Blend door

2010 CADILLAC CTS
180,000 MILES • 3.0L • 6 CYL • 2WD • AUTOMATIC
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FSALTER
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Cold air on driver side hot air on passenger side with A/C on.
Jun 10, 2019 at 5:43 AM
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FSALTER
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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?
Jun 10, 2019 at 5:46 AM
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ASEMASTER6371
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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
Images (Click to enlarge)
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Jun 10, 2019 at 6:14 AM
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FSALTER
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That is the one that I replaced already but I still get hot air from passenger side.
Jun 10, 2019 at 6:17 AM
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ASEMASTER6371
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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
Jun 10, 2019 at 6:22 AM
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FSALTER
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It moves when I adjust temperature to 90 but stops when when going back down at about 78 degrees.
Jun 10, 2019 at 6:49 AM
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ASEMASTER6371
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In or out of the case?

Roy
Jun 10, 2019 at 6:53 AM
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FSALTER
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In the case.
Jun 10, 2019 at 6:55 AM
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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
Jun 10, 2019 at 7:02 AM
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FSALTER
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Okay, I will try that. but could it also be #7 in picture?
Jun 10, 2019 at 7:28 AM
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ASEMASTER6371
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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
Jun 10, 2019 at 7:30 AM
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FSALTER
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Okay, thanks.
Jun 10, 2019 at 7:31 AM
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ASEMASTER6371
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You are welcome.

always glad to help.

Keep us updated.

Roy
Jun 10, 2019 at 7:33 AM