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
109,867 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.

Images (Click to make bigger)

SPONSORED LINKS

Was this

answer

helpful?

Yes

No

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.

Was this

answer

helpful?

Yes

No

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

JACOBANDNICKOLAS

MECHANIC
109,867 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

Was this

answer

helpful?

Yes

No

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