HEATER FAN NOT WORKING

  • Tiny
  • tdipasquale1
  • 2008 Hummer H3
  • 5 CYL
  • 4WD
  • automatic
  • 45,000 miles

I have a 2008 Hummer H3 and the fan switch will not come on any speed ( 1-4 ). A friend told me it might me a resistor, but I don't know where it is located. Any other ideas or how to check what the problem might be. Thanks tom

Wednesday, December 22nd, 2010 AT 1:48 AM

2 Answers

  • Tiny
  • rasmataz
  • Member

The blower resistor is on the bottom of the blower-Check all the HVAC fuses, HVAC relay, High speed blower relay and blower switch-

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Wednesday, December 22nd, 2010 AT 2:02 AM
  • Tiny
  • factoryjack
  • Expert
  • 4,263 posts

You will find a melted terminal and possible connector body at the blower resistor. A poor connection creates resistance, and resistance creates heat. Ideally, you will either need to obtain a harness with leads, or a terminal and connector body to perform a wire repair. More than likely, you will need the resistor also.

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Wednesday, December 22nd, 2010 AT 5:52 AM

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