1988 GMC Sierra 4X4 not working

GLENNKILEY

MEMBER
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

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

1 Reply

GREASY

MEMBER
2 POSTS

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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1988 GMC Sierra 4X4 not working

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