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2026 GMC SIERRA 2500HD
6.6L V8 Duramax Diesel•4WD•AUTOMATIC•diesel•turbo
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Repairs0Labor525Torque144Fluid9DTC821Battery1Maintenance0Recalls0
Fluid · Rear Differential

Rear Differential

for 2026 GMC Sierra 2500HD 6.6L V8 Duramax Diesel · 4WD
Fluid Type
75W-90 synthetic
Spec: API GL-5
Capacity
5.7qt
5.39 L
Drain & Refill
5.7 qt
5.39 L

Notes

AAM 11.5-inch rear axle (14-bolt). Lifetime fill per GM, service if contaminated. Add limited-slip additive if equipped

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Other fluid systems on this vehicle

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