CHEVY BLOWER FAN

2003 Chevrolet Silverado

Tiny

Rob3

April, 21, 2008 AT 11:17 AM

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

FOUND 263 RELATED QUESTIONS

5 Answers

Tiny

rhall77

April, 23, 2008 AT 7:23 AM

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

Rob3

April, 23, 2008 AT 5:56 PM

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

rhall77

April, 24, 2008 AT 10:17 AM

Un plug the blower motor resistor and see if it shuts off. May be a shorted resistor.

Tiny

Rob3

April, 24, 2008 AT 11:52 AM

Where is the resistor located?

Tiny

rhall77

April, 24, 2008 AT 11:54 AM

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.

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