Mechanics

PONTIAC GRAND PRIX DOOR PROBLEM

2006 Pontiac Grand Prix • 170,000 miles

My heater is blowing cold air out. The antifreeze is all top up. What do you think is wrong.
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Guest
November 23, 2012.




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.

Wrenchtech
Nov 23, 2012.
Do the heater hoses get hot? Does the engine reach normal operating temp? Also, temp door under dash may have issues?
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JDL
Nov 23, 2012.
Hey wrench, have a good holiday, I didn't see you.

JDL
Nov 23, 2012.
No problem. Happy Holidays to you too.

Wrenchtech
Nov 23, 2012.

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