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2003 GMC Yukon XL 2500 Question: back hatch door & glass don't lock



Rayski, 8.1L V8, Bettendorf, IA, September 08, 2009, 20:53

My back door and glass will not lock with the remote or with the buttons to lock all doors. There is no key slot. What is likely the cause? How can I fix it?

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  • Answer #1

    patrick mannion from Greg Solow's Engine Room, September 08, 2009, 21:45

    I am not very experienced with Chevy hopefully some with Chevy knowledge will post response but I would check the fuses first and then look for broken wires in the harness that brings powers and grounds out to the rear hatch. Wires are usually in a rubber sheathing or hose between the hatch and the door opening. There is a 20 Amp fuse in the left side instrument panel fuse box that may be identified as "Locks" that supplies power to the rear lock solenoid. There is both an open and a close relay in the circuit as well that amongst other things could be the problem.

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