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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. 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.
AnonymousMar 18, 2014
2008 ford expedition blower stays on high even if i try lowering it2008 ford expedition blower stays on high even if i try lowering it
AnonymousMar 25, 2014
it sometimes stays on after turning the ignition key offit sometimes stays on after turning the ignition key off
AnonymousMar 25, 2014
when the heater pulsates high and low, what is going on?when the heater pulsates high and low, what is going on?
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https://www.youtube.com/watch?v=PkltkvLDhIg
Apr 7, 2014 - Uploaded by MAY03LT
The HVAC blower in this 2003 Silverado stays on speed 5 even with the key off. Here's how to turn speed 5 of the blower off(while keeping speeds 1-4) and ho. ... How to replace blowermotor resistor in Chevrolet Silverado - Duration: 5:06. ... 2004Tahoe rear brake service (replace pads, clean/lube slides, ...
Jan 10, 2008 - 11 posts - 7 authors
I have read through many posts on blower motor issues but no one had the same issue I have. ... If I shut the truck off, it still won't shut off and runs until the battery is dead.... 2002 GMC Sierra RCLB 1500 4X4 SLE, 7 1/2' Fisher plow.
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
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
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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.
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,
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.
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.
2008 ford expedition blower stays on high even if i try lowering it
it sometimes stays on after turning the ignition key off
when the heater pulsates high and low, what is going on?
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