2022 GMC Yukon Fluid Type Specs

Quick Reference

Fluid	Type/Spec	Capacity
Engine Oil	SAE 0W-20, dexos1 Gen2 (or newer) GM B 040 2095	8 quarts (6.2L V8), 7 quarts (5.3L V8)
Engine Coolant	DEX-COOL Antifreeze/Coolant; GM 6277M (Orange/Pink HOAT)	16.5-17.5 quarts (Varies with engine/configuration)
Transmission Fluid	DEXRON ULV Automatic Transmission Fluid; GM 9986370	10-14 quarts (Service fill varies)
Transfer Case	AutoTrak II, DEXRON HP (GM 88861950) or equivalent	Approx. 1.6-2.0 quarts
Front Differential	SAE 75W-90 Synthetic Axle Lubricant; GM 9986115	Approx. 1.7-1.8 quarts
Rear Differential	SAE 75W-90 Synthetic Axle Lubricant; GM 9986115 (with friction modifier if G80 LSD)	Approx. 2.0-2.5 quarts
Brake Fluid	DOT 3 or DOT 4 (synthetic recommended)	As needed
Power Steering	Electric Power Steering - No fluid	N/A
Windshield Washer Fluid	All-season windshield washer solvent	As needed

Engine Oil

For the 2022 GMC Yukon, the recommended engine oil is SAE 0W-20. It is crucial to use oil that meets or exceeds the dexos1 Gen2 specification (GM B 040 2095), though newer generations (dexos1 Gen3) are backward compatible and often preferred due to enhanced protection. This specification ensures optimal fuel economy and engine protection, especially for vehicles equipped with gasoline direct injection and turbochargers (if applicable to your specific engine option). Always look for the official dexos1 licensed mark on the oil bottle.

Capacity:

• 6.2L V8 Engine: Approximately 8 quarts (7.6 liters)
• 5.3L V8 Engine: Approximately 7 quarts (6.6 liters)

Intervals and Pitfalls: GM recommends an oil and filter change when the Oil Life Monitoring (OLM) system indicates, typically between 7,500 and 10,000 miles under normal driving conditions, or at least once a year, whichever comes first. Refer to your owner's manual for specific OLM instructions. Using an incorrect oil type or specification can lead to premature engine wear, reduced fuel efficiency, and may void your powertrain warranty. Never use conventional oil if synthetic is specified.

Engine Coolant

Your 2022 GMC Yukon requires DEX-COOL Antifreeze/Coolant, specifically a long-life, silicate-free, phosphate-free, nitrite-free, and borate-free Organic Acid Technology (OAT) coolant. It is typically orange or pink in color and meets GM 6277M specification. DEX-COOL is designed for extended service intervals and provides excellent corrosion protection for aluminum and other engine components.

Capacity: The cooling system capacity can vary slightly depending on the exact engine and trim level, typically ranging from 16.5 to 17.5 quarts (15.6 - 16.5 liters).

Intervals and Pitfalls: DEX-COOL coolant is designed for a service life often extending to 5 years or 150,000 miles, whichever comes first. However, regular inspection of coolant levels and condition is always recommended. Crucially, never mix DEX-COOL with other types of coolant (e.g., traditional green IAT or hybrid HOAT coolants). Mixing different coolant types can lead to chemical reactions that form precipitates, clog the cooling system, reduce cooling efficiency, and cause severe engine damage. Always flush the system thoroughly if changing coolant types, though staying with DEX-COOL is strongly advised.

Transmission Fluid

For the 2022 GMC Yukon's automatic transmission, the specified fluid is DEXRON ULV Automatic Transmission Fluid, which meets GM 9986370 specification. ULV stands for Ultra Low Viscosity, and this fluid is specially formulated for the performance and durability requirements of GM's latest generation transmissions, including the 10-speed automatic found in many Yukons.

Capacity: The transmission fluid capacity for a drain and fill can vary significantly, usually between 10 to 14 quarts (9.5-13.2 liters) for a complete service, including torque converter and cooler lines. Always refer to a service manual for precise capacity during a fluid change.

Intervals and Pitfalls: GM generally considers the transmission fluid to be "lifetime" fill under normal operating conditions. However, for vehicles that tow frequently, operate in extreme temperatures, or experience heavy-duty use, an earlier fluid and filter change (e.g., around 45,000 to 90,000 miles) is highly recommended. Never use generic "universal" ATF or a fluid that does not explicitly state it meets the DEXRON ULV specification. Using an incorrect fluid can lead to transmission shudder, poor shift quality, overheating, and ultimately, catastrophic transmission failure.

