Hello everyone,
My 2006 H3 A/C went off. I checked the switches behind the glove compartment and they all where working properly i disconnected them and made sure that the switches they went to turned off. I'm not sure if this is something that could be major or a quick do it your self fix. how would I go about checking free-on. I'm new to the Hummer world and i need some direction.

 

a quik chek, open hood, if the compressor is not kicking in it may need freon ?. auto stores can chek or advise.
otherwise buy a refill kit with a gage,its cheap, good to have, it will tell you a lot, or,,,

 

There are a lot of people that can evacuate and refill the freon. It's best to leave it up to them. Usually, it costs anywhere from $50-75 to have all that done. Evacuating the system and having a vacuum put on the system can check for leaks. It also ensures that the right amount of freon is put back in. You can get a lot of answers for not a whole lot of money.