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2026 CHEVROLET EXPRESS
6.6L V8 Duramax Diesel•RWD•AUTOMATIC•diesel•turbo
3 active safety recalls on this vehicle — view recalls
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Repairs0Labor491Torque146Fluid8DTC1103Battery1Maintenance0Recalls3
Fluid · Rear Differential

Rear Differential

for 2026 Chevrolet Express 6.6L V8 Duramax Diesel · RWD
Fluid Type
75W-90 synthetic gear oil
Spec: GM part 12378261 or API GL-5
Capacity
4.2qt
3.97 L
Drain & Refill
4.2 qt
3.97 L

Notes

10.5" or 11.5" 14-bolt full-float rear axle. Limited-slip requires friction modifier additive.

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Other fluid systems on this vehicle

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