Fluid · Rear Differential
Rear Differential
for 2026 GMC Yukon XL 5.3L V8 · 4WD
Fluid Type
75W-90 synthetic gear oil
Spec: GM P/N 19260040 or API GL-5
Capacity
5.5qt
5.2 L
Drain & Refill
5.5 qt
5.2 L
Data quality
Book-style estimate
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Notes
10.5-inch 14-bolt rear axle. Lifetime fill. Add limited-slip additive if equipped with locking differential
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