Heater fan

Tiny
CATHY SMYTHE
  • 2004 CHEVROLET AVALANCHE
  • V8
  • AWD
  • AUTOMATIC
  • 48,000 MILES

Heater fan running after engine turned off and runs down battery. What causing fan to stay on?

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Sunday, January 2nd, 2011 AT 8:59 PM

4 Replies

Tiny
JDL
  • EXPERT
  • 16,281 POSTS

Where applicable, change the blower relay/resistor assembly for manual hvac system.

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Sunday, January 2nd, 2011 AT 9:17 PM
Tiny
WRENCHTECH
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  • 20,566 POSTS

I assume you have Automatic Temp Control system. The problem is likely a bad Blower Speed Control Module. If it's not ATC, then the resister that takes it's place is bad.

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Sunday, January 2nd, 2011 AT 9:19 PM
Tiny
CATHY SMYTHE
  • MEMBER

Thank you for your assistance. Cathy

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Sunday, January 2nd, 2011 AT 9:26 PM
Tiny
WRENCHTECH
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Closing out question

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Friday, March 11th, 2011 AT 4:32 PM

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