Fluid · Transfer Case
Transfer Case
for 2025 GMC Sierra 2500HD 6.6L V8 Duramax Diesel · RWD
Fluid Type
Autotrac II transfer case fluid
Spec: GM P/N 12378508
Capacity
2qt
1.89 L
Drain & Refill
2 qt
1.89 L
Data quality
Book-style estimate
Not yet expert-verified. Have the real number? Correct it below — takes 30 seconds.
Notes
BorgWarner NVG 261XHD two-speed. Lifetime fill per GM
Other fluid systems on this vehicle
A/C Refrigerant
A/C Refrigerant
Brake Fluid
0.9 qt
Brake Fluid
0.9 qt
Coolant
31 qt
Coolant
31 qt
Engine Oil
10 qt
Engine Oil
10 qt
Front Differential
3.8 qt
Power Steering
Power Steering
Rear Differential
5.7 qt
Rear Differential
5.7 qt
Automatic Transmission
28 qt
Automatic Transmission
28 qt
Washer Fluid
1.3 qt
Washer Fluid
1.3 qt