Fluid · Rear Differential
Rear Differential
for 2025 GMC Sierra 1500 3.0L I6 Duramax Diesel · RWD
Fluid Type
75W-90 synthetic gear oil
Spec: GM part 19366008 or equivalent GL-5
Capacity
2.75qt
2.6 L
Drain & Refill
2.75 qt
2.6 L
Notes
RWD configuration; filled for life, recommend check at 50k
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