Transfer Case

If your 2022 GMC Yukon is equipped with 4WD or AWD, it will have a transfer case. The recommended fluid is AutoTrak II, which meets GM 88861950 (DEXRON HP) or an equivalent specification. This fluid is specifically designed for GM's electronically controlled transfer cases and ensures smooth operation and proper engagement of the 4WD system.

Capacity: The transfer case typically holds approximately 1.6 to 2.0 quarts (1.5 - 1.9 liters) of fluid.

Intervals and Pitfalls: Transfer case fluid should typically be inspected and potentially changed around 97,500 miles under normal driving conditions, or more frequently for vehicles regularly used for towing or off-road driving (e.g., every 45,000 to 50,000 miles). Using an incorrect fluid type in the transfer case can lead to grinding noises, difficulty shifting between drive modes, and premature wear of internal components.

Front and Rear Differentials

Both the front and rear differentials in the 2022 GMC Yukon require SAE 75W-90 Synthetic Axle Lubricant that meets GM 9986115 specification. This full synthetic gear oil provides excellent wear protection and thermal stability, crucial for the long life of your differential gears.

Capacity:

• Front Differential: Approximately 1.7 to 1.8 quarts (1.6 - 1.7 liters).
• Rear Differential: Approximately 2.0 to 2.5 quarts (1.9 - 2.4 liters). Note: If your Yukon is equipped with the optional G80 locking rear differential, it does NOT require a separate friction modifier additive. The specified GM 9986115 fluid is formulated for this application. However, if using an aftermarket 75W-90 synthetic gear oil, always verify its suitability for limited-slip differentials. Many aftermarket 75W-90 synthetics designed for domestic truck applications include the necessary friction modifiers already.

Intervals and Pitfalls: Differential fluid changes are generally recommended at 97,500 miles for normal use. For heavy towing or off-road use, it's advisable to shorten this interval to around 45,000 to 50,000 miles. Using conventional gear oil instead of synthetic, or an incorrect viscosity, can lead to increased friction, overheating, and accelerated wear of the differential gears. Always ensure the fill level is correct to prevent cavitation or inadequate lubrication.

Brake Fluid

Your 2022 GMC Yukon uses DOT 3 or DOT 4 brake fluid. While DOT 3 is commonly specified, DOT 4 fluid is generally recommended due to its higher dry and wet boiling points, offering better performance and resistance to fluid fade during heavy braking or prolonged use. Synthetic brake fluid is also an excellent upgrade for improved longevity and performance. Never use DOT 5 silicone-based fluid, as it is incompatible with conventional brake systems.

Capacity: As needed to fill the brake fluid reservoir. No specific capacity is given as it's a closed system.

Intervals and Pitfalls: Brake fluid is hygroscopic, meaning it absorbs moisture over time, which lowers its boiling point and can lead to corrosion in the brake system. It's generally recommended to inspect the brake fluid condition annually and consider a flush and replacement every 2 to 3 years, or approximately every 30,000 to 45,000 miles, regardless of fluid appearance. Using contaminated or incorrect brake fluid can lead to spongy brakes, reduced braking efficiency, and damage to ABS components and brake calipers.

Power Steering Fluid

The 2022 GMC Yukon utilizes an Electric Power Steering (EPS) system. This means there is no hydraulic power steering fluid to check or change. The system is electronically controlled, simplifying maintenance and improving fuel efficiency.

Windshield Washer Fluid

Any readily available all-season windshield washer solvent is suitable for your 2022 GMC Yukon. For regions experiencing cold weather, ensure the fluid has adequate freeze protection to prevent it from freezing in the reservoir and lines. Some premium washer fluids also offer bug removal properties or water repellency.

Diesel Exhaust Fluid (DEF) - For Diesel Models

If your 2022 GMC Yukon is equipped with the optional 3.0L Duramax Turbo-Diesel engine, it will require Diesel Exhaust Fluid (DEF) for its Selective Catalytic Reduction (SCR) system. The DEF used must meet ISO 22241 (Aqueous Urea Solution AUS 32) standards. Always purchase DEF from reputable sources to ensure quality and purity.

Capacity: The DEF tank capacity is approximately 7.0 gallons (26.5 liters).

Intervals and Pitfalls: DEF consumption varies with driving conditions, load, and ambient temperature. Your vehicle's information system will provide warnings when DEF levels are low. Running out of DEF will eventually limit engine power and prevent engine restarts until the tank is refilled. Never put diesel fuel in the DEF tank or DEF in the diesel fuel tank. This will cause severe damage to the respective systems. Store DEF in a cool, dry place away from direct sunlight, and avoid using DEF that has expired or developed crystals, as this can damage the SCR system. Always use a dedicated, clean dispenser when refilling.

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