HVAC air flow

2004 BUICK RANIER

67,000 MILES • V8 • AWD • AUTOMATIC

MICHAELLYNELLE

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I am unable to redirect the air flow to the dash vents. The AC is working and directs the air flow to the windshield or the floor outlets. In the auto mode or the manual the damper door is not redirecting the air flow.

Jul 23, 2008 at 9:11 AM

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KASEKENNY

CAR REPAIR CONTRIBUTOR
18,907 POSTS

The issue with this is the mode door actuator has most likely failed.

So here is a guide that will talk about this:

https://www.2carpros.com/articles/air-vents-stay-in-the-defrost-position

I am attaching the process from the manual below on how to replace this so if it were me, I would replace this and retest the operation.

Also, I am attaching the calibration process as this will need to be completed after it is replaced.

Thanks

Images (Click to enlarge)

Apr 20, 2022 at 7:00 PM