Question about 2002 Chevrolet Silverado

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Blower motor stays on high, even with key out

2002 Chevy silverado - Blower stays on high, heat on high. Motor runs with key out - will not stop.

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  • Anonymous Jan 15, 2009

    I have researched this because I am currently having the same problem....Looks to be the Blower motor resistor is shorting at its connections subseqently sending a constant power through a secondary source.

  • Anonymous Mar 18, 2014

    2008 ford expedition blower stays on high even if i try lowering it

  • Anonymous Mar 25, 2014

    it sometimes stays on after turning the ignition key off

  • Anonymous Mar 25, 2014

    when the heater pulsates high and low, what is going on?

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The blower motor speed control module is defective, replace it.

Posted on Dec 24, 2008

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Check your ignition. power not suppose to go to blower motor with key out.

Posted on Dec 24, 2008

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Dec 11, 2015 | 2004 Chevrolet Silverado 3500

1 Answer

What is making my 2005 Silverado's blower motor stay on high even when the truck is turned off? It keeps running, it drained my battery.


Your BCM (body control module), must have gone bonkers. Have it checked out. Might just need a little tweaking-like re-setting.
Good luck.

Dec 05, 2011 | 2005 Chevrolet Silverado

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2006 Chevy Silverado 4wd HD. Blower motor started running all the time even whe the key was removed. I removed the fuse under the hood and the fan stopped. It now works only on speeds 1-4. Is there a high...


there could be partial contact in the blower controls which has resulted in total loss of contact, in blower speed affected. replacement of the entire blower control switch should resolve it

Dec 26, 2010 | 2006 Chevrolet Silverado

1 Answer

Vent fan running all the time even with key out of switch


You have a bad blower motor relay, when the relay goes bad. It can freeze in the on position keeping the contact closed to run your blower motor. Inspect the blower motor relay and wire harness for any short due to burnt wire, this is a common issue with that year of Silverado's
Thank you for using fixya and good luck.

Jun 01, 2010 | 2002 Chevrolet Silverado 1500

1 Answer

The heater fan on my 98 chevy silverado stopped working... worked on high at first but made a high pitched noise and stopped all together


Run 12V directly to the motor and see if it will run, if it dosent than the motor is bad, if it does than the resister is bad, the resister makes the blower run and also regulates the speeds for the blower, but chanses are if it was making a high pitch squeel before it quit the motor went out.

Dec 10, 2009 | 1999 Chevrolet Silverado 1500

1 Answer

THE A/C BLOWER MOTOR ONLY RUNS ON HIGH SPEED, THE


Blower motor resistor,you need a new 1. It is close to the blower motor in the black casing.

Jul 27, 2009 | 2002 Chevrolet Silverado 1500HD

2 Answers

Blower motor or resistor?


I had a truck about the same year with the same problem, it was the wiring harness, but id check the resistor and the fan first before replacing anythings,

May 20, 2009 | 2002 Chevrolet Silverado 1500

1 Answer

My 2002 silverado heat wont shut off


replace the blower motor speed control resistor

Feb 20, 2009 | 2002 Chevrolet Silverado

3 Answers

Blower won't shut off


You will need a Blower motor resistor and maybe a blower motor resistor connector end. If you look under the dash on the passenger side(may need to remove smooth black cover, vents will be sticking out) you will see a connector going straight up into the blower motor resistor(7 wires/slightly in front of blower motor). Pull out the connector and check for melted terminals/wires. If no melted terminals just replace blower motor resistor with part # 89019088 per GM to revert to part before 04 in order to stop blower motor resistor relay from hanging. Let me know if i can help more.

Jan 02, 2009 | 2004 Chevrolet Silverado

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