2022 Chevrolet Suburban Fluid Type Specifications

Quick Reference

Fluid	Type/Spec	Capacity
Engine Oil	SAE 0W-20, dexos1 Gen2 (or newer), API SP	6.0 - 8.0 quarts (verify in owner's manual for specific engine)
Engine Coolant	DEX-COOL (OAT), Orange/Red	15.0 - 17.0 quarts (verify in owner's manual for specific engine)
Transmission Fluid	DEXRON ULV	11.0 - 13.0 quarts (dependent on transmission type and 2WD/4WD)
Transfer Case	DEXRON ULV	1.5 - 2.0 quarts (dependent on transfer case model)
Front Differential	SAE 75W-90, GM spec 9986165	1.5 - 2.0 quarts (dependent on axle size)
Rear Differential	SAE 75W-90, GM spec 9986165 (with friction mod if G80 LSD)	2.0 - 3.0 quarts (dependent on axle size)
Brake Fluid	DOT 4 (low viscosity recommended)	1.0 - 1.5 quarts (approx. for flush/fill)
Power Steering	Electric Power Steering (No Fluid)	N/A
Washer Fluid	GM Optikleen or equivalent all-season	1 gallon (approx.)
DEF (Diesel)	ISO 22241 (AdBlue equivalent)	5.0 - 7.0 gallons (verify in owner's manual for specific tank size)

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Engine Oil

For the 2022 Chevrolet Suburban, the factory fill engine oil is a synthetic blend or full synthetic SAE 0W-20 viscosity. It must meet GM dexos1 Gen2 specification or a newer generation (Gen3 is backwards compatible and preferred). Furthermore, look for API service category API SP for optimal protection against low-speed pre-ignition (LSPI), chain wear, and improved fuel economy.

Capacity: Engine oil capacity varies slightly depending on your specific engine. The 2022 Suburban offers several engine options, including the 5.3L V8, 6.2L V8, and 3.0L Duramax diesel. Generally, V8 gasoline engines will use between 6.0 and 8.0 quarts. Always consult your owner's manual or OEM service information for the precise capacity for your vehicle's engine code.

Intervals: GM recommends an oil change interval based on the Oil Life Monitoring (OLM) system, which can range from 7,500 to 10,000 miles or 12 months, whichever comes first, under normal driving conditions. Severe duty or frequent towing may shorten this interval. It is crucial to monitor the OLM and perform oil and filter changes when indicated.

Common Pitfalls: Using non-dexos1 approved oil can lead to premature engine wear and may void your powertrain warranty. Never use a different viscosity or spec unless specifically recommended by GM for extreme conditions. Always use a high-quality oil filter that meets or exceeds OEM specifications.

Engine Coolant

The 2022 Chevrolet Suburban utilizes DEX-COOL extended-life coolant, which is an Organic Acid Technology (OAT) formula. This coolant is typically orange or red in color. It is vital to use only DEX-COOL or an officially licensed DEX-COOL compatible coolant to maintain the integrity of your cooling system. Mixing DEX-COOL with conventional (silicate-based) or Hybrid Organic Acid Technology (HOAT) coolants can lead to gel formation, corrosion, and severe damage to the cooling system components.

Capacity: The cooling system capacity for the 2022 Suburban can range from approximately 15.0 to 17.0 quarts, depending on the engine and whether it has auxiliary cooling. Always refer to your owner's manual for the exact capacity.

Intervals: DEX-COOL is designed for long service life, typically 5 years or 150,000 miles, whichever comes first. However, regular inspection of coolant levels and condition is recommended, especially during routine maintenance.

Common Pitfalls: Never mix different types of coolants. Always use distilled water if you are mixing concentrated coolant. Ensure the cooling system is properly bled after any service to prevent air pockets, which can cause overheating.

Transmission Fluid

For the 2022 Chevrolet Suburban, the automatic transmission requires DEXRON ULV (Ultra Low Viscosity) automatic transmission fluid. This is a highly specialized fluid designed for modern GM 10-speed automatic transmissions. Never use DEXRON VI, DEXRON III, or any "universal" ATF, as this can cause severe transmission damage and premature failure. DEXRON ULV is specifically engineered for reduced friction and improved fuel economy in these transmissions.

Capacity: Transmission fluid capacity varies depending on the specific transmission model and whether your Suburban is 2WD or 4WD. A complete drain and fill can require between 11.0 to 13.0 quarts. A pan drop and filter change will require less. Always check your owner's manual or OEM service information for precise figures.

Intervals: GM generally specifies "inspected for life" or 100,000-150,000 miles under normal driving conditions, but recommends more frequent changes (e.g., 45,000 miles) for severe service (towing, heavy-duty use, commercial operation). Many experts recommend a fluid and filter change at 60,000-75,000 miles for optimal longevity.

Common Pitfalls: Using the incorrect type of transmission fluid is the most common and damaging pitfall. Overfilling or underfilling can also cause significant issues. Ensure proper fluid level checks are performed at the correct operating temperature.

Transfer Case Fluid (4WD/AWD Models)

For 2022 Chevrolet Suburban models equipped with 4WD or AWD, the transfer case typically uses DEXRON ULV automatic transmission fluid. This is the same specialized fluid used in the transmission. Confirm this in your owner's manual as some older GM transfer cases used different fluids.

