1996 Chevy Tahoe heater blows cold air

Tiny
REBORN27SHENAULT@HOTMAIL.
  • MEMBER
  • 1996 CHEVROLET TAHOE
Heater problem
1996 Chevy Tahoe V8 Four Wheel Drive Automatic 143k miles

i changed the thermostat thinking it was the problem, it wasnt, what do you think the problem is?
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Thursday, October 14th, 2010 AT 3:18 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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Thursday, October 14th, 2010 AT 7:27 AM

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