Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
Hello and welcome to just answer. I value your input to my questions so I may help you better. I read your notes of whats happening and the first thing I would like you to check is the wiring that goes from the body of the vehicle to the tailgate. I believe it will be a broken wire in that cord. You may have to remove the coating and boots that hide the wires to check them closely.