How much fluid does a 2017 Silverado 3500 differential hold?
Front differential capacity is about 3 quarts and the rear differential about 7.5 quarts. Exact amounts vary by axle configuration, so consult your manual or axle tag for your precise figure.
The 2017 Chevrolet Silverado 3500 HD uses two differentials—one at the front and one at the rear—whose capacities depend on the specific axle ratio and optional equipment. This article lays out typical capacities, how to verify them on your truck, and how to perform a proper fill.
Front differential capacity
The front differential on the Silverado 3500 HD is smaller than the rear and generally requires about 2.9 quarts of gear oil. Exact capacity can vary slightly based on axle ratio and whether a limited-slip differential is installed.
- Estimated capacity: roughly 2.7–3.2 quarts (commonly cited around 2.9 quarts)
- Variations: axle code and presence of LSD can influence the precise amount, though the difference is small
Always confirm the exact figure for your specific vehicle using the axle tag on the differential or the GM service manual for your axle code.
Rear differential capacity
The rear differential on the 2017 Silverado 3500 HD holds more oil due to the larger gear set. The typical capacity is about 7.5 quarts, with a practical range roughly between 7.2 and 7.9 quarts depending on the axle and whether a limited-slip differential is present.
- Estimated capacity: about 7.2–7.9 quarts (commonly around 7.5 quarts)
- Affects by configuration: axle ratio and LSD can cause small variations
To ensure accuracy, verify the exact capacity for your axle code via the differential tag or the GM service documentation for your build.
How to verify and maintain differential fluid
To ensure proper fill, use the differential fill plug as the gauge. With the vehicle on level ground and securely supported, remove the fill plug and check the fluid level. Refill until fluid begins to seep from the hole, then reinstall the plug. Use the gear oil grade recommended by GM for your axle (often GL-5 75W-90 or 80W-90, as specified in your manual).
Notes on variations
Different configurations—such as diesel powertrains, varying axle ratios, and the presence of a G80 locking differential—do not typically change the required fluid capacity, but they can affect the exact fill specification and oil grade. When in doubt, reference the build sheet, axle code tag, or GM service database for your exact figures.
Summary
For a 2017 Silverado 3500 HD, the front differential generally holds about 3 quarts of gear oil, while the rear differential holds about 7.5 quarts. Exact figures depend on axle configuration and options; always confirm with the axle tag or the owner’s/service manual and follow the recommended fill procedure and oil grade.
