2003 Hummer H2 Blower control

2003 HUMMER H2
10,700 MILES • V8 • AWD • AUTOMATIC
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RAALLEN2005
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  • 1 POST
The blower fan for my ac runs constantly even after the engine is off, ultimately killing the battery. Is there a relay or control switch of some sort that has "frozen" in an on position? How difficult is it to locate and replace the part?
Oct 24, 2009 at 7:59 AM
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FACTORYJACK
  • ✓ASE Certified Mechanic
  • 4,159 POSTS
  • ASE Certified Mechanic
Since it is an automatic system, it has a blower control processor, and that is probably shorted. I believe that once you remove the rh lower insulator it is near the blower motor, as it uses the airflow for cooling.
Oct 26, 2009 at 9:40 PM
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