2002 GMC Sierra 4 wheel drive noise

2002 GMC SIERRA
85,000 MILES • V8 • 4WD • AUTOMATIC
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BOB S.
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  • 1 POST
When I engage the auto button or 4 hi button a noise starts that seems like grinding and as you start to turn the steering wheel it hops slightly.In 2 wheel it's good. Please help . thanks in advance , Bob
Nov 30, 2009 at 3:49 AM
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CRZYDRVR
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  • 432 POSTS
When the 4wd is engauged this is normal. The front diff is locked in. It will do this on dry pavement.
Dec 11, 2009 at 2:30 PM
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