2004 GMC Yukon Blower Speed

2004 GMC YUKON
35,000 MILES • V8 • 2WD • AUTOMATIC
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WCSRT
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  • 1 POST
The HVAC blower runs at slow speed only, regardless if the the system is in the auto mode or if I use the manual fan control.
Dec 14, 2009 at 3:37 PM
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BLUELIGHTNIN6
  • CERTIFIED EXPERT
  • 16,542 POSTS
check blower motor relay. so this is an automatic HVAC system?
Dec 17, 2009 at 7:57 PM