So I went off roading at Silver Lake sand dunes... We ran the A/C every now and then, it was working great.. I never got air under the wheels but We hit some pretty rough sand whoops. Did I break a line? Crack a major part of the system? I put a shot of green dye in the system and half a can of Arctic Air and that got the compressor cycling... the air coming out of the vents feels wet, not cold and dehimidified like it should. There is NO water puddle anywhere while idling, that is odd...

The front mounted condensor has a wetness on the passrnger side, possibly cracked? Should that EVER be wet externally? The top/low pressure line is cold while the system cycles.

Looking for a diagram of the system and its parts.. Thanks

 

If it is wet on a dry day, then it appears to be the condenser. Do you have goggles and a uv light?

 

I think I have the goggles still from years back..

 

You need to put some AC gauges on it to get some readings but if you did fill it up and now it works..I think condenser is damaged.

 

We do not need to be digging up 4 YEAR OLD threads to make suggestions to people who are no longer here. Please avoid necrobumping.
https://www.hummerforums.com/forum/n...bumping-23220/

 

My AC problem was a bad expansion valve. My pressures were all perfect and a dealer told me expansion valve. I installed the $50 part myself and had a local shop recharge it for $65. Problem solved. Dealer quoted well over $600 if I remember right..