Excessive airflow through vents

[randyfaz]

All,
I have a 2007 Tahoe LTZ with about 22k miles.

I was wondering if anyone has the same issue as below.

I’ve noticed lately when driving at highways speeds 65-70 with the air conditioning on and the fan speed on 1. The air flowing through the vents is very strong.
To compare, I’ve raised the fan speed to level 4-5 before I notice a difference in the airflow.

I took it back to my dealer and they could not recreate it….. Not happy with them anyway.

I could not get any error codes either.

Has anyone else encountered this and if so what was the resolution.

Thanks in advance
Randy

 

[JAGastrock]

Thats a chevy quirk. ITs just collecting air from outside and forcing it inside. If you put it on recirculate it wont do that.

 

[Black Dog]

Yeah, think of it like forced induction, the higher the outside pressure the faster it's gonna force into the car.