System Specifications

DIFFERENTIAL FLUID

Front Axle - Four-Wheel Drive
SAE 80W-90 Axle Lubricant (GM Part No. U.S. 1052271, in Canada 10950849).

Front Axle - All-Wheel Drive
SAE 75W-90 Synthetic Axle Lubricant (GM Part No. U.S. 12378261, in Canada 10953455) meeting GM Specification 9986115.

Rear Axle
SAE 75W-90 Synthetic Axle Lubricant (GM Part No. U.S. 12378261, in Canada 10953455) meeting GM Specification 9986115.

Rear Axle - Steerable
Synthetic Axle Lubricant; use only GM Part No. U.S. 12378557, in Canada 88901362.Do not add friction modifier.