2024 Chevrolet Suburban A/C Refrigerant & Oil Capacity

Quick Answer

• Refrigerant Type: R-1234yf
• Full System Charge: 22 oz (624 grams)
• PAG Oil Type: PAG 46
• PAG Oil Amount: 6.0 oz (180 mL)
• Low-Side Service Port Location: On the accumulator/dryer, typically located near the firewall on the passenger side of the engine bay.
• High-Side Service Port Location: On the A/C line running from the condenser, generally closer to the front of the vehicle near the radiator.

Why R-1234yf Matters

For your 2024 Chevrolet Suburban, the A/C system uses R-1234yf refrigerant. If you own an older vehicle, you might be familiar with R-134a. The transition to R-1234yf, which largely began around 2014 for many automakers, was driven by environmental concerns. R-1234yf has a much lower Global Warming Potential (GWP) compared to R-134a, making it a more eco-friendly choice. This shift has several implications for vehicle owners:

• Cost: R-1234yf is significantly more expensive than R-134a, both for the refrigerant itself and the equipment required to service it.
• EPA Regulations: Due to its environmental impact, the handling of R-1234yf is subject to strict EPA regulations. Only EPA 609 certified technicians are legally allowed to purchase and work with this refrigerant.
• Specialized Recovery Machines: Servicing an R-1234yf system requires specialized and often expensive recovery and recharge equipment. This equipment is designed to prevent refrigerant leaks during service and ensure accurate charging.

Recharge Procedure

Recharging your Suburban's A/C system is not as simple as just adding a can of refrigerant. It's a precise process that requires specialized tools and knowledge. Always remember that proper A/C system service requires evacuation and charging by weight, not by pressure. Trusting pressure readings alone can lead to overcharging or undercharging, both of which can damage your A/C system and reduce its efficiency.

Here's a high-level overview of the professional recharge procedure:

1. Evacuation: The system is first evacuated using a vacuum pump to remove any air and moisture. Moisture in an A/C system can create corrosive acids and lead to component failure.
2. Leak Test: After evacuation, the system should hold a vacuum, indicating no significant leaks. If it doesn