2000 GMC Yukon Denali Q&A
2000 GMC Yukon Denali Question: electrical
All of the items you say stop working at times get their power from the retained accessory power circuit. The retained power is what allows you to operate the windows and listen to the radio after you turn the ignition off until you open the drivers door. The Body control module controls power to the RAP system - it could have an internal fault. There could also be a poor electrical connection between the underhood fuse box and the BCM or between the BCM and the instrument panel fuse box. The fault could also be with the ignition switch or the wire from the switch to the BCM. When the fault is happening it should be fairly easy for a qualified technician to perform some quick tests to begin to isolate the cause of your problem. - Russ
This is typically the RAP module(retained accessory power). I had the same problem. I removed it from the center console area, opened it up, and found a bad solder joint where the . Touched it up with a solder pen, and all is well. To diagnose, http://www.justanswer.com/car/1jzdz-hello-2000-gmc-yukon-denali-intermittently.html I found the bad solder joint where one of the relays mounts to the board. Depending upon the temp, it would short on or off. - Visitor
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