heater constantly blows out hot air

2001 CHEVROLET BLAZER
120,000 MILES
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KWILSON531
  • MEMBER
  • 1 POST
all vents work but even when ac is turned on the heater blows out very hot air. you cannot turn it off.
Jan 6, 2012 at 12:31 AM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Check the air blend door could be stuck in the heat position
Jan 6, 2012 at 12:44 AM
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