2017 Chevrolet Suburban Complete Fluid Specifications & Capacities

As an ASE-certified master technician, I’ve serviced countless K2XX-generation GM SUVs. The 2017 Chevrolet Suburban is an iconic family hauler and tow rig, generally equipped with the reliable 5.3L L83 EcoTec3 V8 engine. To keep these massive vehicles running to 200,000 miles and beyond, strict adherence to factory fluid specifications and service intervals is non-negotiable. Using the wrong transmission fluid or mixing coolants can lead to catastrophic component failure.

Below is your complete guide to the fluid types, OEM specifications, and capacities for the 2017 Chevrolet Suburban.

Quick reference

Note: Capacities are approximate. Always verify the correct fluid level using the dipstick, check plug, or level indicator as specified by GM service information. For models with auxiliary rear heating, coolant capacity is higher.

Fluid	Type/Spec	Capacity
Engine Oil (5.3L V8)	0W-20 Full Synthetic (dexos1™ Gen3)	8.0 quarts (7.6 L) w/ filter
Engine Coolant	Dex-Cool® OAT (Orange) GM 6277M	16.7 - 17.5 quarts (15.8 - 16.6 L)
Transmission (6-speed)	DEXRON®-VI ATF	6.0 qt (Pan drop) / 12.4 qt (Total)
Transfer Case (4WD)	Auto-Trak II Fluid (GM 88900402)	1.6 quarts (1.5 L)
Front Differential (4WD)	75W-90 Synthetic Gear Lube	1.5 quarts (1.4 L)
Rear Differential	75W-85 Synthetic (GM 19300457)	2.8 quarts (2.6 L)
Brake Fluid	DOT 3 Hydraulic Brake Fluid	As needed (approx. 1.0 - 1.5 qt for flush)
Power Steering	Electric Power Steering (EPS)	N/A (No fluid required)
Windshield Washer	Optikleen® or equivalent	1.0 gallon (3.8 L)

Engine Oil

For the 2017 Chevy Suburban's 5.3L V8, General Motors specifies 0W-20 fully synthetic engine oil that meets the dexos1™ specification. While your original manual may reference dexos1 Gen1 or Gen2, GM has officially superseded these with dexos1 Gen3. This newer formulation offers better protection against Low-Speed Pre-Ignition (LSPI) and improved oxidation resistance.

Common Pitfalls: Never use conventional oil or a thicker viscosity like 5W-30 just because "it's a V8." The precise clearances of the L83 engine, its Active Fuel Management (AFM) lifters, and variable valve timing phasers rely heavily on the high flow rate of 0W-20. Poor lubrication to the AFM lifters is a leading cause of valvetrain failure. Interval: Follow the Oil Life Monitor (OLM), but as a master tech, I strongly recommend changing your oil every 5,000 miles to maximize lifter longevity.

Engine Coolant

Your Suburban requires Dex-Cool® coolant, which is an Organic Acid Technology (OAT) antifreeze. It is distinctively orange in color and meets GM specification 6277M.

Common Pitfalls: Never mix Dex-Cool with traditional green Inorganic Acid Technology (IAT) coolant or Hybrid Organic Acid Technology (HOAT) coolants (like Mopar or Ford yellow/gold). Mixing OAT with other formulas causes the silicates and phosphates to react, creating a thick sludge that will clog your heater core and radiator. If you are topping off, ensure you are using a 50/50 mix of Dex-Cool and distilled water. Interval: Dex-Cool is rated for 5 years or 150,000 miles, whichever comes first.

Transmission Fluid

The 2017 Suburban typically utilizes the 6L80 6-speed automatic transmission. The only acceptable fluid is DEXRON®-VI ATF. DEXRON-VI is a highly refined, low-viscosity synthetic fluid designed specifically to handle the thermal loads of modern GM transmissions.

Common Pitfalls: Beware of "Universal ATF" bottles that claim to meet DEXRON-VI, Mercon LV, and ATF+4 specs simultaneously. Transmissions are highly sensitive to friction modifiers. Using a universal fluid can result in harsh shifts, torque converter shudder, and premature clutch wear. Stick to licensed DEXRON-VI. Interval: GM recommends fluid changes at 45,000 miles under severe duty (which includes frequent towing, idling, or stop-and-go driving). Given the weight of the Suburban, dropping the pan, changing the filter, and refilling the fluid every 50,000 miles is cheap insurance.

Transfer Case (4WD Models)

If your Suburban is equipped with four-wheel drive, the transfer case requires GM Auto-Trak II Fluid (GM Part No. 88900402 or equivalent). This is a specialized, blue-colored fluid formulated specifically for GM's active transfer cases.

Common Pitfalls: Do not use DEXRON-VI transmission fluid or gear oil in this transfer case. The Auto-Trak II fluid contains specific friction modifiers required for the internal clutches that control the "Auto" 4WD setting. Using the wrong fluid will cause clutch chatter and binding during tight turns. Interval: Replace every 45,000 miles under severe service.

Front and Rear Differentials

Front Differential (4WD): Requires 75W-90 Synthetic Gear Lube. Rear Differential: The rear axle on the 2017 Suburban typically calls for a slightly thinner 75W-85 Synthetic Axle Lubricant (GM Part No. 19300457) to help meet corporate fuel economy targets. However, many technicians upgrade to 75W-90 if the vehicle is exclusively used for heavy towing.

Note on Limited Slip (G80): If your Suburban has the RPO code "G80" in the glovebox, it is equipped with the Eaton automatic locking rear differential. GM specifically dictates that no friction modifiers or limited-slip additives should be added to the G80 locker, as it operates using a mechanical flyweight mechanism, not traditional clutch packs. Interval: Inspect every 15,000 miles and change every 45,000 miles if towing frequently.

Brake Fluid

The braking system requires DOT 3 hydraulic brake fluid. While DOT 4 is backward compatible, standard DOT 3 is the factory spec and perfectly adequate for the Suburban’s brake system.

Common Pitfalls: Brake fluid is highly hygroscopic, meaning it constantly absorbs moisture from the atmosphere. Once water contaminates the fluid, it drastically lowers the boiling point, leading to a spongy pedal during heavy braking (like descending a mountain pass). Interval: Brake fluid should be completely flushed and bled every 2 to 3 years, regardless of mileage.

Power Steering & Washer Fluid

Power Steering: The 2017 Chevrolet Suburban utilizes Electric Power Steering (EPS). There is no hydraulic power steering pump, and therefore no power steering fluid to check or change.

Washer Fluid: Use any high-quality windshield washer fluid (like GM Optikleen). In northern climates, ensure you transition to a winter-grade fluid rated for -20°F or lower to prevent the fluid reservoir and pump from freezing and cracking.

DEF (Diesel Exhaust Fluid)

The 2017 Chevrolet Suburban was only offered from the factory with gasoline engines (the 5.3L V8). Therefore, no Diesel Exhaust Fluid (DEF) or API CK-4 diesel oil is required.

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Proper maintenance goes beyond just changing your engine oil. By adhering to these GM OEM fluid specifications, you'll ensure that your heavy-duty transmission, active transfer case, and vital engine components operate exactly as the engineers intended.

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