1988 GMC Sierra 4X4 not working

Tiny
GLENNKILEY
  • 1988 GMC SIERRA

Electrical problem
1988 GMC Sierra V8 Four Wheel Drive Automatic 300k miles

when I shift into 4x4, the fuse for 4x4 and the heater blow. Where would you start looking for a short

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Tuesday, December 18th, 2007 AT 6:17 PM

1 Reply

Tiny
GREASY
  • MEMBER

Its a problem with the activation switch mounted in the front differental or one of the wires that go to it

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Wednesday, January 2nd, 2008 AT 3:19 PM

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