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2002 GMC Yukon Questions & Answers
I have a 02 Yukon and when I try to use the 4x4 they flashing
Need to check for OBD Codes first
Most likely going to need professional scan tool,
to get them
You can go to You Tube Video to see some of the issues
If the encode (shift motor) failed on the transfer case, the
new one may have to be programmed
Has to be diagnosed, like all vehicles, to find a problem
Without the factory manuals, nothing you can do
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