Front Ac not blowing cold

[nkostop]

I have a 99 Yukon Denali and my front vents are not blowing cold for some reason. The rear ac is blowing ice cold. I know this is a common problem but I can't find a straight answer. Any feedback is appreciated.

 

[SunlitComet]

If, while the back is blowing cold, the front is blowing warm air then it is likely that the orifice valve for the the front system is plugged.

 

[nkostop]

Any idea where it's located, I assume somewhere new the blower?

 

[SunlitComet]

between condenser and the evaporator in the refrigerant line. you will need to discharge and the system to get it replaced.

 

[mattss90]

Rather than start a new thread, maybe this can be answered here.

I have a 2 door, so I only have front AC vents. The air blows cold but It can take 10-15 for it to really start blowing cold. What could this be from? Is the pump going bad, need a recharge, or just plain old technology?

 

[SunlitComet]

you need a gauge set to obtain pressure reading to be exactly sure. If pressure takes that long to build up then the compressor is gone. But low refrigerant can cause problems too. get a gauge set, set it up video it with audio cues of when you hvac buttons while filming the gauge set.