i have a
2004 Tahoe Z71 with 135,000 miles and the manual slide AC/heat controls. I have the AC on and everything blows out normal driving down the road but then the out put from the vents gets slower, like I were to turn the setting down but I haven't touched anything. When I turn it down to say #1 setting it barely blows out any AC at all. Any thoughts? Other issue is driving it is cold but when it comes to a stop for any amount of time it slowly starts to get warmer, any thought? I was thinking either the Freon was low or there is an issue with the blower resistor. The rear AC blows out air but is not cold. Figured I would post here since there was no response on interior.