The fan works and sounds like the door is trying to switch from vent to defrost, but no air on top of dashboard.
Oct 9, 2020 at 3:17 PM
Defroster not working?
1997 BUICK PARK AVENUE
MICKEYD29
- MEMBER
- 1 POST
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KASEKENNY
- ✓ASE Certified Mechanic
- 18,907 POSTS
Yeah, it sounds like the mode door actuator is the issue. Here is the material from the manual. It is not terribly detailed but basically the mode actuator should be on top of the HVAC housing behind the glove box.
Here is a guide that goes through the basics of the blend door which is a different door but gives a little more general information:
https://www.2carpros.com/articles/replace-blend-door-motor
Run through this material and let us know what questions you have. Thanks
Here is a guide that goes through the basics of the blend door which is a different door but gives a little more general information:
https://www.2carpros.com/articles/replace-blend-door-motor
Run through this material and let us know what questions you have. Thanks
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Professional Diagram for 2CarPros Members
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Professional Diagram for 2CarPros Members
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Oct 9, 2020 at 4:28 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.