Mode actuator location and installation instructions needed

BRENDA DAY

MEMBER
2007 CHEVROLET TRAILBLAZER
V6
4WD
AUTOMATIC
172,000 MILES

My air does not bow out front vent.S we have a mode actuator but do not know where it goes and how to get there.

Thursday, July 1st, 2021 AT 9:59 PM

3 Replies

JACOBANDNICKOLAS

MECHANIC
109,700 POSTS

Hi,

The mode door actuator is located under the dash on the left side of the HVAC box.

If you look below, I attached the directions and pics for replacement specific to this vehicle. I am basing this on a manual temp control system. If the vehicle has automatic temp control, let me know.

The last two pics are the recalibration procedure. One way is with a scan tool and the other is without.

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

Take care,

Joe

See pics below.

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Thursday, July 1st, 2021 AT 11:42 PM

BRENDA DAY

MEMBER
3 POSTS

My 2007 Trailblazer is dual climate control you can set drivers side and passenger side is this manual or automatic.

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Sunday, July 4th, 2021 AT 11:11 AM

JACOBANDNICKOLAS

MECHANIC
109,700 POSTS

That sounds like it is manual. Automatic functions like a thermostat in your house. You set a temperature and it maintains that temperature. Dual climate is on both designs.

Let me know.

Joe

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Sunday, July 4th, 2021 AT 8:39 PM