Question about 2001 GMC Yukon XL
No, the battery will not run down due to this problem. When you shut off your truck and pull out the key, the power to the motor will be cut off and should stop blowing. Depending how your vehicle is set up, the blower will stop as soon as you shut off the ignition key, or when the door is opened like it does on my 2005 Chevy Uplander van. If your battery is running low, you either have a worn out battery or some extra accessory is loading it down.
The resistor pack which limits the current to your blower motor when your switch is set on the lower settings is most likely bad. These are usually located close to the blower motor. On my 2002 S10, it is located in the engine compartment on the passenger side, attched to the blower motor air duct. the dealer or local auto parts store will have this part. Unfortunatly, I have not changed one on your specific vehicle, so can't give you more detail than I already have.
Hope this helps.
Posted on Jan 01, 2011
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Posted on Jan 02, 2017
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