2024 Chevrolet Suburban Fluid Type Specs

Quick Reference

Fluid	Type/Spec	Capacity (approximate)
Engine Oil	SAE 0W-20 (5.3L V8 & 6.2L V8) / SAE 5W-30 (3.0L Duramax)	8.0 quarts (5.3L/6.2L) / 7.0 quarts (3.0L)
Engine Coolant	DEX-COOL Antifreeze/Coolant (GM Spec GM6277M)	16.9 quarts (5.3L/6.2L) / 10.9 quarts (3.0L)
Transmission Fluid	DEXRON ULV (GM Spec GMW16226)	10-13 quarts (verify in owner's manual)
Transfer Case	DEXRON ULV (GM Spec GMW16226)	2.0 quarts
Front Differential	SAE 75W-90, Synthetic Gear Lubricant (GM Spec 9986115)	1.7 quarts
Rear Differential	SAE 75W-90, Synthetic Gear Lubricant (GM Spec 9986115); if Electronic Limited-Slip Differential (eLSD), GM Spec 9986114 with Friction Modifier	2.5 quarts (verify in owner's manual)
Brake Fluid	DOT 4 Low Viscosity (GM Spec 9986196)	As needed
Power Steering	Electro-hydraulic system; inspect fluid level via reservoir (no user-serviceable fluid)	-
Washer Fluid	General Purpose Washer Fluid	1 gallon (approx.)
DEF (Diesel Exhaust Fluid)	ISO 22241 (API CK-4 compatible)	7.0 gallons

Engine Oil

For the 2024 Chevrolet Suburban, proper engine oil is crucial for the longevity and performance of your engine. Both the 5.3L and 6.2L V8 gasoline engines require SAE 0W-20 engine oil meeting the dexos1 Gen3 specification. The 3.0L Duramax turbo-diesel engine requires SAE 5W-30 engine oil meeting the dexosD specification. Always look for the official dexos logo on the oil container. Using oil that does not meet the specified dexos standard can lead to premature engine wear and may void your warranty.

Intervals: The Engine Oil Life System (OLS) in your Suburban will monitor driving conditions and determine when an oil change is necessary. Typically, this can range from 7,500 to 10,000 miles or 12 months, whichever comes first. It is always best to follow the OLS indicator, but frequent checks of the oil level are recommended between changes.

Common Pitfalls: Never use conventional oil or oil that does not carry the official dexos certification. Mixing different oil viscosities or types can reduce the effectiveness of the lubrication and protective additives. Ensure the correct dexos specification (dexos1 Gen3 for gasoline, dexosD for diesel) is used for your specific engine.

Engine Coolant

The 2024 Chevrolet Suburban uses a long-life, extended-life coolant known as DEX-COOL Antifreeze/Coolant. This is an Organic Acid Technology (OAT) coolant and is typically orange or pink in color. It must meet GM Specification GM6277M.

Intervals: DEX-COOL is designed for extended service intervals, typically lasting up to 5 years or 150,000 miles, whichever comes first. However, regular inspection of coolant levels and condition is recommended.

Common Pitfalls: Never mix DEX-COOL with conventional green or yellow coolants, which are typically Inorganic Acid Technology (IAT) or Hybrid Organic Acid Technology (HOAT). Mixing these types can lead to chemical incompatibilities, gelling, corrosion, and severe engine damage. Always use distilled water if mixing with concentrated coolant, never tap water.

Transmission Fluid

The 2024 Chevrolet Suburban utilizes the latest generation of automatic transmission fluid, DEXRON ULV (Ultra Low Viscosity). This fluid is specifically engineered for the advanced automatic transmissions found in your vehicle and must meet GM Specification GMW16226. Do not use any other type of DEXRON fluid (e.g., DEXRON VI) as it is not compatible with the ULV specification.

Intervals: Transmission fluid service intervals can vary greatly depending on driving conditions, especially if towing or frequently driving in hot climates. Consult your owner's manual or OEM service information for specific recommendations. Generally, a fluid and filter change may be recommended between 45,000 to 90,000 miles for severe duty, or longer for normal driving.

Common Pitfalls: Using incorrect transmission fluid can lead to severe transmission damage, erratic shifting, and premature wear. Universal ATF products should be avoided. Always use DEXRON ULV meeting GM Spec GMW16226.

