No air out vents Cab climate controls don't direction air through vents.

[Nextbook]

2006 Sierra, Duramax 3500 crew cab.

 

Electronic control module with individual side control.

 

Air doesn't flow through vents and the electronic module controller for moving air through vents from floor to windshield are not working either. 

 

Replaced electronic control module at repair shop. Replaced blower motor and resistor which came with updated harness, blower works fine. Did a reset according to directions from YouTube repair suggestions with no results.

 

I would appreciate some ideas as to what further steps are needed. 

Edited February 4, 2020 by Nextbook
Clarifying

[jake111]

Blend door actuators?  Notorious for going bad.  I just replaced one, but it was the easy one which just put heat to the driver side all the time.

 

Rat nest?  Other debris like leaves in the vents?

 

But sorry, I don't know where to start looking...

[Nextbook]

On 2/3/2020 at 11:58 PM, jake111 said:

Blend door actuators?  Notorious for going bad.  I just replaced one, but it was the easy one which just put heat to the driver side all the time.

 

Rat nest?  Other debris like leaves in the vents?

 

But sorry, I don't know where to start looking...

 

[Nextbook]

Thank you for your response, hopefully someone can give me further information on a solution. 

 

Regards, 

Nextbook

[PaulR0580]

It should show up on a Tech2. Have it read at a shop and they can tell you which parts are giving you grief, however, the blend door and two of the other three modules require the removal of the center console....means the seat has to come out. Not rocket science, but a helluva tinker toy project.

[Nextbook]

PaulR0580,

 

Thank you for your response. I will see about getting the Tech2 reading on the vehicle. 

 

Regards,  

Nextbook

[hiking_mike]

Same issue on an 06 1500. There are several blend door actuators, I used all data to determine which part # to order. not to hard to install. 

Was a pain driving in 100 heat index with stuck on defroster on full hot that day driving home.