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Re: 98 Z71 4WD Problems - button lights
That TSB is for a 246 transfer case.
Check your tag on transfer case but I think you have a 243 case.
If so you can ground pin 13 on your diagnostic connector and get codes.
Watch shift lights and count flashes.
Post back any codes you get.
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Remember proper testing gives us the answer to many problems.
MT
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