Just purchased a 2011 avalanche ltz, magnacharger and kooks headers. I know zero about the history of the vehicle other than what's on the carfax. The problem I have is accelerating from a stop or low speed, if I floor it, engine revs like it goes to neutral, doors unlock and lock, gauges reset as if 8 cycled the ignition off then on. If I am at say above 20mph, the none of this happens and it gets on it. Im baffled by what it could be, anyone else experienced this?
Thanks for help!
Thanks for help!