Owner's Manual
Page 395
... or equivalent) or lubricant meeting GM Specification 9986115. Front Wheel Bearings Power Steering System Automatic Transmission Key Lock Cylinders Rear Axle SAE 75W-90 Synthetic (1500 Series Only) Axle Lubricant (GM Part No. 12378261) or equivalent meeting requirements of NLGI # 2, Category GC or GC-LB (GM Part No. 1051344 or equivalent...
... or equivalent) or lubricant meeting GM Specification 9986115. Front Wheel Bearings Power Steering System Automatic Transmission Key Lock Cylinders Rear Axle SAE 75W-90 Synthetic (1500 Series Only) Axle Lubricant (GM Part No. 12378261) or equivalent meeting requirements of NLGI # 2, Category GC or GC-LB (GM Part No. 1051344 or equivalent...