No power to blower motor?

BRETT WARREN

MEMBER
2010 CHEVROLET MALIBU
2.4L
4 CYL
2WD
AUTOMATIC
200,000 MILES

The A/C worked great then the blower motor went bad, it wouldn't spin freely also when it completely quit the lights on the control panel wouldn't turn on. So, I replaced the blower motor and it still doesn't work. I've checked all of the fuses and relays. The instrument cluster also quit working however it will come on from time to time, but something is preventing it from receiving power. The instrument cluster issue started a few months before the blower motor went out and also when the blower motor did work it only worked on high.

1 Reply

KEN L

MASTER CERTIFIED MECHANIC
47,513 POSTS

So, these will be separate problems, we only handle one problem per thread, please post your new question here, you must be logged in.

https://www.2carpros.com/questions/new

We will handle the blower motor issue on this thread. The first thing we need to do is check for power at the RUN RLY fuse in the fuse box under the hood on the left side with the system on. Then check for power at the HVAC CTRL BATT and HVAC CTRL IGN fuse on the BCM which is side the car, this guide can help:

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Here are the HVAC and blower motor system wiring diagrams so you can see how the system works, also I would check the ground G203 under the center console to the blower motor. This guide can show you how:

https://www.2carpros.com/articles/blower-fan-motor-works-on-high-speed-only

Check out the images (below). Please let us know how it goes.

Images (Click to make bigger)