Have an 07 Yukon and went to get key fob reprogrammed to work and they said that the fob has real strong signal but when they plugged into the obd port they said it had no signal at all so I got to looking under there and found some wires hanging out with electrical tape wrapped on the ends.how weird no check engine lights or codes can anyone help me with a wiring schematic on the obd port or point me in a direction that would help me?
