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
  • 901 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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