2003 Chevy Blazer No Heat

2003 CHEVROLET BLAZER
96,000 MILES • 6 CYL • 4WD • AUTOMATIC
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AKUHLMAN
  • MEMBER
  • 1 POST
As soon as winter hit we found that the heater blows cold air. The thermostat has been replaced and still no heat. What could go wrong with this system? I am freezing!!
Dec 12, 2007 at 12:25 PM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Could be a clogged-up hose or the heater core, heater contol valve, air/blend door stuck close.
Dec 12, 2007 at 1:45 PM
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