Chevrolet Trailblazer knocking problems

Filed Feb 7, 2026 · Driver assistance, Seat belts · GA

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.

Filed Oct 9, 2023 · Driver assistance, Electrical · AZ

The vehicle almost caused me to collide with another vehicle when I was trying to get into right lane it kept pushing back into left fast lane, this happened throughout the drive to and from Northern California. car got horrible gas mileage, wasn’t operating correctly at times, my radio screen scrambling, going blank, stop working, static cracking sounds coming out. Every time I started the car it would not connect to iphone by any means. ignition button wouldn’t turn off, I had to push numerous times to turn off. There was an update for the lane departure issue, the radio issue there is no current fix as per manufacturer the service advisor informed me. I have looked up online recalls and see that there are many manufacturer correspondence for problems with this vehicle.Today there’s knocking coming from engine like there’s something wrong with lifters also burning smell inside vehicle.

Filed Dec 6, 2020 · Airbags, Seat belts · 160,000 miles · AZ · crash

Yes I was driving on the 65 miles an hour in the passenger lane are carpool lane all the sudden for no reason both curtain airbags just deployed I had my head right next to knock me out cold I didn't proceed over and hit the wall 21 times just skip down in when I came to I thought I was I thought it and other vehicles likely that was not the case did cause some testa injury hurt might pull my car allegedly for my ribcage in got my neck in my head I see this is happened many times the 2008 but yet they keep saying there's no problem that even though it's a 2% lean and exposed the 16 for the role over to kick in that escape screwing everybody yeah the vehicles on the highway going straight no turns no bombs nothing just deployed I have video pictures of the wall it screwed up my rams and of course the 4 wheel drive messed up and show the back axle in the pumpkin so now thats whining so I know it's gonna fail soon power steering linkin truck never lead to drop another with silent at the great v6 in it now the front end steering all screwed up and I can see that it's happened many many times before

Filed Mar 11, 2020 · Driver assistance, Electrical · 185,010 miles · SC

Whether the car is turned on, or off with or without key in the ignition, it has a small speaker or tweeter that steadily stays making a faint buzz. The center console is very loose, and if you press or knock up against the right side or the back side, it becomes louder and/or quieter. Then while in auto (2wd-4wd^or4wdl) and driving, the transmissions feels to not switch geer at the right time, or from drive to reverse and back to drive it jolts forward or back really hard.

Filed Jul 31, 2017 · Electrical, Lights · OH

I pulled into my garage and shut my truck off but my doors wouldn't unlock. Then it started making funny ticking sounds and all my lights inside started flicking and my windows all rolled up and wouldn't go back down so I could get out. After about 20 minutes or so I turned it back on and was finally able to get my door unlocked to get out. Now when I touch anything my other windows go up and my seat starts to move on its own. My driver's window is stuck up and won't come back down. I have 5 kids and can not chance something happening and us not being able to get out safely.

Filed Feb 27, 2016 · Acceleration, Driver assistance · 131,500 miles · MN

This issue occurred about 6-7 times throughout my 15 mile trip. My travel was on a highway and speeds were between 55-68 m.p.h. At the onset of each occurrence. I would hit a bump in the road (not a major one ' just a bump) and then the 'stabilitrak active' light would be illuminated in the dash continuously blinking like it's stuck. Then: -the truck would become sluggish dropping speed and knocking off the cruise control -you can't accelerate -the steering locks up sort of causing it to feel like the truck is out of control, this occurring at highway speeds -the amount of power used by stabilitrak was immense ' the headlights began to dim the longer it was stuck in this state -if you try braking during these spells it has the anti-lock active so you're just grinding away like you're in a skid but not stopping (and this is on dry pavement!) -- this occurred one time while I was on an exit ramp and and I was unable to slow thankfully I had taken the ramp a little slower to begin with or I could have been in major trouble in the curve then suddenly as quick as it all started it releases ' the light shuts off and all returns to normal.

Filed Oct 21, 2015 · 100,000 miles · TN

Traction control light and the light beside it stay on 24/7. I have had it at my mechanic who has sent it to the dealership as well and have replaced all parts but the computer to my car. I cannot afford to replace the computer and not know if that is the fix. My head lights flicker and some days turn off which have been recalled but when I give my VIN the dealer tells me I have zero recalls. They do this when sitting still, driving slow or even on the highway. I have cars thinking I am flashing them some times when I am not. If I roll my windows up they dim. I also was pulling out of a parking lot when my car stalled on me. When I coasted down the hill to stop, the car started. My mechanic put it on computer but the code was an "unexplained" reason, basically no one know why or if my car will do it again. I have had issues with this car from the day I bought it. I have taken it to dealership over the headlights but it was daylight and they did not see it so said they couldn't help me. I am so over my car, I am to the point I will not own another gm product. I have seen 3 recalls in the news that match my year and make, but my "VIN" says otherwise. I feel like I am driving a ticking time bomb. My computer lights have been on for 3 years now, headlights have done this since I bought the car in 2008, and it stalled beginning of spring 2015. I just want a safe reliable vehicle!

Filed Jul 29, 2013 · Electrical · FL

Speedometer/instrument cluster have failed/stopped working. The gauge began ticking while being operated; showing increased, but not accurate speed. Now the gauge stays at 180 MPH and no longer functions.

Filed Dec 20, 2012 · Engine, Transmission · 100,100 miles · WA

I started my trailblazer and let it warm for a few minutes. The truck idle was louder then normal but did not knock or miss. I put the truck into drive and pulled out of my driveway. As I was driving down the street I noticed the rpms shoot up and the truck slow, I pulled over and put it into park, the truck idled loudly. I put the truck into drive again and the RPM would rise with little power to the wheels. I nursed it up to highway speed and at higher speeds around 60 the problem seems to not be there. The truck continues to do this in the lower gears and at lower speeds. I notice the oil pressure goes up when this happens and I worry of doing more damage. I have already had a wiper module replaced that was recalled but never replaced before the vehicle was sold to me.

Filed Jun 6, 2012 · Engine · 53,000 miles · MN

Tl* the contact owns a 2004 chevrolet trailblazer. While parked with the engine running, the contact heard a loud knocking noise coming from the engine. The vehicle was taken to the dealer for diagnostics. The technician advised that the knocking noise was normal for the type of engine in the vehicle. The vehicle was then taken to an independent mechanic who advised the contact that the pistons in the engine were down sized, causing the noise. The vehicle was not repaired. The approximate failure mileage was 53,000.