A/C vents not working properly?

2002 BUICK RENDEZVOUS

135,248 MILES • V6 • 4WD • AUTOMATIC

TMARTINEZ4

MEMBER
2 POSTS

The AC/heater blows just fine, but only through the defroster and through the back vents slightly but not at all through the front facing vents. please help. Thank you all in advance!

Apr 27, 2023 at 6:00 PM

JACOBANDNICKOLAS

✓ASE Certified Mechanic
110,194 POSTS

Hi,

Based on the description, the problem seems to be related to a mode door actuator. This actuator is responsible for changing the airflow direction.

Take a look at this link. You may find it helpful.

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

Next, I attached the removal and replacement directions below for a manual climate control system. If you have automatic climate control, let me know.

Let me know if this helps or if you have other questions.

Take care,

Joe

See pics below.

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Apr 27, 2023 at 9:05 PM

TMARTINEZ4

MEMBER
2 POSTS

It does not have automatic climate control, just the basic knobs. Thank you so much for your response, I will order the part and let you know if it works. Thank you so much.

Apr 28, 2023 at 9:54 AM

JACOBANDNICKOLAS

✓ASE Certified Mechanic
110,194 POSTS

Hi,

Thanks for the update. If you can, let me know if that resolves the problems. I'm interested in knowing. Also, feel free to let me know if I can help.

Take care,

Joe

Apr 28, 2023 at 10:38 PM