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2003 2500hd Rear Power Locks
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Question
John288
Hello
I have a 2003 Sierra SLT 2500HD, crewcab, shortbox. It has low milage and I have owned it since new. Over the last few years, the rear door locks would intermittenly stop working. The dealer was not able to figure out the exact problem other than to try switching the door lock relays in the fuse pannel beside the drivers door. I did that the the problem shifted from not unlocking to not locking so I went and bought a relay. It worked for about a month and then the problem was back. The parts department would not take the relay back because they figured there was a problem with my truck. The service department that charge me to diagnose the problem would not do anything other than to say they needed to book my truck in for an appointment. Before I buy another $35 relay (from a different parts department), is there a chance that there is a problem with something else in the wiring or ? that is causing the relay to malfunction(for example, body control module, short in some wiring)?
Thankyou
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