No air blowing out front vents or defroster?

2005 PONTIAC MONTANA
172,661 MILES • 6 CYL • 2WD • AUTOMATIC
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ALCARRJR1972
  • MEMBER
  • 1 POST
No air blowing out front vents or defroster you turn on rear controls air is blowing out vents not getting hot either.
Feb 28, 2025 at 3:46 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.
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JACOBANDNICKOLAS
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 110,190 POSTS
Hi,

It sounds like you may have more than one thing happening. As far as the air flow direction is concerned, it is controlled by the mode door actuator.

The actuator is located at the end of the HVAC box under the dash. I attached directions below for replacing it. However, before doing that, check to make sure nothing has come disconnected. If everything appears okay, remove the actuator and keep it plugged into power. Change the airflow request to see if the actuator responds.

I attached the directions below.

I hope this helps.

Take care,

Joe

See pics below.
Feb 28, 2025 at 9:36 PM
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