The sierra surges from park to reverse and drive. i bumped a vehicle today, and the surge has become an issue this week and there is not even 9,000 miles on the truck. the afm is rough shifting between v8 and v4 mode too. none of this was an issue until recently. my speakers also vibrate like a blown speaker on high definition radio, but not on regular radio stations.
Bucking and surging when switching gears. hard bang when trying to switch. surged forward at a complete stop.
The vehicle operates unpredictably when pressing on the gas pedal causing unsafe driving conditions. when pressing the gas pedal, any one of the follo^wing conditions may occur. 1.) sometimes the rpm's decreasea. 2. )sometimes the transmission hunts several times. 3.) sometimes the vehicle speed surges. 4.) many times the engine hesitates for a long period before the rpm's increase. this unpredictable operation is more apparent when the engine is loaded like going up hills and especially when heading into strong winds. the unpredictable operation is extremely unsafe when driving on ice covered roads. this vehicle is also considered an "off-road" series vehicle. this unpredictable operation is very unsafe, even dangerous, on aggressive trails. when driving in steep trails, drivers require feedback from their vehicle especially how the vehicle or engine responds as the gas pedal us depressed.
My vehicle is hacked anytime i am driving the vehicle i am not in full control. the vehicle steers itself left or right while driving, the brakes are always on while driving sometimes braking harder but always on. the infotainment system has many glitches. this vehicle has been back to the dealership more than 15 times has been out of service over 35 days gm even flew a engineer/tech to inspect the vehicle and says they couldnt find anything. therefore this vehicle is hacked there are so many issues and glitches and the fact that the truck only acts like this when i am driving no one else. like it can be turned on and off instantly. i have tons of videos pictures and supporting documents backing this. i need help this is a serious issue and there is so much more to it than i can type here someone please get ahold of me to help or point me in the right direction. this vehicle will be returned to gm soon as they are doing a vehicle replacment per all the issues but this needs further attention because if this can happen to me it can happen to anyone . please help