Capacity: Transfer case capacity is generally around 1.5 to 2.0 quarts, depending on the specific transfer case model in your Suburban.

Intervals: GM recommends transfer case fluid changes at 90,000-100,000 miles under normal conditions, or more frequently (e.g., 45,000 miles) for severe service, frequent towing, or off-road use.

Common Pitfalls: Using the wrong fluid type is the primary concern. Always ensure the fill and drain plugs are properly torqued to prevent leaks.

Differential Fluid (Front and Rear)

Both the front and rear differentials in the 2022 Chevrolet Suburban typically specify SAE 75W-90 synthetic gear oil meeting GM specification 9986165. This specification ensures proper lubrication and protection for the gearing.

For the Rear Differential: If your Suburban is equipped with the optional G80 locking rear differential (often indicated by an "G80" RPO code on the service parts identification sticker), it is crucial to use a 75W-90 gear oil that either contains a friction modifier additive or explicitly states it is safe for limited-slip differentials. Many synthetic 75W-90 oils are already formulated with the necessary friction modifiers; however, always verify the product specifications. If not included, a separate GM-approved friction modifier additive must be added to prevent chatter or noise from the locking differential.

Capacity: Differential capacities vary based on axle size. Front differentials usually hold around 1.5 to 2.0 quarts, while rear differentials can hold 2.0 to 3.0 quarts. Always confirm capacities in your owner's manual.

Intervals: Differential fluid changes are generally recommended at 90,000-100,000 miles under normal conditions, or as early as 45,000 miles for severe duty, heavy towing, or off-road operation.

Common Pitfalls: Using conventional gear oil instead of synthetic is a common mistake. For G80 lockers, neglecting the friction modifier can lead to differential chatter, particularly during turns. Ensure breather vents are clear to prevent pressure buildup.

Brake Fluid

The 2022 Chevrolet Suburban uses hydraulic disc brakes, and the brake system requires DOT 4 brake fluid. It is highly recommended to use a low-viscosity DOT 4 fluid for optimal performance, especially in vehicles equipped with advanced braking and stability control systems (ABS, StabiliTrak). While DOT 3 is technically compatible in some older systems, DOT 4 offers a higher dry and wet boiling point, providing a safety margin.

Capacity: A complete brake fluid flush typically requires 1.0 to 1.5 quarts, but having extra on hand is always a good practice.

Intervals: Brake fluid is hygroscopic, meaning it absorbs moisture over time, which lowers its boiling point and can lead to corrosion in the brake system. GM commonly recommends a brake fluid flush every 2 years or 45,000 miles, whichever comes first.

Common Pitfalls: Never mix DOT 3, DOT 4, or DOT 5.1 with DOT 5 fluid. DOT 5 (silicone-based) is incompatible and can cause severe damage. Always use fresh fluid from a sealed container to prevent moisture contamination.

Power Steering Fluid

The 2022 Chevrolet Suburban is equipped with an Electric Power Steering (EPS) system. This means there is no traditional hydraulic power steering pump or fluid reservoir to service. The power assist is delivered entirely by an electric motor.

Common Pitfalls: Do not attempt to add fluid to a non-existent power steering reservoir. If you experience steering issues, it is an electrical or mechanical fault requiring professional diagnosis.

Washer Fluid

For the 2022 Chevrolet Suburban, any high-quality, all-season windshield washer fluid is suitable. GM often recommends using their GM Optikleen washer solvent, but any equivalent product designed to clean windshields and prevent freezing in cold climates will work effectively. Look for formulations that offer bug-removing or de-icing properties based on your local climate.

Capacity: The washer fluid reservoir typically holds about 1 gallon.

Intervals: Fill as needed.

Common Pitfalls: Never use plain water in your washer fluid reservoir, especially in freezing temperatures, as it can freeze and damage the pump or lines. Avoid household cleaners that can damage paint or trim.

Diesel Exhaust Fluid (DEF — for 3.0L Duramax Diesel)

For Chevrolet Suburban models equipped with the 3.0L Duramax diesel engine, Diesel Exhaust Fluid (DEF) is required for the Selective Catalytic Reduction (SCR) system. DEF must meet the ISO 22241 standard, which is globally recognized as "AdBlue" or AUS 32. It is a non-toxic solution of 32.5% high-purity urea and 67.5% deionized water.

Capacity: The DEF tank capacity on the 2022 Suburban Duramax is typically between 5.0 and 7.0 gallons. Always verify the precise capacity in your owner's manual.

Intervals: DEF is consumed continually while the engine is running. The vehicle's instrument cluster will provide warnings when the DEF level is low, indicating it needs to be refilled. Do not allow the DEF tank to run completely dry, as the vehicle's power may be reduced, or it may prevent the engine from starting until refilled.

Common Pitfalls: Never put DEF in the diesel fuel tank, and never put diesel fuel in the DEF tank. Both will cause severe and costly damage. Only use DEF that meets the ISO 22241 standard. Store DEF in a cool, dry place, and do not use expired or contaminated fluid. If DEF freezes, allow it to thaw naturally; do not apply heat.

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