heat won't go off at times even when all heat is turned off

2001 GMC SIERRA
80,000 MILES
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GMA
  • MEMBER
  • 1 POST
turn off heater but still puts out hot air. Change to defrost, feet/face, etc. doesn't make any difference
Jan 6, 2012 at 5:39 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Check the air blend door/actuator and also the HVAC control module
Jan 6, 2012 at 5:56 PM
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