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I replaced the resistor to front heat and air.

Tiny
JOHNNYMACK
  • MEMBER
  • 2006 GMC YUKON
  • 127,000 MILES
I replaced the resistor to front heat and air, now the rear is just blowing cold air, do I need to have it re calibrated? It isn't showing a code either, could the rear have gone back to its default setting or something else possibly bad also?
Tuesday, January 15th, 2013 AT 10:25 PM

5 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,179 POSTS
Was it the blower motor resister that was replaced? If so, that only operates fan speed. Let me know.
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Tuesday, January 15th, 2013 AT 11:21 PM
Tiny
JOHNNYMACK
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  • 3 POSTS
Yes it was front blower motor resistor
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Thursday, January 17th, 2013 AT 3:27 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
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That shouldn't have affected rear temp.
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Thursday, January 17th, 2013 AT 3:46 AM
Tiny
JOHNNYMACK
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Kinda coincidental that rear heat quit working all of the sudden after replacing front resistor! So what could it possibly be?
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Thursday, January 17th, 2013 AT 3:54 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,179 POSTS
Is the fan blowing cold air? Have you checked the heater core for the rear? Is it getting hot>?
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Thursday, January 17th, 2013 AT 4:12 AM

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