2020 Chevrolet Silverado 2500HD A/C Refrigerant and Oil Guide

Quick answer

• Refrigerant type: R-1234yf
• Full system charge: 28.2 oz (800g)
• PAG oil type: PAG 46
• PAG oil amount: 6.8 oz (200mL)
• Low-side service port location: Near the firewall on the passenger side
• High-side service port location: Near the radiator on the passenger side

Why R-1234yf matters

The 2020 Chevrolet Silverado 2500HD uses R-1234yf refrigerant, which has a lower global warming potential (GWP) than the R-134a used in older vehicles. This change was made to comply with Environmental Protection Agency (EPA) regulations. While R-1234yf is better for the environment, it is also more expensive and requires special equipment for service. You cannot use an R-134a recovery machine with an R-1234yf system, and vice versa. Using the wrong refrigerant or oil can damage your A/C system, so it is important to use the correct type.

Recharge procedure

A full A/C system recharge should only be performed by a qualified technician. The system must be evacuated with a vacuum pump to remove any air or moisture before it is recharged. The correct amount of refrigerant must be added by weight, not by pressure. Overcharging or undercharging the system can cause damage to the compressor and other components.

Common A/C problems for this vehicle

Some common A/C problems for the 2020 Chevrolet Silverado 2500HD include:

• Compressor failures: The A/C compressor is a common failure point on these trucks. The compressor can fail due to a variety of factors, including a lack of lubrication, a refrigerant leak, or a clogged orifice tube.
• Condenser issues: The A/C condenser is located in front of the radiator and is susceptible to damage from road debris. A damaged condenser can leak refrigerant and cause the A/C system to fail.
• Evaporator leaks: The A/C evaporator is located inside the dashboard and can be difficult to access. An evaporator leak can cause a loss of refrigerant and a decrease in cooling performance.

When to call a pro

If you are experiencing any problems with your A/C system, it is best to have it diagnosed and repaired by a qualified technician. A professional will have the proper tools and equipment to safely and effectively service your A/C system. They will also be able to properly diagnose the problem and recommend the best course of action.

Disclaimer: The information in this article is for general informational purposes only and is not a substitute for professional advice. Always consult with a qualified technician before servicing your A/C system. You must be EPA 609 certified to legally purchase and handle refrigerants.

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