Air conditioner problems in cars can be quite common, with many possible causes. Sometimes the problems can be very easy to fix. You can potentially save yourself thousands of dollars by troubleshooting air conditioner problems in your Chevy Avalanche.
Check the temperature controls to make sure they feel right. If they are not working the same as they did before the air conditioning went out, then it is as simple as a fuse problem.
Find the fuse box in a Chevy Avalanche on the passenger side of the center console near the floor. The fuse that controls the air conditioning is number 10. Replace it with one of the replacement fuses available, which are numbers 2 through 5.