Question about 2000 Pontiac Grand Am GT

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02 grand prix heater vent positions only work one position ,blower works fine

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This has a mode door actuator which might be failed ...this actuator moves the mode doors inside the hvac unit that directs air flow to certain vents.This actuator is passenger side behind and adjacent to the glove glove box

Posted on Sep 27, 2009

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1 Answer

Heater blower won't turn off. Even when key is removed.


I would check ur blower resistor by the blower, idk if u had other problems before this like the blower only working on certain speeds but, but your problem could be the ignition switch and cylinder could be the contacts are keeping in run position

Mar 10, 2015 | 2005 Pontiac Grand Prix

1 Answer

My heater in my 2004 Grand Prix would work one day then blow nothing the next. It did this for a while now nothing comes through the vents, would it be the blower motor?


Yes, it probably is the blower motor. They also tend to burn the connector that goes to the blower motor when this happens the way you described it happened. You may have to replace both to fix it correctly.

Dec 27, 2010 | 2004 Pontiac Grand Prix

2 Answers

I have a 97 Pontiac Grand Prix, The blower motor only work on high. I have replaced the switch, the resister, and the blower motor. Also when I turn the blower motor on in any of the first 4 position the...


Wires need to be tested at certain points to find out whats going on. It could be as simple as a bad ground somewhere. This needs to be looked at by someone with experience so that more damage is not done. Hope this helps.

Sep 17, 2010 | 1997 Pontiac Grand Prix

1 Answer

2005 Grand Prix heater works fine when blower is off-air coming thru vent gets hot; once blower is turned on air turns cold. Why?


Sounds like a clogged heater core- insufficient coolant circulating through heater core, and as soon as you blow air past the core, it get cooled off.

Jan 09, 2010 | 2005 Pontiac Grand Prix

1 Answer

Hi I have a 1998 Pontiac Grand Prix and the heater blower motor does not work, if I turn the ignition on and the blower motor is in off position my headlights come on. when I turn the blower motor to the...


This sound like the blower motor relay(lo relay) is wired in to the head light switch voltage.You need to follow the wire from the blower relay (there should be 4 wires) thats hot when the ignition is on and make sure it goes to the blower motor.It sounds like a couple wires got switched.

Nov 17, 2009 | 1998 Pontiac Grand Prix

1 Answer

Blower fan only works on high


CHECK THE HVAC CTRL FUSE.

WITH A TEST LIGHT CHECK THE BLOWER RESISTOR FOR POWER ON THE YELLOW, TAN, PURPLE, AND LIGHT BLUE WIRES. THE ORANGE WIRES CONTROL THE HIGH SPEED CIRCUIT. DO THIS FOR EACH POSITION OF THE BLOWER SWITCH.

THE BROWN WIRE ON THE HVAC CONTROL CONNECTOR 1 POSITION B COMES FROM THE HVAC FUSE 20 AMP. NO POWER ON THAT WIRE WILL CAUSE THE BLOWER TO NOT FUNCTION ON THE LOWER SPEEDS.

Jul 14, 2009 | 2000 Pontiac Grand Prix

1 Answer

Fan only works in the off and 5 position, does not work in 1to 4


You probably need to replace the blower motor resistor. Located on the blower motor below your glovebox. about $25 for the resistor.

Apr 10, 2009 | 2003 Pontiac Grand Prix

2 Answers

2004 pontiac gran prix gt


I would suggest replacing the blower motor resistor. When this component fails the blower will only work on one spped or none. This is a very common issue with all automotive models

Nov 04, 2008 | 2004 Pontiac Grand Prix

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