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Ask GM Tech (Cam) Your Own Question
GM Tech (Cam)
GM Tech (Cam), Chevy Technician
Category: Chevy
Satisfied Customers: 15201
Experience:  GM Grand Master Technician 2007. 14 years experience.
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Front ac/heater blower stopped working. Was intermittent now

Customer Question

Front ac/heater blower stopped working. Was intermittent now doesn't work at all. Pulled out fan motor and used jumper wires from battery and motor works fine, Not sure how to test further. Replaced resistor near blower a couple months ago. Bought it from the Chevy dealer. The system is the automatic dual control
JA: Have you checked the coolant level? Has there been any leaking from the hoses?
Customer: Coolant is fine. Don't see any leaks
JA: What is the make/model/year of your car?
Customer: 2004 Chev suburban LT AWD 1500
JA: Are you fixing your Suburban yourself? What have you tried so far?
Customer: Trying to repair myself. Pulled blower motor and jumped it to battery Motor works fine. Tried doing ohms test on resistor but not sure what readings should be on different poles Turned on key and have power to resistor.
JA: Anything else you want the mechanic to know before I connect you?
Customer: New resistor from GM dealer about 2 months ago
Submitted: 7 months ago.
Category: Chevy
Expert:  AMEDEE replied 7 months ago.

Hello and welcome!

My name is ***** ***** I can assist you with your question.

Expert:  AMEDEE replied 7 months ago.

Can I start by getting your VIN?

Thank you!

Customer: replied 7 months ago.
1GNFK16Z84J325129
Expert:  AMEDEE replied 7 months ago.

Can you tell me what has been replaced for this problem?

The resistor? You mean the blower motor control processor?

Customer: replied 7 months ago.
Expert:  AMEDEE replied 7 months ago.

Ok, have you checked the inputs to the blower motor or the control processor?

Are you looking for some tests you can run to pinpoint the root cause?