heater/4x4 electrical proublems

1998 CHEVROLET CHEYENNE
89,000 MILES • V8 • 4WD • AUTOMATIC
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MARCTETREAULT
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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?
Jan 12, 2011 at 1:47 PM
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WRENCHTECH
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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.
Jan 12, 2011 at 2:13 PM
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MARCTETREAULT
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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
Jan 12, 2011 at 3:47 PM
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WRENCHTECH
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I doubt it. I don't see a relation.
Jan 12, 2011 at 4:06 PM
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MARCTETREAULT
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well what do u think is wrong with the 4x4 cuz its like they wont engage. its manual shift on the floor.
Jan 12, 2011 at 4:09 PM
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WRENCHTECH
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I don't know. I'm in Florida and don't work on 4X4s
Jan 12, 2011 at 6:34 PM