yes there is a seal on the front of compressor that can go bad and leak freon.
Answer freon install 1991 Chevythe low side is the big tubing high is small you should look for a siver canaster about the size of a thermus it will have a connection for low pressure to insert freon into system
Buy a kit at Wal-Mart or auto parts comes with instructions
You need to identify the exact model of van. In 2004, GMC manufactured and marketed the Safari minivan, as well as the full sized Vandura.
GMC safari has twoconverters
where do you put freon in on a 2000 gmc jimmy
Blue port. If you have the rear air then the charge will be greater than front air only.
If that is all that you want to do then just add it on the low side service port that is located on the a/c accumulator...................
Add it to the low presser side. It will be located on the evaporator on the fire wall on the passenger side of vehicle.
The 1996 Suburban uses r134 Freon. The fittings to add Freon are different sizes on r12 and r134, making it impossible to add the wrong type to your vehicle.
How to remove pentium cover on a 2000 gmc safari
Where do I fill the transmission fluid gmc Safari van?