2017 Tahoe with no air in front of cabin. Only rear.

Trying to figure out what’s going on with my Tahoe. I cave no control over the direction of air in the front of my cabin, only the rear.

I’ve changed front blower motor and the resistor to no avail. I have the dash pulled apart to change out the dash control unit and hvac control module, but figured I’d post here before spending more money on possible cheap fixes.

Fuses are all good.

TheMaineEvent said:

Trying to figure out what’s going on with my Tahoe. I cave no control over the direction of air in the front of my cabin, only the rear.

I’ve changed front blower motor and the resistor to no avail. I have the dash pulled apart to change out the dash control unit and hvac control module, but figured I’d post here before spending more money on possible cheap fixes.

Fuses are all good.

Click to expand...

um, have you scanned it for codes? checked operation of the blend door actuators?
need full disclosure of what has and has not been done.

I have a code reader but nothing shows. I called dealership to see about them scanning codes and they 12 days out.

I have not checked anything else.

Just went to a local garage and they said I have a u1510 code, among many others.

according to google that code points to the HVAC control module

TheMaineEvent said:

Trying to figure out what’s going on with my Tahoe. I cave no control over the direction of air in the front of my cabin, only the rear.

I’ve changed front blower motor and the resistor to no avail. I have the dash pulled apart to change out the dash control unit and hvac control module, but figured I’d post here before spending more money on possible cheap fixes.

Fuses are all good.

Click to expand...

Sounds like a control unit or blend door issue. @swathdiver may be able to give you some troubleshooting suggestions to zero in on the source of your issue.

TheMaineEvent said:

Just went to a local garage and they said I have a u1510 code, among many others.

Click to expand...

Post the codes, all of them. Ought to be some "B" codes in there.

TheMaineEvent said:

Just went to a local garage and they said I have a u1510 code, among many others.

Click to expand...

others???????
need those codes, not just "others"
the 1510 is unrelated to your hvac system
we can't read minds over the internet

I appreciate everyone chiming in. I didn’t get any other codes because the shop was busy and they squeezed me in to see if they saw anything obvious. The mechanic didn’t see one amongst the list so he just gave me the one that he thought might be relevant.

I’ll be away for a few days so I will go again when I got back.

I just replaced the HVAC dash control module, and it helped….somewhat. I can hear the actuator change the air flow when I select vent, floor, defrost, and I do feel some intermittent air coming out of the vents. As I stated, the air control works just fine for the rear seats and that is still the case.

I know I’m goin about this backwards so no need to point that out, lol.