#14  
Old 12-25-2009, 04:02 PM
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Tawn
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FWIW

I had a 1998 3/4 ton Chevrolet 4WD that I bought new in 97. I cut a sidewall and replaced the rear two tires. After that it was difficult engaging/disengaging 4 High or 4 Low. Took it to a reputable shop and the explained it was the mismatched tires - they replaced the front two and the problem went away.