Service and Maintenance 11-9
Usage Fluid/Lubricant
Floor Shift Linkage
Lubriplate Lubricant Aerosol (GM Part No. 12346293, in Canada 992723)
or lubricant meeting requirements of NLGI #2 Category LB or GC-LB.
Chassis Lubrication
Chassis Lubricant (GM Part No. 12377985, in Canada 88901242) or
lubricant meeting requirements of NLGI #2, Category LB or GC-LB.
Front Axle (1500 Series) ‐
Four‐Wheel Drive
SAE 80W-90 Axle Lubricant (GM Part No. 89021671,
in Canada 89021672).
Front Axle (1500, 2500 HD, and
3500 HD Series)
SAE 75W-90 Synthetic Axle Lubricant (GM Part No. 89021677,
in Canada 89021678).
Rear Axle
SAE 75W-90 Synthetic Axle Lubricant (GM Part No. 89021677,
in Canada 89021678).
Transfer Case (Four‐Wheel Drive) DEXRON
®
-VI Automatic Transmission Fluid.
Front Axle Propshaft Spline or
One-Piece Propshaft Spline
(Two-Wheel Drive with 4‐Speed
Auto. Trans.)
Spline Lubricant, Special Lubricant (GM Part No. 12345879,
in Canada 10953511).
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