heater control

Hello everyone I a new to this site. I was hoping one of you fellows could help me. With a problem. I have a 2007 Tahoe LTZ 160,000 runs great. But I have noticed that the heater is not working. The blower works but cold air. But the twist is this. It's digital of course. So when I start...

I replaced the battery on our 03 suburban and now the HVAC control unit will not illuminate. None of the switches or controls work. I have checked all the HVAC fuses under the hood and on the LH side of the instrument panel and they all checked good. Hot air exits the dash vents only while...

I have 02 tahoe and it has the heater control with the auto feature. Anyhow if it's set all the way to cold, cold comes out but if I turn it 1 click above cold.... Hot air trickles out. I can't make any type of warm air at all. Need help diagnosing it please.

I have a older model 95 tahoe (02/95). And like so many, I am have problems with the enviroment control unit. I found a new control unit that was listed for a 95'. But apparently sometime in mid 95 they changed the control unit to like the 96 version. It looks the same on the front but the...