What could be wrong with my heat? Have none

Tiny
ANONYMOUS
  • 2007 PONTIAC GRAND PRIX
  • 71,000 MILES

What could be wrong with my heat? Have none

Thursday, November 29th, 2012 AT 1:24 PM

1 Reply

Tiny
WRENCHTECH
  • EXPERT
  • 20,567 POSTS

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 both hot, the heat in that vehicle is controlled by a blend door that regulates heated air flow. It is operated by an electric motor/actuator. The problem can be that the actuator is stripped or inoperative or the door itself could be damaged. This is what needs to be determined by examining the actuator and see if it is responding to heat change commands or not.

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Thursday, November 29th, 2012 AT 2:02 PM

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