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2003 Chevrolet Silverado 3500 Question: 4 wheel drive won't engage

 

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TJ1958, 6.6L V8 Diesel Turbo, Ames, IA, January 11, 2010, 20:56
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I screwed up and drove on the interstate at 70 MPH on dry pavement for several miles while in 4 wheel drive without realizing it. I knew my truck was making a strange noise but didn't click that it was in 4x4. After about 10 miles the noise stopped. now when I select 4HI the selector lights up as if it's engaged but it doesn't lock in or even try. Is there by chance a safety feature built into the transfer case, like a fuse or an easy reset or have I ruined my 4x4 capabilities? I hate to think that I have to take the truck in to get the transfer case repaired. Please help!!!

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