1999 Chevy Blazer

Tiny
'99 CHEVY BLAZER
  • MEMBER
  • 1999 CHEVROLET BLAZER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 98,000 MILES
My blazer is blowing out air but its not getting hot. We changed the thermostat and checked antifreeze level but still no heat. What should I try next?
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Friday, November 5th, 2010 AT 11:21 AM

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Tiny
WRENCHTECH
  • EXPERT
With the engine at full operating temp, locate the 2 heater hoses where they go into the firewall and feel them to see if they are both hot to the touch. If they are.

The temperature is controlled by the use of an air mix door that is operated by an electric motor/actuator. This door can be jammed or the actuator can be inoperative or have stripped plastic gears internally.
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Friday, November 5th, 2010 AT 11:28 AM

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