2006 GMC Sierra 1500 Pickup Owner's Manual - Page 564

Usage Floor Shift Linkage Chassis Lubrication Front Axle (1500 Series) Front Axle (1500 HD, 2500, 2500 HD, and 3500 Series) Rear Axle Fluid/Lubricant Lubriplate Lubricant Aerosol (GM Part No. U.S. 12346293, in Canada 992723) or lubricant meeting requirements of NLGI #2 Category LB or GC-LB. Chassis Lubricant (GM Part No. U.S. 12377985, in Canada 88901242) or lubricant meeting requirements of NLGI #2, Category LB or GC-LB. SAE 80W-90 Axle Lubricant (GM Part No. U.S. 1052271, in Canada 10950849). SAE 75W-90 Synthetic Axle Lubricant (GM Part No. U.S. 12378261, in Canada 10953455) meeting GM Specification 9986115. SAE 75W-90 Synthetic Axle Lubricant (GM Part No. U.S. 12378261, in Canada 10953455) meeting GM Specification 9986115. Usage Manual Transfer Case Automatic Transfer Case Front Axle Propshaft Spline or One-Piece Propshaft Spline (Two-Wheel Drive with Auto. Trans.) Rear Driveline Center Spline Fluid/Lubricant DEXRON®-III Automatic Transmission Fluid. Look for "Approved for the H-Specification" on the label. AUTO-TRAK II Fluid (GM Part No. U.S. 12378508, in Canada 10953626). Spline Lubricant, Special Lubricant (GM Part No. U.S. 12345879, in Canada 10953511) or lubricant meeting requirements of GM 9985830. Chassis Lubricant (GM Part No. U.S. 12377985, in Canada 88901242) or lubricant meeting requirements of NLGI #2, Category LB or GC-LB. 6-16