Fluid Type Specifications

DIFFERENTIAL FLUID

FRONT AXLE
SAE 80W-90 Axle Lubricant (GM Part No. U.S. 89021671, in Canada 89021672).

REAR AXLE
SAE 75W-90 Synthetic Axle Lubricant (GM Part No. U.S. 89021677, in Canada 89021678) meeting GM Specification 9986115.