blower motor dose not shut of with the key on a 2000 chevy

Asked by Jan 22, 2014 at 12:03 PM about the 1999 Chevrolet C/K 1500 LS 4WD

Question type: Maintenance & Repair

4 Answers

70,235

Sounds like a stuck blower motor relay. Look for it in the underhood fuse box. Tap it with the handle end of a screwdriver. If the motor stops the relay needs replacing. HTH. -Jim

Hi, sorry I know it was a while ago, but I'd like to add to the question. How can I tell whether the blower motor resistor is bad or it's the relay that's bad?? I have a 2003 Mercedes c230K and the battery keeps draining off while the ignition and everyth is shut off. Finally, found that there was a parasitic draw of excess current which stops when disconnecting the blower motor. So, now I must know which one of these two (resistor or relay) is the bad one.

70,235

It's going to be the relay. The relay is like an on/off switch. The resistor reduces power to the blower motor to decrease it's speed. HTH. - Jim

2 of 2 people found this helpful.

Thanks...... could you please tell me how I can test the relay?

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