Two problems related to cruise control have been reported for the 2009 GMC Sierra 1500. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2009 GMC Sierra 1500 based on all problems reported for the 2009 Sierra 1500.
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.
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.