First off, it does not contain Freon. Freon is R12 and your Hummer contains R134a which is not Freon. This is not a DIY job. If it is low of refrigerant then it has a leak, and it is illegal to add refrigerant without repairing the leak. I suggest you take the vehicle to a professional that has the expertise and special tools to accomplish this repair.
The Chevrolet suburban air conditioning compressor fluid capacity is dependent upon the year of the automobile. In general, the air conditioning system will hold approximately 6 pounds of Freon.
The 1993 Chevrolet suburban C 1500 5.7 liter engine air conditioning system has a Freon capacity of five pounds. The Freon capacity should never be exceeded.
The freon capacity for a 2000 Mercedes S430 is about 29 ounces. The 29 ounces would only be used if the system was completely empty.
It can damage the compressor.
The compressor.
1lb.14ounces of freon 134 and 3 ounces of ester oil
You should not put any oil in a Ford air conditioning compressor. The air conditioning compressor runs on Freon. The system should take about one pound of Freon.
You should find a sticker under the hood, in the engine compartment that gives you that information.
that depends on what is wrong have you checked the compressor?
Oil capacity for the complete system is 8 ounces. The breakdown is 2 oz. in the compressor(or the exact amount you remove from same. The evaporator core holds 3 oz. , the condensor core holds 1 oz. and the accumulator holds 2 oz.
If the compressor will not come on at all, it is not because the system needs charging. Check for a blown fuse, disconnected wire at the compressor, or a defective compressor clutch.
You will need to remove all of the Freon from your air conditioning system. Remove the air conditioning hoses. Remove the compressor belt. Remove the compressor retaining bolts. Reverse the process to install the new air conditioner compressor.