Transfer Case Fluid

For four-wheel-drive and all-wheel-drive models of the 2024 Chevrolet Suburban, the transfer case requires DEXRON ULV fluid, the same as the automatic transmission. This fluid must meet GM Specification GMW16226.

Intervals: Transfer case fluid should typically be inspected and potentially changed every 45,000 to 90,000 miles, especially if the vehicle is frequently used in demanding conditions (e.g., towing, off-roading).

Common Pitfalls: As with the transmission, using any fluid other than DEXRON ULV meeting GM Spec GMW16226 can cause extensive damage to the transfer case components.

Differential Fluid (Front and Rear)

Both the front and rear differentials in the 2024 Chevrolet Suburban require SAE 75W-90 Synthetic Gear Lubricant meeting GM Specification 9986115.

For models equipped with an Electronic Limited-Slip Differential (eLSD) in the rear, a specific fluid is required to ensure proper operation: GM eLSD Fluid meeting GM Specification 9986114 which contains the necessary friction modifiers. It is crucial to verify if your vehicle has an eLSD, as using the wrong fluid can impair its function and longevity.

Intervals: Differential fluid change intervals can range from 45,000 to 90,000 miles depending on usage. Heavy towing, off-roading, or frequent short trips in extreme temperatures may necessitate earlier changes.

Common Pitfalls: Using conventional gear oil instead of synthetic can reduce component life. For eLSD-equipped vehicles, omitting the correct friction modifier or using a standard gear oil can cause chatter and malfunction of the limited-slip mechanism.

Brake Fluid

The 2024 Chevrolet Suburban requires DOT 4 Low Viscosity (LV) brake fluid. This fluid must meet GM Specification 9986196 (often referred to as GM/Opel specific). Do not use DOT 3 or DOT 5.1 brake fluids interchangeably without verifying compatibility, though DOT 4 LV is generally backward compatible with DOT 3, the LV aspect is critical for modern ABS/ESC systems.

Intervals: Brake fluid is hygroscopic, meaning it absorbs moisture over time, which reduces its boiling point and can lead to corrosion. GM typically recommends brake fluid replacement every 2 years or 30,000 miles, but always refer to your owner's manual.

Common Pitfalls: Using DOT 5 (silicone-based) brake fluid is strictly prohibited as it is not compatible with the braking system and can cause seal damage. Ensure the fluid is fresh from a sealed container, as opened containers can absorb moisture from the air.

Power Steering Fluid

The 2024 Chevrolet Suburban utilizes an electric power steering system or an electro-hydraulic power steering system depending on the exact configuration. For systems with a fluid reservoir, the fluid is not typically a user-serviceable item for topping off or changing. Consult your dealer or a qualified technician if you suspect a power steering fluid issue.

Intervals: Generally, the power steering fluid in these systems is considered "fill for life" unless a component needs replacement or repair.

Common Pitfalls: Attempting to add fluid to a sealed electric system can cause damage. If you have an electro-hydraulic system, ensure any fluid added meets the very specific manufacturer requirements to avoid damage to pumps and seals.

Washer Fluid

Any general-purpose automotive windshield washer fluid is suitable for the 2024 Chevrolet Suburban. For cold climates, ensure the fluid contains antifreeze properties to prevent freezing.

Intervals: Top off as needed.

Common Pitfalls: Do not use plain water, especially in freezing temperatures, as it can freeze and damage the washer fluid reservoir or pump. Avoid using household cleaners, which can damage paint or plastic components.

Diesel Exhaust Fluid (DEF)

For 3.0L Duramax diesel models, Diesel Exhaust Fluid (DEF) is essential for the Selective Catalytic Reduction (SCR) system to reduce NOx emissions. DEF must meet ISO 22241 standards. It is also often referred to as urea and is compatible with engines requiring API CK-4 diesel engine oil (though DEF is not oil).

Intervals: The DEF tank capacity is approximately 7.0 gallons. The vehicle's instrument cluster will provide warnings when the DEF level is low. Always ensure you refill with a fresh bottle from a reputable source.

Common Pitfalls: Never put DEF in the diesel fuel tank, and never put diesel fuel in the DEF tank. Either mistake will cause severe damage to the respective systems. DEF has a shelf life; always check the expiration date on the container. Store DEF in a cool, dry place away from direct sunlight.

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