I was driving north on 85 at 70 miles an hour and my vehicle decided to drop down to 20. i have looked up information on issues this truck has had and 1 of them is registered under nhtsa id # 100032435 / pip-4695.gm: loss of power hesitates on acceleration. 4.3, 4.8, 5.3, 5.7 and 6.0 engines coupled with the 4l60e or 4l65e may experience a condition of hesitates, misses or loss of power under acceleration. the vehicle may operate as if it is in reduced power mode. *pe i have purchased an air mass flow sensor, throttle body sensor, all 4 o2 sensors, and a coolant sensor. my truck is still not running at full capacity. i need some information on this and some help fixing my vehicle. *tr
My 2000 yukon denali old body style with passlock 1. many times it will not start due to a problem with the passlock system. i have brought it into the dealer for not to find the problem many times and being charged an hour for nothings. i drive and the light comes on all the time. *jb
When adjusting the steering wheel during night hours the headlights would flicker. the dealership was notified, but did not resolve the problem. please provide more information. *jb