Fluid · Rear Differential
Rear Differential
for 2018 GMC Yukon XL 5.3L V8 · RWD
Fluid Type
75W-90 synthetic gear oil
Spec: GM Part No. 12378261 or API GL-5
Capacity
2.75qt
2.6 L
Drain & Refill
2.75 qt
2.6 L
Change Interval
50,000 mi
80,450 km
Notes
RWD model uses 8.6" or 9.76" rear axle. Capacity varies slightly by axle type, ~2.75qt typical. Limited slip requires additive if equipped.
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