Why does my rear AC blower keep spinning?

But #36 looks like it would stop it only if the HVAC CM-Aux was the fault. If you pull #36 and it keeps spinning then it is the BMCP-Aux. The blower motor control processor controls the speed of the blower motor by increasing or decreasing the voltage drop on the ground side of the blower motor.

What to do if your Chevy Tahoe blower stops working?

Chevy tahoe suburban rear blower stops working. How to fix. If playback doesn’t begin shortly, try restarting your device. Videos you watch may be added to the TV’s watch history and influence TV recommendations. To avoid this, cancel and sign in to YouTube on your computer. An error occurred while retrieving sharing information.

What to do if your rear blower stops working?

Chevy tahoe suburban rear blower stops working. How to fix. – YouTube Chevy tahoe suburban rear blower stops working. How to fix.

Why is my rear AC not turning off?

Today I disconnected both the front seat (near the shifter) and first rear seat controls for the rear AC. It didn’t change anything. I finally removed the fuse under the first rear seat to get it to stop blowing. Less than a year ago I replaced the front blower motor control module because the front speeds weren’t working right.

Why does my Chevy Suburban not blow heat?

You can’t post conmments that contain an email address. SOURCE: 2003 suburban rear air works fine but won’t blow heat.

When does the rear AC blower turn on?

Three years ago I replaced the rear blower motor control module, which caused the rear AC to start working again. That was no fun with such a tight space to try to loosen and tighten nuts in! Since then there has always been, however, an approximate three minute delay for the rear AC blower to turn on.

Is the rear a / C not blowing cold?

You can’t post conmments that contain an email address. SOURCE: Rear a/c not blowing cold, front works fine.

How does the HVAC work on a blower?

The HVAC control module provides a low side pulse width modulated signal to the blower motor control processor over the blower motor speed control circuit. As the requested blower speed increases, the HVAC control module increases the amount of time that the speed signal is modulated to ground.

How is the speed of the blower motor controlled?

The blower motor control processor controls the speed of the blower motor by increasing or decreasing the voltage drop on the ground side of the blower motor. The HVAC control module provides a low side pulse width modulated signal to the blower motor control processor over the blower motor speed control circuit.

Why does my AC blower not turn off?

As the requested blower speed increases, the HVAC control module increases the amount of time that the speed signal is modulated to ground. As the requested blower speed decreases, the HVAC control module decreases the amount of time that the signal is modulated to ground.

Why is my blower not working on my Chevy Silverado?

Another common problem will be the blower motor will stick in the ON position and never shut off. You can access the resistor module behind the fuse box located on the driver’s side lower dash compartment. You must visually inspect the resistor, and make sure it isn’t melted or burnt. If it is, then replace it.

Is there a problem with the GM blower motor?

If you have a General Motors car or truck from 2002 through 2008 you’ll probably have a blower motor issue at some point. In many cases it’s a problem with the GM blower motor module. The most common complaint when this part fails is the motor will not turn on at all.

Where does the air come from in a GM blower?

As an example, if you select defrost, the mode door points all the air at the windshield. If you select heat, then the air will be directed at the floorboards. In the AC mode all of the air should come out of the air conditioning vents. If you select blend, then you’ll get air coming out of all of the positions.

Can a blower motor be replaced in an AC evaporator?

The blower motor module is close to being the lowest point and will wind up sitting in a bath of water. If you replace this part go the extra step and make sure that the condensation drain is clear on your AC evaporator. Also make sure your old blower motor spins freely and isn’t starting to bind.

Where is the vacuum hose on a 1999 Ford E150 van?

This 1999 Ford E150 van came in with the complaint that the a/c would only blow out of the defroster. The mode actuators in this vehicle are vacuum controlled so checking vacuum is the first point in the diagnostic routine. There is a vacuum hose splice connector under the hood on the passenger side of the vehicle.

What to do if your AC blower is not working?

Disconnect cables to motor and resistor. Remove hose from motor, it should just pull off with little effort. Unscrew motor and resistor. Screw new motor and resistor in. Connect hose to motor. Connect cables to motor and resistor. Turn on car and test AC. Thanks for watching! Loading…

Why does my rear AC blower keep spinning?