Need to replace heater motor - 2002 Pontiac Bonneville

Here's a link to your heater.

Its located under dash,or near glove box.

The dash panel lower side has to be out.

HEATER BLOWER MOTOR

Its faulty blower motor resistor. The low and medium speed on blower motor is controlled by resistor and its actual speed is high. So because resistor is not working, blower motors actual speed which is high is working.

It can be faulty blower motor or faulty blower motor resistor. Get the blower motor inspected. If it's faulty it has to be replaced.

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For blower motor testing and replacing, check the link below: ----

Blower motor Testing/replacing for all vehicles?

http://repairhelpcenter.blogspot.in/2012/02/blower-motor-replacing-for-all-vehicles.html

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These will help.

Thanks.

do you mean you have no heat or no blower motor working.for the heat make sure the cooling system is full .then check the heater hoses to see if they are the same temp with the engine at operating temp.if not then you probably have a plugged heater core that will need replacing or you can try to unplug it by disconnecting the heater hoses and connect spare hoses to the spiggots and pour clr into the heater core and let it sit for 30-60 minutes.flush out and reconnect heater hoses and run to operating temp and check.how long has it been since the thermostat has been changed.if its the blower motor check the fuses.if they are good then try tapping the blower motor to see if it starts to work if so then you will need to replace the blower motor.if not then you will have to check the motor resistor as these go bad often.

Dear James,

Try This. Go To YouTube And Type In "replace heater core blower 2003 GMC". You Might Get A Helpful Video Showing You One Being Replaced.

Hope This Helps.

Alex :o)

Hi,
You need to remove the heater unit. Then remove the top of the heater motor and then the motor is held in by 3 screws.Remove these 3 screws to remove the motor.
Let me know if you need more information.
Thanks
Jason

By heater motor if you mean blower motor for the heater system, it is located at the right rear of the engine compartment, under the hood. You will need to possibly cut the rubber barrier around the motor (the round part that sticks out) to access the (5) 7mm bolts. You will probably need to remove the ECM (Engine Control Module) and bracket to completely remove. If you are having issues with the blower motor fan not working I would suspect the blower resistor assembly or the 6 wire connector going to it, before condemning the blower motor. If you mean the heater core by saying heater motor, then it is directly located beside the blower motor and is a lot more difficult to remove. The heater case will need to be separated, and there are hidden bolts located on the inside of the trucks cab.

you will need to replace the heater rheostat unit, its attatched to the heater motor,

fuse blows. unplug heater blower motor turn ignition on, turn heater on, does fuse blow? if not need to replace heater blower motor

yes that is correct, remove glovebox , metal bracket in front ( mark which way round this bracket goes it will go back wrong and glove box wont fit ) , unplug electrical plug from heater motor, unscrew 3 bolts/screws from motor replace in reverse..30 min tops..

did u replace the fan motor.try to tap on the fan motor see if it comes on.