2004 Chevrolet Monte Carlo Q&A
2004 Chevrolet Monte Carlo Question: My blower motor doesn't always work.
My blower motor, only in winter, doesn't always work. It will usually work when I start the car. Once I start driving, it stops working. It will usually work and stop when I hit bumps. Other times it works, I hit a bump, then it won't come back on. The colder it is outside, the harder it is for me to have it keep working. - Windsong25
Replace the blower motor, and check the connector to the blower resister/module. - ProfessorG
This is a very difficult situation to provide an accurate diagnosis without having the vehicle at our shop. However, some of the common failures that could result in the symptoms you are describing are: Failing blower motor, failing blower motor resistor or switch, and/or burned terminals on the electrical connector(s) to the blower motor, blower motor switch, and/or the blower motor resistor. If you are unfamiliar with the system and/or unfamiliar with electrical testing, your best option is to bring it to a professional repair shop for proper diagnosis. We are located in Uxbridge and we'd be glad to look at it for you if you'd like. - advancedauto616