2008 Chevrolet Tahoe acceleration problems

Filed Nov 30, 2025 · Acceleration, Airbags · CA

We were sitting in a parking lot with the engine running and heard an explosion in the vehicle. Later we discovered that the left rear, side curtain air bag had deployed. Horn has been inoperable for months cruise control hasn't worked in years steering wheel radio controls don't work. No appointment reason for any of it. Pass air bag off warning light red Air bag light is usually on but not always.

Filed Aug 19, 2023 · Acceleration, Airbags · CA · crash

I was involved in an accident last year where I took out a gaurd rail next to a building. My air bags never deployed and now my car will not run.

Filed Sep 20, 2019 · Acceleration, Electrical · 156,000 miles · TX

This year model has a serious defective problem with the gas accelerator malfunctioning. I have spoken to dozen of friends and family with this year model and above an all have problems with the gas pedal. This will lead to someone being killed if not addressed by the builder of the truck. The pedal sticks when driving ,thus causing you to accelerate when driving. I have almost ran into the vehicle in front of me. I have asked family and friends with the same type of truck and they too have has this problem.

Filed Aug 11, 2019 · Acceleration, Engine · 89,600 miles · CA

Gas engine run away check engine light illuminated with p0069, p0430 (emissions codes) engine uncontrollably revved to maximum 6000 RPM (max throttle)while in drive gear from autostop resume.. Cruse control not enabled slight uphill grade required engine to be shut off with key same day as first event while in drive gear from autostop resume with cruse control enabled at 25 MPH engine uncontrollably revved to maximum 6000 RPM was able regain control of engine RPM by shutting off cruse control .. (something in common with the first time ) slight uphill grade uncontrolled high engine RPM from autostop resume still happening after replacement of the map sensor ... I see as much as 2,000 to 2500 RPM from autostop resume... This is not normal it should be starting at 1200 to 1500 RPM.. Normal engine starts are at 1100 RPM

Filed Jul 18, 2019 · Acceleration, Engine · 145,000 miles · CA

Vehicle's autostop feature is extremely dangerous when driver is trying to apply the brakes and slow vehicle. Vehicle jolts violently forward upon breaking and accelerates to 10 MPH. Vehicle's transmission failed at 135k miles during stop at traffic light in hayward ca in dec 2018. Transmission was rebuilt. Vehicle at 145k miles now is completely shutting down during auto stop with low RPM's without any service codes to check. At all times vehicle is in drive.

Filed Feb 1, 2019 · Acceleration, Driver assistance · 160,000 miles · FL

When in heavy traffic coming to auto stop then auto start vehicle accelerates on it's own even with brake pedal is applied to control vehicle from take off and go then start stalling shaking like transmission is gonna fall a part then shuts off. Once turn it of and restart vehicle goes back to normal. Untill its stop and go traffic again problem reoccurring. Danger to bump into vehicles infront of you cause accident. Also vehicle speeds up on it's own without applying gas pedal at 40 to 50 MPH

Filed Jan 2, 2017 · Acceleration, Airbags · 138,000 miles · GA

Takata recall on my vehicle - why is taking so long to remedy this recall? I also have a few other issues I want to mention. I bought my tahoe in july 2016, my dash is cracking on the driver's side and from what I've read, this is very common and gm is ignoring the issue. My vehicle also started taking off on its own, took extra pressure to stop & RPM would fluctuate sporadically. After contacting a dealer, I was told there was campaign to replace the throttle body sensor but it had expired while the previous owner had possession and was told I'd have to pay for the repair and would possibly have to replace the throttle body. After replacing the sensor, my vehicle's RPM still fluctuates upon stopping and idle is rough. Very upset chevrolet customer now.

Filed Sep 11, 2015 · Acceleration, Brakes · 145,000 miles · WI

Tl* the contact owns a 2008 chevrolet tahoe. While driving approximately 75 MPH, the brake pedal was depressed but the vehicle failed to decelerate. The vehicle was taken to a dealer where it was diagnosed that throttle position sensor failed and needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 145,000.

Filed Sep 10, 2015 · Acceleration, Driver assistance · TX · crash · 2 injuries

While traveling out of town stabilitrac disabled engine power reduced on the highway. I had to pull over to the shoulder since speed was reduced. I had to turn off vehicle for a few minutes to let the ECM reset the fault. I distracted driver rearended the vehicle when I was stranded with my family inside the vehicle.

Filed Jul 1, 2014 · Acceleration, Fuel system · 98,000 miles · TX

Around feburary of this year my vehicle begin to idle out of control and was attempting to gun off evertime I tried to put it in drive, according to gm they were already aware of the issues and said they had an extended warranty on the throttle body for my 2008 chevy tahoe. My car did exactly what gm said it would do to confirm it was the throttle body but the gm service department denied the issue claiming it was a loose vacum hose and would not replace the throttle body. My vehicle still does not operate as it should which I know is due to the throttle body issue. Thousands of owners have confirmed the same issue and obviously gm knows about the issues but chooses to go around it by calling it an extended warranty which makes the replacement conditional. I am 100% sure that I and milllions of tahoe owners know this she be a recall and not a so called extended warranty to get around the expense of making a recall. When the issue occured I went flying down the freeway with minimal ability to slow the vehicle down, I had to drive my vehicle to the shop by riding my breaks because the vehicles throttle body would not let the trucks RPM go below x3000. Gm is continuing to ignore this serious issue and will untill someone dies instead of taking responsiblilty and making the recall to prevent the loss of life.