Automatic Transmission

for 2021 Chevrolet Silverado 2500HD 6.6L V8 Duramax L5P · 4WD

Fluid Type

Dexron VI ATF

Spec: GM Dexron VI

Capacity

17.4qt

16.46 L

Drain & Refill

6 qt

5.68 L

Notes

Allison 10-speed automatic (10L1000). Total dry-fill capacity. Drain-and-refill approximately 6 quarts. No specified routine service interval — lifetime fill, but severe use (towing) may benefit from changes.

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Other fluid systems on this vehicle

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