Question about 1999 GMC Envoy

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4 wheel drive lites up on switch but wont engage

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  • austris plavinskis Jan 03, 2011

    Is there or was any noises, before the problem started?

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Could be the front axel solinoid, [ the most common problem ], there are other things that can go wrong with this system such as transfer case encoder motor and sensors. Sou should have the system scanned to locate the problem.

Posted on Jan 03, 2011

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