Common questions

Where is the blower control module on a GMC Sierra?

Where is the blower control module on a GMC Sierra?

In GM cars there is a blower control module locaed under the dash that controls the blower. When it goes, the blower will run continuously unless you pull the fuse. You’ll need to check the schematic for your car to see what is in that circuit, but the module or relay would be the best guess.

Why does my GM blower motor not turn on?

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. However, it’s also possible for the blower motor to have speed control issues or continue running at all times even with the ignition off.

What happens when you pull the ignition key on a blower?

When it goes, the blower will run continuously unless you pull the fuse. You’ll need to check the schematic for your car to see what is in that circuit, but the module or relay would be the best guess. In the meantime, pull the fuse. It is the heater/AC blower. It continues to run with the key out of the ignition.

How do you reset a blower motor on a GM Truck?

However, you can reset the system by pulling the yellow 60 AMP VSES/ECAS fuse located in the under hood convenience center. After you remove the fuse you then start the truck and let it run for two minutes. Next shut it off and replace the fuse.

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. However, it’s also possible for the blower motor to have speed control issues or continue running at all times even with the ignition off.

However, you can reset the system by pulling the yellow 60 AMP VSES/ECAS fuse located in the under hood convenience center. After you remove the fuse you then start the truck and let it run for two minutes. Next shut it off and replace the fuse.

What does Black Wire mean on GM blower?

The black wire should indicate a strong ground. If you have a good ground and verified power into the module, yet have no electricity flowing to the fan you probably have a bad module.In many cases when I find the problem with the GM blower control module I also find signs of moisture in the heater case that contains the motor and module.

When to apply for GMC blower motor coverage?

For vehicles covered by Vehicle Service Contracts, all eligible claims with repair orders on or after April 8, 2011 are covered by this special coverage and must be submitted using the labor operation codes provided with this bulletin. Claims with repair orders prior to April 8, 2011 must be submitted to the Service Contract provider.

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Ruth Doyle