Cruise Control Problems of GMC Sierra 1500

The vehicle has made "panic stops" at highway speeds 5 times when using adaptive cruise control with no input from driver or surrounding environment I. E. . Clear road, no traffic, sun or no sun.

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Tl the contact owns a 2017 GMC Sierra 1500. While driving 75 mph with the cruise control activated, the vehicle decelerated without warning. The vehicle was pulled over to the side of the road, waited approximately twenty minutes, and restarted the vehicle. The vehicle was taken to findlay Chevrolet Buick GMC (928-754-3400, located at 2565 laughlin view dr, bullhead city, az 86429) to be diagnosed, but the failure could not be duplicated. The manufacturer was made aware of the failure and stated that it would be investigated. The contact was not called back. The failure mileage was approximately 26,000.

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Entering a highway from a stop, proceeded to accelerate normally and gradually. After approx. Shift between 1st and 2nd gear, the gas pedal was �sucked� down to the floor and remained stuck in that position. The truck lurched forward and behaved like it was in �passing� gear. I tried to tap the pedal to release it, but had no effect. I turned the cruise control on then off (did not set a speed) and had no effect. I depressed the brakes fairly hard which slowed the truck down, but that did not release the gas pedal; as soon as I left off the brakes, the truck again accelerated at full speed. Alternating between the brakes and tapping the gas pedal eventually unstuck the gas pedal. . Note that my 'speed' was 0-50mph when I was able to unstuck the gas pedal. I stated the incident occurred at (approx) 15mph, the speed when shifting between first and second.

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Intermittently, when applying the brakes to stop for a red light, the engine wants to keep the vehicle going at the same speed and fights the brake so the vehicle cannot stop. Shifting the gear shift into neutral allows the brakes to work but the engine rpm revs up to 2500 rpm for about 15 seconds before dropping to idle. If the driver didn't apply the brakes hard enough or shift into neutral, the vehicle would overpower the brakes and drive into anything ahead. Analogy: it acts as if the cruise control was on (and it's not) and tried to keep the same forward speed no matter the brake application. Dealer cannot reproduce the problem, no alert warning light. Some times, going at highway speed, taking foot off accelerator and expecting vehicle to start slowing down, it stays at same speed for about 15 seconds before dropping rpms. This has been happening, intermittently, for a few months.

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Mark porter gm superstore in pomeroy, OH sold me a new truck with unresolved recalls in December 2014, one being gm recall 14192. The engine in my truck failed on January 1, 2015, and the recalls were disclosed to me when the truck was towed in for repair, approximately 2 weeks after purchase. The aforementioned safety recall is in reference to a potential transfer case selector malfunction. After repair of the recall, I had a malfunction of the transfer case selector, except it became stuck in 4 wheel drive, instead of shifting to neutral. I had also been experiencing issues with the cruise control, which I asked them to address while it was in there for the 4 wheel drive selector problem. The service dept reset the 4wd selector again, and told me that my cruise control issue was related to the 4wd issue. I still have issues with the cruise control, and have requested a buy back. It has been approximately 5 weeks since I informed them that I feel my vehicle is unsafe, and nobody has made any effort to help at all. I would like to return my vehicle for a full refund, as well as I would like to see the dealership fined for selling me a vehicle with an unresolved safety recall. I feel this is unacceptable on their behalf.

I'm having electrical/computer problems that started over a year ago and continue to increase. First, my speakers go off and on as they please. The driver side door speaker is the only one that stays on consistently, and it has nothing to do with hitting bumps or anything else. Second, my power looks have gone out. My key fob will still work them and they still lock and unlock when truck is moved between park and drive. But the buttons on the door do not work. I've replaced all the fuses, and still, nothing. Third, my cruise control is going out. On a long drive I used it for half and then the other half it wouldn't even try to come back on. A few days later it worked again.

2011 GMC Sierra 1500 sle crew cab z71 4x4 coming off of the expressway and coming to a stop at a traffic light I applied brake pressure. The brake pedal was unusally stiff then all of a sudden the engine revved to over 5000 rpm's and starting to move forward. I had my foot pushed firmly on the brake and the vehicle remained revving and moving forward. I quickly put it in park and turned off vehicle. Started back up and no issues on remaining drive. Cruise control was not engaged. Vehicle has less than 1400 miles on it.

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Second report - sudden acceleration. 2011 GMC sierra pu truck. On December 20, 2010 I was traveling to visit friends. While on highway I set the cruise control for 70 mph. I exited the freeway and traveled approximately 5 miles on city streets. Upon entering a bedroom township known for speed traps I attempted to engage the cruise control for 30 mph. When pressing the cruise control to set the speed I was traveling (30 mph) the truck down shifted and accelerated rapidly (to 4000 rpm). I immediately tapped the brake and the cruise control disengaged. This is the second time for this truck to down shift and accelerate rapidly. A previous report was made in November 2010.

The contact owns a 2000 GMC Sierra 1500. On January 20, 2008, while driving 65 mph with the cruise control activated, the contact attempted to decelerate, but the vehicle failed to respond. The vehicle accelerated to 80 mph and the contact called the highway patrol for assistance. They informed him to apply the brakes, but that did not work. They then informed him to pull off on the next exit. The contact exited the highway, pulled into a parking lot, and circled around until the vehicle decelerated to 35 mph. He was then able to shut off the vehicle. He waited several minutes before restarting the vehicle and drove around the parking lot until he felt confident that the failure would not recur. He has not yet notified a dealer or mechanic about the failure. The failure mileage was 57,000 and current mileage is 60,131. Updated 04/29/08.

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Cruise control does not work properly,when descending down a hill,the truck picks up speed,there is no hold back,it just like it free wheels.

See all problems of the 2004 GMC Sierra 1500 🔎.

Cruise control does not hold back in down hill decent,it just free wheels, set at 45 mph,it will go to 60 or faster until you put on the brakes.