Heat will not blow out defrost stays blowing out dash vents.
Feb 11, 2021 at 8:44 AM
Air does not blow out of the defrost vents?
2003 CHEVROLET TRUCK
MARK79763
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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,
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Good afternoon,
You have a mode door actuator that changes the direction of the air flow when you command different directions.
https://www.2carpros.com/articles/air-vents-stay-in-the-defrost-position
I attached the procedure and some pictures for you.
Roy
REMOVAL PROCEDURE
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1. Remove the floor air outlet duct extension (1) from the floor duct (2).
imageOpen In New TabZoom/Print
2. Disconnect the electrical connection at the mode actuator (10).
imageOpen In New TabZoom/Print
3. Remove the mode actuator mounting screws from the HVAC module.
4. Remove the mode actuator as an assembly with the actuator cam.
You have a mode door actuator that changes the direction of the air flow when you command different directions.
https://www.2carpros.com/articles/air-vents-stay-in-the-defrost-position
I attached the procedure and some pictures for you.
Roy
REMOVAL PROCEDURE
imageOpen In New TabZoom/Print
1. Remove the floor air outlet duct extension (1) from the floor duct (2).
imageOpen In New TabZoom/Print
2. Disconnect the electrical connection at the mode actuator (10).
imageOpen In New TabZoom/Print
3. Remove the mode actuator mounting screws from the HVAC module.
4. Remove the mode actuator as an assembly with the actuator cam.
Images (Click to enlarge)
Feb 11, 2021 at 11:09 AM
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