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Blend door

Tiny
FSALTER
  • MEMBER
  • 2010 CADILLAC CTS
  • 3.0L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 180,000 MILES
Cold air on driver side hot air on passenger side with A/C on.
Monday, June 10th, 2019 AT 5:43 AM

12 Replies

Tiny
FSALTER
  • MEMBER
  • 8 POSTS
There are three different actuators on passenger side. How do I determine which one is not working? Do I have to remove entire dash to replace it?
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Monday, June 10th, 2019 AT 5:46 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning,

I attached a picture for you to view of the actuator.

https://www.2carpros.com/articles/replace-blend-door-motor

It is number 6 in the drawing.

Roy
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Monday, June 10th, 2019 AT 6:14 AM
Tiny
FSALTER
  • MEMBER
  • 8 POSTS
That is the one that I replaced already but I still get hot air from passenger side.
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Monday, June 10th, 2019 AT 6:17 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
When you command heat and cool, can you feel the motor move?

If you do, then it is not the actuator.

If it does not, remove the actuator and see if it moves off the case.

Roy
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Monday, June 10th, 2019 AT 6:22 AM
Tiny
FSALTER
  • MEMBER
  • 8 POSTS
It moves when I adjust temperature to 90 but stops when when going back down at about 78 degrees.
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Monday, June 10th, 2019 AT 6:49 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
In or out of the case?

Roy
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Monday, June 10th, 2019 AT 6:53 AM
Tiny
FSALTER
  • MEMBER
  • 8 POSTS
In the case.
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Monday, June 10th, 2019 AT 6:55 AM
Tiny
ASEMASTER6371
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Remove the actuator and see if you can move the arm manually to get cold air.

There may be an obstruction in the case door.

Roy
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Monday, June 10th, 2019 AT 7:02 AM
Tiny
FSALTER
  • MEMBER
  • 8 POSTS
Okay, I will try that. But could it also be #7 in picture?
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Monday, June 10th, 2019 AT 7:28 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
If you said it moved with a command from heat to cool and back, good chance you have the correct actuator.

Check the others as well for movement.

Roy
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Monday, June 10th, 2019 AT 7:30 AM
Tiny
FSALTER
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Okay, thanks.
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Monday, June 10th, 2019 AT 7:31 AM
Tiny
ASEMASTER6371
  • MECHANIC
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You are welcome.

Always glad to help.

Keep us updated.

Roy
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Monday, June 10th, 2019 AT 7:33 AM

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