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Heater/4X4 electrical proublems

Tiny
MARCTETREAULT
  • MEMBER
  • 1998 CHEVROLET CHEYENNE
  • V8
  • 4WD
  • AUTOMATIC
  • 89,000 MILES
Why does my 4x4 only work when my heater works fully. But when my heater only works on HI blowing capacity the 4x4 wont engage. Electrical proublem? Or a ground wire problem?
Wednesday, January 12th, 2011 AT 1:47 PM

5 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
That is most likely a bad blower motor resister. It's located under the dash on the top of the blower motor housing. The dash has to be rolled back to access it.
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Wednesday, January 12th, 2011 AT 2:13 PM
Tiny
MARCTETREAULT
  • MEMBER
  • 3 POSTS
Would that fix the 4x4 too? Or is that something else. Cuz if the blower works the 4x4 works wich is very rarly the blower works tho
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Wednesday, January 12th, 2011 AT 3:47 PM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
I doubt it. I don't see a relation.
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Wednesday, January 12th, 2011 AT 4:06 PM
Tiny
MARCTETREAULT
  • MEMBER
  • 3 POSTS
Well what do u think is wrong with the 4x4 cuz its like they wont engage. Its manual shift on the floor.
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Wednesday, January 12th, 2011 AT 4:09 PM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
I don't know. I'm in Florida and don't work on 4X4s
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Wednesday, January 12th, 2011 AT 6:34 PM

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