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.

What speed ? high speed , low ,med ?

03 - 06 Silverado/Sierra blower stays on with key off (how to ...

? 1:32
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, ...

Blower motor won't shut off. - Diesel Place : Chevrolet and GMC ...

www.dieselplace.com/.../76.../208669-blower-motor-wont-shut-off.html

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.

Question - Blower Motor Won't shut off ' Chevy Truck Forum ' GMC ...

www.gmfullsize.com > General > Maintenance

posible blower resystor and relay is all une piece mounted nes blower motor

Have you checked to see if the blower relay is stuck on ?

PULLING THE BLOWER MOTOR FUSE SHOULD MAKE THE BLOWER STOP. HOWEVER, THERE IS ALSO AN AC/HEATER FUSE THAT CAN KEEP THE MOTOR RUNNING. { IN FUSEBOX ON LOWER LEFT SIDE OF DASH }

sounds like a faulty climate control switch...
Call your local salvage yard and ask how much one is where you live...

Sounds like a bower motor resistor to me.

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.

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