heater blower will not shut off

1997 GMC YUKON
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MFREE
  • MEMBER
  • 1 POST
My 1997 GMC Yukon (5.7L) heater blower will not shut off, usually stays on high. Why does this happen and how do I fix it Just started out of the blue yesterday
Jan 17, 2012 at 6:34 PM
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FIXITMR
  • ✓Experienced Mechanic
  • 9,989 POSTS
The fan speed controller is bad and not shutting down.
Jan 17, 2012 at 9:06 PM
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