Mechanics

FOUR WHEEL DRIVE DOES NOT ENGAUGE

1991 GMC S15 • 6 cylinder 4WD Automatic •

I have a 1991 gmc s-15 jimmy and the four wheel drive does not work. Where do I start looking to fix it and is there something common that goes bad with these trucks?
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Denny short
January 7, 2011.



Check for power to the 4wd actuator on the transfer case. If there is power, remove the actuator and check for operation.