Fluid · Rear Differential
Rear Differential
for 2023 GMC Sierra 2500HD 6.6L V8 Duramax Diesel · 4WD
Fluid Type
75W-90 synthetic gear oil
Spec: GM Part No. 19371728
Capacity
5.9qt
5.58 L
Drain & Refill
5.9 qt
5.58 L
Change Interval
50,000 mi
80,450 km
Notes
AAM 11.5 inch 14-bolt full-float rear axle. May vary slightly with axle ratio
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