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2026 GMC SIERRA 3500HD
6.6L V8 Duramax Diesel•4WD•AUTOMATIC•diesel•turbo
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Repairs0Labor538Torque146Fluid9DTC821Battery1Maintenance0Recalls0
Fluid · Rear Differential

Rear Differential

for 2026 GMC Sierra 3500HD 6.6L V8 Duramax Diesel · 4WD
Fluid Type
75W-90 synthetic
Spec: GM Part 88862624 (75W-90 GL-5)
Capacity
6.3qt
5.96 L
Drain & Refill
6.3 qt
5.96 L

Notes

AAM 11.5 full-float rear axle. Add limited slip additive if equipped. SRW: 6.3 qt, DRW: 7.4 qt

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Other fluid systems on this vehicle

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