1988 Chevy Truck 4 wheel drive problems

Tiny
SCOTT MICHALSKI
  • MEMBER
  • 1988 CHEVROLET TRUCK
  • V8
  • 4WD
  • AUTOMATIC
  • 17,343 MILES
I can not figure out why my front drive unit will not engage. When I pull my 4 wheel drive shifter in place my transfercase shifts in, but my front drive does not. My front driveshaft turns as does the rear, I am at a loss?
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Saturday, December 12th, 2009 AT 11:09 AM

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Tiny
JACOBANDNICKOLAS
  • EXPERT
Check te vacuum modulator on the axle for vacuum. Chances are you have a vacuum leak.
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Saturday, December 12th, 2009 AT 1:51 PM

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