SPONSORED LINKS

Blower motor doesn't work

Tiny
SVJORN
  • MEMBER
  • 2008 GMC ACADIA
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 52,000 MILES
The blower wont come on on our vehicle even though it shows the bars lit up as if it is on. The fuses are all good and I can't seem to find a relay any where for the fan.
Monday, June 20th, 2011 AT 6:56 PM

13 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Hello,

It sounds like the blower fan went out but to be sure here is a guided to help test it and the air conditioner a d blower motor wing diagrams so you can see how the system works.

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

and

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

Check out the diagrams (Below). Please let us know what you find. We are interested to see what it is.
Images (Click to make bigger)
Thumb
Thumb
Thumb
Thumb
Thumb
Thumb
Thumb
Thumb
Thumb
Thumb
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Monday, June 20th, 2011 AT 7:45 PM
Tiny
SVJORN
  • MEMBER
  • 5 POSTS
I am talking about the fan inside the car for your heater and a/c to blow inside the car. Maybe you call it a blower instead of a fan. Is there a relay for this fan/blower somewhere?
Was this
answer
helpful?
Yes
No
+8
Monday, June 20th, 2011 AT 8:03 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
There's no relay involved or blower motor resistor,it uses a blower motor control module instead

Check the HVAC blower fuse if okay-the problem is coming from the blower control module or the HVAC contol module-have it checked

read the guides below on testing wiring and using a test light

https://www.2carpros.com/articles/how-to-check-wiring

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

The wiring for the blower motor is attached below
Images (Click to make bigger)
Thumb
Thumb
Was this
answer
helpful?
Yes
No
Monday, June 20th, 2011 AT 9:14 PM
Tiny
SVJORN
  • MEMBER
  • 5 POSTS
I will check that, Thanks for your help!
Was this
answer
helpful?
Yes
No
+1
Monday, June 20th, 2011 AT 10:14 PM
Tiny
SVJORN
  • MEMBER
  • 5 POSTS
Where is the blower control module and the HVAC module at?
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
+2
Tuesday, June 21st, 2011 AT 3:34 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Im sorry at this present moment I cannot enter the GMC Acadia module-sorry again-when available I'll send it asap
Was this
answer
helpful?
Yes
No
+1
Tuesday, June 21st, 2011 AT 6:33 PM
Tiny
SVJORN
  • MEMBER
  • 5 POSTS
I found it and for now have it going. THanks for your help.
Was this
answer
helpful?
Yes
No
+1
Tuesday, June 21st, 2011 AT 8:27 PM
Tiny
GMCACADIAOWNER
  • MEMBER
  • 1 POST
Hey svjorn,

I'm having the same problem you had. The blowers won't seem to turn on. I was wondering what you did to fix it.

Thanks for the help!
Was this
answer
helpful?
Yes
No
+3
Monday, September 26th, 2011 AT 5:34 PM
Tiny
STEVEOG
  • MEMBER
  • 1 POST
Having the same problem. Blower works. Where is the hvac module located? Fuses are good.
Was this
answer
helpful?
Yes
No
+1
Tuesday, April 19th, 2016 AT 7:43 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,878 POSTS
Hey STEVEOG, found the module for you it looks like it is integrated into the panel itself here is the diagram I found, let me know what you find.
Image (Click to make bigger)
Thumb
Was this
answer
helpful?
Yes
No
Tuesday, April 19th, 2016 AT 8:54 AM
Tiny
REY-GTS
  • MEMBER
  • 1 POST
I had this problem is was the blower motor cost me $121.00 for anew one all fixed! I love this site.
Was this
answer
helpful?
Yes
No
Thursday, September 12th, 2019 AT 12:08 PM
Tiny
2CP-ARCHIVES
  • MEMBER
  • 4,542 POSTS
  • 2008 GMC ACADIA
  • 76,777 MILES
Where r relays in underhood fuse box for a/c? Front fan does not work but back ones are fine. Will changing these help with fan problem
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
+1
Thursday, September 12th, 2019 AT 12:09 PM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
It ' in the underhood fuse box and should be clearly marked on undreside of cover. It'sa 40 amp fuse. It could be the module is no good as well or the control.
Was this
answer
helpful?
Yes
No
Thursday, September 12th, 2019 AT 12:09 PM (Merged)

Please login or register to post a reply.

Related Blower Fan Not Working Content

VIEW MORE

Sponsored links