What type of refrigerant is used in a 1994 chevrolet astro van?

The 1994 Chevrolet Astro Van uses R-134a refrigerant for its air conditioning system. This refrigerant was introduced as a more environmentally friendly alternative to R-12, which was phased out due to its ozone-depleting properties. If you're servicing the AC system, it's important to ensure compatibility with R-134a and use the correct oil type as well.