Chevrolet Silverado 2015 Owner's Manual page 496

Service and Maintenance 11-13
Usage Fluid/Lubricant
Manual Transmission Manual Transmission Fluid (GM Part No. 93436060).
Key Lock Cylinders Multi-Purpose Lubricant, Superlube (GM Part No. 12346241, in
Canada 10953474).
Floor Shift Linkage Lubriplate Lubricant Aerosol (GM Part No. 89021668, in Canada 89021674)
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) SAE 80W-90 Axle Lubricant (GM Part No. 89021671, in
Four-Wheel Drive Canada 89021672).
Front Axle (4WD 2500/3500) SAE 75W-90 Synthetic Axle Lubricant (GM Part No. 89021677, in
Canada 89021678).
Rear Axle (1500) SAE 75W-85 Synthetic Axle Lubricant (GM Part No. 19300457, in
Canada 19300458).
Rear Axle (2500/3500) SAE 75W-90 Synthetic Axle Lubricant (GM Part No. 89021677, in
Canada 89021678).
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Transfer Case (Four-Wheel Drive) DEXRON
-VI Automatic Transmission Fluid.