Mechanics

CHEVY BLOWER FAN

2003 Chevrolet Silverado

Heater problem
2003 Chevy Silverado Four Wheel Drive Automatic 105, 00 miles

Yesterday I went to start the P/U. Battery was dead.
Replaced the battery and it started right away.

I now noticed that I couldn't raise or lower the blower speed. It was stuck in high speed. The control button showed that it went up faster or slower. But there was no actual change in fan speed. Turned the P/U off and the fan continued on high speed.

Pulled the 40 amp fuse and the fan stopped.

Any ideas?
Thanks
Avatar
Rob3
April 21, 2008.




Did it stay on all the time even with the key off? Doea it have automatic controls? If yes you may need to have it scanned for codes.

Tiny
Rhall77
Apr 23, 2008.
With the key off and ever tihng else, it continued to blow on Hi. Keys out of the ignition. Gone to help the wife with her shopping.

Tiny
Rob3
Apr 23, 2008.
Un plug the blower motor resistor and see if it shuts off. May be a shorted resistor.

Tiny
Rhall77
Apr 24, 2008.
Where is the resistor located?
AD

Tiny
Rob3
Apr 24, 2008.
Down by the heater box on the passenger floor. It has 4 to 6 wires on it by the blower motor. See if the plug is burned or not.

Tiny
Rhall77
Apr 24, 2008.

AD