2022 Chevrolet Equinox — A/C Refrigerant & PAG Oil Specs

Quick answer

• Refrigerant: R-1234yf (factory fill)
• Full system charge: Most 2022 Equinox models specify about 19.4 oz (≈550 g) of R‑1234yf. Always confirm on the under‑hood A/C specification label; slight variation by trim/market may list ≈540–570 g.
• PAG oil: PAG 46. Total system oil capacity is approximately 4.1 oz (≈120 mL). Add oil by component when parts are replaced per GM service info rather than dumping the full amount.
• Service port locations: Low‑side port on the larger‑diameter suction line near the passenger‑side firewall/strut tower. High‑side port on the smaller‑diameter discharge line near the condenser/radiator support at the front (typically passenger side).

Why R-1234yf matters

Starting in the mid‑2010s, automakers transitioned from R‑134a to low‑GWP R‑1234yf. The 2022 Chevrolet Equinox uses R‑1234yf from the factory. That matters for:

• Cost and availability: R‑1234yf refrigerant is significantly more expensive than R‑134a. Expect higher material costs for service.
• Equipment requirements: By EPA rule, recover/recycle/recharge (RRR) machines must be specifically rated for R‑1234yf. R‑134a machines cannot be used.
• Regulatory compliance: Venting refrigerant is illegal. Section 609 certification is required to service MVAC systems. R‑1234yf is mildly flammable (A2L), so proper procedures and equipment are important.
• No retrofitting: Do not convert a yf system to R‑134a. The fittings, label, oil chemistry, and calibration are all designed for yf. Use only R‑1234yf and compatible PAG oil and O‑rings (HNBR).

Recharge procedure (high-level)

Charging by pressure or “topping off” is not recommended. The Equinox’s variable displacement compressor and expansion device are calibrated for a precise refrigerant mass. Overcharge or undercharge can reduce performance and damage the compressor.

1. Identify and verify specs

• Read the under‑hood A/C label for the exact R‑1234yf charge (generally ~550 g) and confirm oil type (PAG 46). Note that GM often includes UV dye from the factory—use a UV lamp for leak checks.

2. Connect certified equipment

• Use an R‑1234yf‑approved RRR machine and manifold set with yf quick‑connect couplers. Verify both service ports are clean and caps are present and sealing.

3. Recover and measure

• Recover the existing refrigerant to determine what mass came out. If there is little or no charge, plan on a thorough leak diagnosis before recharging.

4. Evacuate (vacuum)

• Replace any leaking components and O‑rings as needed. Pull a deep vacuum (typically 30–45 minutes) until the system holds below 500 microns and passes a decay test. Moisture removal protects the compressor and desiccant.

5. Charge by weight

• Charge the exact mass of R‑1234yf specified on the label using the machine’s scale. Do not charge by can count or pressure. Add only the oil amount appropriate to the service performed (e.g., after replacing a compressor, condenser, or evaporator) per GM service procedures.

6. Verify operation

• With the engine running and A/C on MAX, confirm condenser fan operation, vent temps, line temperatures, and that the high‑ and low‑side pressures track normally for ambient conditions. Clear any HVAC DTCs and run actuator recalibrations if needed through a scan tool.

Safety note: MVAC work requires EPA Section 609 certification. R‑1234yf is A2L (mildly flammable); keep ignition sources away and follow OEM procedures.

Common A/C problems for this vehicle

• Refrigerant leaks: Stone impacts or corrosion can damage the front‑mounted condenser. Service port core and O‑ring seepage are also common leak points. Factory UV dye helps locate small leaks at fittings, evaporator drain, and condenser seams.
• Variable compressor control issues: The Equinox uses a variable displacement compressor with a control solenoid. Low charge, debris, or control valve faults can cause weak cooling at idle or intermittent performance.
• Cooling fan or airflow faults: Inoperative condenser/radiator fan(s), debris in the condenser fins, or bent fins raise head pressure and reduce cooling, especially at a stop.
• Evaporator core leaks: Less common, but a sweet/chemical odor from vents, oily residue at the case drain, and a slow loss of charge suggest an internal core leak.
• Cabin air filter/door actuator concerns: A clogged filter or blend/recirculation door faults can mimic A/C problems with warm or inconsistent outlet temps.

OEM service info and tips

• Capacity authority: The under‑hood label is the final word for refrigerant mass and oil notes. Use GM Service Information (SI) for component‑specific oil add‑back amounts and tightening torques.
• Oil specifics: Use PAG 46 compatible with R‑1234yf systems. Total system capacity is approximately 120 mL; do not add the full amount unless the system has been flushed and is dry. Add measured oil based on the component replaced per GM SI.
• Parts and seals: Use HNBR O‑rings rated for R‑1234yf. Replace the receiver‑drier (integrated in the condenser on many models) when the system has been open or after a major leak.
• Calibration and DTCs: After HVAC work, check for codes and run actuator recalibration with a capable scan tool to ensure proper air distribution and temperature control.

When to call a pro

Call a certified A/C technician if you don’t have yf‑rated recovery equipment, can’t pull and hold vacuum, suspect an evaporator leak, or see abnormal pressure behavior. Professional shops have nitrogen/trace gas leak detection, electronic sniffers for yf, scan tools for HVAC modules, and the correct R‑1234yf RRR machines to charge the system accurately.

Disclaimer: Servicing mobile A/C systems requires EPA Section 609 certification. Follow all safety and environmental regulations. Do not vent refrigerant.

Find a certified A/C shop on Repairius.