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4wd wont lock in - 1993 GMC Yukon

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You may need to have your clutch linings checked. hope this helps

Posted on Feb 04, 2010

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does it have manual hubs to lock ? if so lock them in 4wd.
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sounds like it might be an encoder moter, but the best thing you can do is take it to a good transmission shop so they can hook up their reader and find out for sure

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