* Year of the truck: The size of the AC system and therefore the refrigerant charge changed over the years.
* Specific AC system components: Different compressors, condensers, and evaporators have different capacities.
* Body style: A longer wheelbase model might have a slightly larger system.
To find out how much refrigerant is *supposed* to be in your specific Chevy 3500, you'll need to:
* Consult your owner's manual: This is the best source of information. The manual should specify the correct refrigerant type and charge amount.
* Check the sticker on the AC unit: Sometimes there's a sticker on the AC components indicating the correct charge.
* Consult a repair manual for your specific year and model: Repair manuals often provide this detail.
* Ask a qualified AC technician: A technician can accurately measure and determine the correct refrigerant charge for your vehicle.
Attempting to add refrigerant without knowing the proper amount is strongly discouraged. Overcharging can damage the AC system. Always have a professional handle refrigerant handling and charging.
