HEATER DOESNT BLOW HOT AIR JUST WARM AIR

  • Tiny
  • Anonymous
  • 2000 GMC Sierra
  • 200,000 miles

Heater doesnt blow hot air just warm air. Hoses are all warm. Its running at proper temp what could it be

Monday, March 4th, 2013 AT 10:08 PM

1 Reply

  • Tiny
  • homer1967
  • Expert
  • 902 posts

I would suspect a restricted heater core or a blend door issue.

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Tuesday, March 5th, 2013 AT 12:29 AM

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