Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2022 GMC Hummer EVFACTORY OEM SERVICE PROCEDURE
Quick Lookups: Fluids
| FLUID CAPACITIES | |||||||
|---|---|---|---|---|---|---|---|
| Fluid Type | Application | Standard | Metric | Fluid Spec | Note | S/H | |
| Air Cond Compressor Oil | 9.01 OZS. | 0.26 L | POE Oil | S | |||
| Air Cond Refrigerant | 3.74 LBS. | 1.69 KG | R-1234yf | This vehicle has a refrigerant charge operational tolerance of .07 kg to + .03 kg / 0.154 lbs to + 0.066 lbs. If refrigerant charge falls outside of this range, please refer to Air Conditioning (A/C) System Performance Test. | S | ||
| Automatic Transmission Fluid | Electronic Drive Transmission (P79),Drain and Refill | 6.32 QTS. | 5.98 L | Automatic Transmission Fluid DEXRON ULV | Approximate capacity. | S | |
| Automatic Transmission Fluid | Electronic Drive Transmission (P79),Dry Fill | 8.05 QTS. | 7.61 L | Automatic Transmission Fluid DEXRON ULV | Approximate capacity. | S | |
| Automatic Transmission Fluid | Electronic Drive Transmission (P80, P8L),Drain and Refill | 2.67 QTS. | 2.52 L | Automatic Transmission Fluid DEXRON ULV | Approximate capacity. | S | |
| Automatic Transmission Fluid | Electronic Drive Transmission (P80, P8L),Dry Fill | 3.85 QTS. | 3.64 L | Automatic Transmission Fluid DEXRON ULV | Approximate capacity. | S | |
| Automatic Transmission Fluid | Electronic Drive Transmission (S8L),Drain and Refill | 2.67 QTS. | 2.52 L | Automatic Transmission Fluid DEXRON ULV | Approximate capacity. | S | |
| Automatic Transmission Fluid | Electronic Drive Transmission (S8L),Dry Fill | 3.85 QTS. | 3.64 L | Automatic Transmission Fluid DEXRON ULV | Approximate capacity. | S | |
| Brake Fluid | 2.78 PTS. | 1.31 L | DOT 4 Motor Vehicle Brake Fluid | S | |||
| Engine Coolant | 21.87 QTS. | 20.69 L | ACDelco Premix 50/50 mixture of de-ionized water and DEX-COOL Coolant | S | |||
| Windshield Washer Fluid | N/A | N/A | Automotive Windshield Washer Fluid that meets regional freeze protection requirements | S | |||
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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