four wheel drive

  1. C

    4 Wheel Drive Service

    Hey guys! Hope you can help, as I have exhausted my knowledge. 2007 Yukon SLT 5.3 4WD About a week ago, my Service 4WD Light came on. Scanned the computer and got the U0102 (Lost Communication with Transfer Case) code. 1. Selector switch wasn't lighting up, so I started with a new switch...

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