Monday, September 4th, 2023 AT 5:25 PM
KNARLYOAK
- MEMBER
- 2008 BUICK ENCLAVE
- 130,000 MILES
A/C heater blower motor relay.
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Where is the A/C heater blower motor relay located and how to replace it?
4 Replies
JACOBANDNICKOLAS
- MECHANIC
- 109,779 POSTS
Hi,
The HVAC blower motor doesn't use a relay. Instead, there is a blower motor control module.
If you look at the pic below, I highlighted the module. This component takes the place of the relay and blower motor resistor.
I'm not sure if it isn't working at all, but I attached the diagnostics related to a malfunctioning blower motor. Take a look through them and let me know if they help.
Take care,
Joe
See pics below.
The HVAC blower motor doesn't use a relay. Instead, there is a blower motor control module.
If you look at the pic below, I highlighted the module. This component takes the place of the relay and blower motor resistor.
I'm not sure if it isn't working at all, but I attached the diagnostics related to a malfunctioning blower motor. Take a look through them and let me know if they help.
Take care,
Joe
See pics below.
Images (Click to make bigger)
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Monday, September 4th, 2023 AT 10:37 PM
JAN BOND
- MEMBER
- 2 POSTS
The fan wouldn't shut off, so we pulled out the fuse. We went to Auto Zone and he sold us a relay but we couldn't figure out where it went. Apparently this is why, it's not the part we needed. We are novices at this, trying to save some money and not take it to our mechanic. Is this relatively easy to install? Do you have a diagram? Thanks for your help.
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Wednesday, September 6th, 2023 AT 11:44 AM
JAN BOND
- MEMBER
- 2 POSTS
Thanks for the response. I sent a follow up question yesterday but now I don't see it, so I'll try again.
The fan would not turn off, even with the car off, so we took out the fuse. AutoZone sold us a relay, saying that 98% of the time that is the problem. Apparently, he didn't know what he was talking about. Your answer explains why we couldn't where to install this. We are novices at this, hoping to save a trip to the mechanic. Do you have installation instructions so we can see if this is something we can do? Thanks.
The fan would not turn off, even with the car off, so we took out the fuse. AutoZone sold us a relay, saying that 98% of the time that is the problem. Apparently, he didn't know what he was talking about. Your answer explains why we couldn't where to install this. We are novices at this, hoping to save a trip to the mechanic. Do you have installation instructions so we can see if this is something we can do? Thanks.
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Thursday, September 7th, 2023 AT 11:11 AM
JACOBANDNICKOLAS
- MECHANIC
- 109,779 POSTS
Hi,
I attached the directions below for replacing the blower motor control module. It is really easy to do. There are two screws that hold it in place and an electrical connector to disconnect.
Also, I added the last picture so you can see the OEM part number.
Let me know if this helps or if you have other questions.
Take care,
Joe
See pics below.
I attached the directions below for replacing the blower motor control module. It is really easy to do. There are two screws that hold it in place and an electrical connector to disconnect.
Also, I added the last picture so you can see the OEM part number.
Let me know if this helps or if you have other questions.
Take care,
Joe
See pics below.
Images (Click to make bigger)
Was this helpful?
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Friday, September 8th, 2023 AT 5:46 PM
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How to Use a Test Light
How to Replace the A/C Blower Motor
Heater Not Working
