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Blower motor not working

Tiny
JIMMY WILEMON
  • MEMBER
  • 2006 BUICK TERRAZA
  • 3.5L
  • V6
  • AWD
  • AUTOMATIC
  • 140,000 MILES
Rear air blower does not work. All fuses good.
Thursday, July 27th, 2017 AT 10:12 AM

9 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
Hello,

It sounds like the rear blower motor or relay has gone out. Here are some guides and diagrams so you can do some simple tests and get the problem fixed.

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

and

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

and

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

Here are some guides to show you where the blower and relay is (below)

Please run some tests and get back to us we are interested to see what it is.

Cheers, Ken
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Friday, July 28th, 2017 AT 4:15 PM
Tiny
ERIC MARTIN
  • MEMBER
  • 1 POST
  • 2007 BUICK TERRAZA
  • 4.0L
  • V6
  • FWD
  • AUTOMATIC
  • 200,000 MILES
I changed the front blower, but it still wont turn on. Is there anything else I can do?
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Friday, July 28th, 2017 AT 4:16 PM (Merged)
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
You can start where you should have started before buying a blower motor. That is to test for both power and ground arriving at the motor to determine where to go next.
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Friday, July 28th, 2017 AT 4:16 PM (Merged)
Tiny
JMFEWELL
  • MEMBER
  • 3 POSTS
  • 2005 BUICK TERRAZA
  • 3.9L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 122,000 MILES
My blowers in the rear of the van are not working. The front heat and AC works fine but the rear will not work. What could it be?
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Friday, July 28th, 2017 AT 4:17 PM (Merged)
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
It could be any number of things like fuses, motor, switch, resister, wiring or relay. The first step is to access the motor and test for power and ground arriving at the motor to determine which one, if any is missing and that will determine what direction to go from there.
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Friday, July 28th, 2017 AT 4:17 PM (Merged)
Tiny
JMFEWELL
  • MEMBER
  • 3 POSTS
Where is the rear blower motor located on a 2005 buick terraza and how do you access it. I've looked online but can't find any diagrams or videos. I know where the front blower motor is but not the rear.
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Friday, July 28th, 2017 AT 4:17 PM (Merged)
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
It's behind the trim panel on the left side of the rear luggage area.

https://www.2carpros.com/images/external/120463485.gif
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Friday, July 28th, 2017 AT 4:17 PM (Merged)
Tiny
JMFEWELL
  • MEMBER
  • 3 POSTS
What is the replacement part number for the wiring on the rear blower motor for a 2005 Buick Terraza. The wiring is shorting out but I cannot find replacement wiring harness.
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Friday, July 28th, 2017 AT 4:17 PM (Merged)
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
That's something you would take up with the dealer if they even make a replacement. That's not something we would know.

I really have doubts that is your problem though. I don't know how you came to that conclusion.
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Friday, July 28th, 2017 AT 4:17 PM (Merged)

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