GMC Troubleshooting Questions? Ask a Mechanic for Answers
Welcome. I am Cam. Let me get that info for you. While I look that up, have you checked the wiring in the boot that runs from the body to theliftgate itself? That were can break from usage.
Ok, the ground is located under the trim on the right rear of the cargo compartment. IF the wiring is good, then its possibly the module itself. They are prone to issues and corrosion.
Ok, so if it will not communicate, we need to check 3 things
Power, GroundData line. If any of those are out, then this would be the result. Did they do any of those checks? ?
I Am not sure what your asking in your last reply.
Right is Passengers side.
The wiring goes down the drivers side and back to the passengers side. Its callout #3 in the picture. Check #9 as well on the drivers side.
The latch does not act as a ground, there is a different ground. Yes the wiring to the module, orange being power can be an issue, corrosion or breaks in the wiring causing this.
Its the 8 pin black connector, small light blue wire.