How many cans of freon does it take to fill a 1990 gmc vandura van with dual ac?

You can't just fill a car's AC system with a certain number of cans of Freon. The amount needed depends entirely on the *system's capacity*, which varies by vehicle model and year. A 1990 GMC Vandura with dual AC will require significantly more refrigerant than a smaller car with single-zone AC.

You absolutely should not attempt to recharge your AC system yourself without the proper equipment and training. Improperly charging an AC system can damage the compressor and other components, leading to expensive repairs.

To find out how much refrigerant your 1990 GMC Vandura needs, you should:

* Consult your vehicle's owner's manual: It may specify the correct refrigerant type and amount.

* Take it to a qualified AC technician: A professional will have the equipment to evacuate the old refrigerant (important for environmental and safety reasons), determine the correct amount of new refrigerant needed, and recharge the system properly. They'll also be able to identify and fix any leaks in the system.

Trying to guess the amount of refrigerant needed is risky and could lead to significant damage and expense. Professional service is the only safe and reliable way to recharge your AC system.