I have the harness from the donor car, as well as the speakers, stereo, and BCM. Do I need to wire the BCM (body control module) into the truck to make it work? If I have to install the BCM, I may as well put the factory alarm into the truck, for the keyless entry. I loved the way it sounded in...
Just a guess here without actually seeing the car, is the torque converter lock-up switch has failed. You have an automatic with an overdrive, with a lock up converter. The switch has failed, not allowing the converter to disengage when you are stopped. A properly working switch locks up at...