ago my gauges began to be erratic. Starting with my speedometer sticking at zero and then later sticking at 60mph even while sitting still. Sometimes it works and sometimes it doesn't. Next while sitting at traffice lights or stops signs my engine began to surge forward without applying the gas. When the vehicle surges the RPM gauge also jumps up. I already replaced one transmission at 50k miles and now since passing 100k miles have begun to have rough shifting again in my vehicle. I do not drive my vehicle in a rough manner, speed, or haul a trailer, so there is no reason to be going through transmissions. Now my fuel gauge has stopped working and I'm having to track my mileage with my odometer. I've never seen a vehicle with so many problems and no help offered from the maker. * tr

Filed Mar 3, 2011 · Acceleration, Electrical · 62,173 miles · CA

Traffic was horrible bumper to bumper, I was driving and realized not to rush so I stood in the first lane, as I was driving bumper to bumper I always drive within one car lengths in case I get rear ended. As I am driving bumper to bumper all for a sudden next thing you know my car just suddenly accelerated at incredible speed I manage to swerve into the emergency lane to avoid causing a multiple car pileup my car died instantly I started it up again and it just wanted to take off as it did before I turned the car off thinking to myself my god what just happened and what is going on, I am trying to calm my 12 year old child because it was the most frightening thing I am my family ever went thru. I press the break and just relax for a second and started the car up and it was fine. However, my nerves were pretty much shaken, I had taken the car to jj auto shop in hayward who is ase certified he did a diagnostic on the vehicle he said he could not verify what I was saying, no error lights and the history was clean. He also mentioned the computer at times does not pick up a split of a second acceleration. He believes my story and said everything is done thru computer so there is no finding as of the moment. I was not sold on that but he also recommend I could change the body throttle @ 700.00 but he said I just dont want you to buy the part so you could just drive in the slow lane and if it happens again to shift the car into neutral and turn it off asap> my thing is since cars are computerize this should have why is it they could not verify my situation and also body throttle what he was looking at and what chevy thinks it was! So my complaint is for chevy did they overwrite software to overlook sudden acceleration? The only major issue I had had with my vehicle was when the speedometer went crazy as I was driving 110 but was really going 35mph

Filed Dec 27, 2010 · Acceleration · 78,802 miles · MA · crash

Tl*the contact owns a 2002 chevrolet trailblazer ltz (na). While parking with his foot on the brake pedal, the contact stated the vehicle suddenly accelerated and crashed into the rear of a parked vehicle. There were no injuries and no police report filed. The vehicle had not been repaired. The current and failure mileages were approximately 78,802. Updated 02/17/11*lj the consumer stated the vehicle was completely stopped. The consumer stated he never removed his foot from the brake the consumer stated module 4.563 failed.. Updated 09/12/11

Filed Nov 10, 2010 · Transmission · 34,000 miles · FL

Tl*the contact owns a 2006 chevrolet trailblazer. After stopping the vehicle she shifted into park and removed her foot off of the brake pedal; the vehicle surged forward until she reapplied pressure to the brake pedal. Once the vehicle stopped she noticed that the instrument panel displayed that the vehicle was still shifted in drive even though the gear shift lever was in park. In order to turn off the vehicle she had to apply the parking brake. She attempted to restart the vehicle but it would not start. The failure was not diagnosed. The vehicle was not repaired. The failure and current mileages were 34,000.

Filed Mar 5, 2010 · Acceleration, Fuel system · DC

2005 trail blazer pedal seemed to stick*cw the consumer stated the vehicle accelerated on its own. The fuel gauge sensor worked intermittently and there were times when the consumer didn't know how much gas was in the vehicle. The consumer was informed the fuel gauge sensor failed.