Mine is the same way. I know it the 4wd because I can stop engage the 4wd roll forward then hit the 2wd button back up and it’s fine for and until I get into tight parking areas
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On My 97 k1500 if I turn into a tight parking spot the 4x4 will engage by itself. The light in the switch will stay in 2wd. Also on bumpy roads it will do it once in a while. Where should I start looking.
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