Fluid · Rear Differential
Rear Differential
for 2026 Chevrolet Suburban 3.0L I6 Duramax · 4WD
Fluid Type
75W-90 synthetic gear oil
Spec: GM Part 19371575
Capacity
3.8qt
3.59 L
Drain & Refill
3.8 qt
3.59 L
Data quality
Book-style estimate
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Notes
11.5" 14-bolt full-float rear axle, fill-for-life per GM
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