Ac


#1

My sons Cheverlot Avalanche sat for a long time while he is in IRAQ, I took it for a drive and now it has no AC, before it was parked it had very good AC, any ideas?


#2

What year vehicle? How many miles? Have you checked to see if the compressor is engaging?

If the vehicle is 6 years or whatever old it’s possible that enough refrigerant charge has been lost and this is preventing the low side pressure switch from closing and activating the compressor.


#3

The system is probably just low on Refrigerant. I’m no expert, but you should be able to hear and even feel the compressor engage when you turn on the a/c. If it is cooling poorly then the system more than likely has a low Freon charge and you should have it recharged by a competant mechanic. Just don’t tell the shop that the truck is low on COOLANT, like my father did. Oops. Good luck.