Question about 2002 Pontiac Sunfire

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Heater fan will only work on high other settings won't work 2002 Pontiac Sunfire?????

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In most cases the heater switch has gone bad. I would check eBay or a junkyard, either local or on-line for a used replacement. The next most probable cause would be the blower resistor. Those are usually around $40. or more (new) at a parts store. Again it is more likely the switch. You can remove the old switch and check for continuity in the non-off positions with an ohm meter. Good luck!

Posted on Jan 30, 2010

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I have a 2002 Pontiac Sunfire. My fan stopped producing air (hot and cold altogether) - from the lowest setting to highest setting does not work.

sounds like a the heater/ blower fan relay went bad. Unless you're mechanically-inclined you'll need a mechanic to install the replacement.

Do a Google search for the relay or blower motor and/or search for a Chevy Cavalier (same car) forum to find a fix - if you want to tackle it yourself.


Oct 30, 2013 | 2002 Pontiac Sunfire

1 Answer

Fan only works on high speed

Common issue is a blown 'blower resistor'. Call the dealership or an auto parts store for the part, and look on Youtube or Google-it to replace it yourself.



Oct 01, 2012 | 2002 Pontiac Sunfire

1 Answer

Heat stopped working in 2000 pontiac sunfire

With blower on high and tempature to max heat check to see if you have good air flow in all mode selections (defrost, vent, floor etc.). If so and you still have no heat then check heater core hose going from engine to inside car to heater core with vehicle running and coolant tempature about half on guage. If both hoses are hot and coolant in radiator/overflow bottle is full then hot cold blend door is stuck in cold position. If coolant level is low you will get no heat, check coolant level first.

Dec 18, 2011 | 2000 Pontiac Sunfire

1 Answer

How do a replace the blower motor resistor on a 2002 pontiac sunfire?

Should be on Driver Side under dash, will have 4 wires colored : BLK/WHT, TAN, LT BLU & ORG ! The Resistance is connected to the harness that control the Fan Speed on the Heater Control Panel !

Aug 11, 2010 | 2002 Pontiac Sunfire

1 Answer

Heater wont work on high

it is probably the fan relay which controls all 3 speeds for your heater and cooling a/c fan in the 99 pontiac sunfire it is located on the passenger side firewall under the dash about 1/2 way up it is a white circuit board about2 x3 inches and plugs into a circuit on the firewall about 75.00 to replace if you do it yourself otherwise labor is xtra

Dec 16, 2009 | 1999 GMC Safari

1 Answer

My lights on my 2002 pontiac sunfire keeps going out all light including the signals only the high beam works

check the auto on light sensor.....high beams wired to work to quick flash someone with the rest off

Dec 01, 2009 | 2002 Pontiac Sunfire

1 Answer

Why would make the fan stay on in a 2002 sunfire after you shut the engine off

It has an electric fan and is set to stay on to cool the car once parked nothing to worry about should cut off.

Nov 25, 2009 | 2002 Pontiac Sunfire

1 Answer

04 pontiac sunfire battery light and panel lights dim

sounds like your alternator. if you have a multimeter then turn on your car and turn your headlights on/ac and heater fan on high/wipers on and blinkers on. once they are all on hook the meter to the battery and if it reads less then 14 volts then the alt is bad. or you can just take it to a shop and have it tested.

Mar 20, 2009 | 2004 Pontiac Sunfire

1 Answer

1998 pontiac sunfire interior AC fan always on high.

This problem is caused by a burnt out fan speed dropping resistor, the resistor is near the blower fan on the air box.

Dec 07, 2008 | 1998 Pontiac Sunfire

1 Answer

Heater in 2002 sunfire won't work on low settings

U need treplace the fan motor speed control resistor.

Nov 23, 2008 | Pontiac Sunfire Cars & Trucks

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