Heater only stay on vent won’t transfer vents?

2015 CHEVROLET EQUINOX
84,000 MILES • 6 CYL • AUTOMATIC
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KB1012021
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  • 4 POSTS
My heat and air works good but they only stay on vent won’t transfer to defroster
Nov 22, 2025 at 1:24 AM
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.
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KRAKENAUTO
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 40 POSTS
A bad mode door actuator can cause the inability to change the airflow direction to different vents. Instructions below on how to get to it and replace it.

Remove instrument panel insulator panel - left side. Refer to Instrument Panel Insulator Panel Replacement - Left Side.
Remove the communication interface module. Refer to Communication Interface Module Replacement.
Reposition any wiring or hoses to gain access to mode control cam actuator.

Mode Control Cam Actuator
Procedure

Disconnect wiring connector at actuator.
Calibrate the mode control cam actuator.
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Nov 22, 2025 at 4:59 PM
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STRAILER
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  • 54,178 POSTS
I agree with KRAKENAUTO, it does sound like a bad MODE blend door actuator. Please let us know what happens.
Nov 23, 2025 at 9:39 AM
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KB1012021
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Thank you
Nov 23, 2025 at 10:29 PM
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STRAILER
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Please let us know what happens ;)
Nov 24, 2025 at 9:36 AM
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KB1012021
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Ok got a friend that’s gonna look at it over thanksgiving thank you
Nov 24, 2025 at 10:08 AM
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STRAILER
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Sounds good, have a nice holiday!
Nov 25, 2025 at 9:02 AM
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KB1012021
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You too happy thanksgiving
Nov 25, 2025 at 9:34 PM