2010 GMC Savana 2500 Cargo Owner's Manual - Page 386

Usage Front and Rear Axle Fluid/Lubricant SAE 75W-90 Synthetic Axle Lubricant (GM Part No. U.S. 89021677, in Canada 89021678) or equivalent meeting GM Specification 9986115. DEXRON®-VI Automatic Transmission Fluid. Spline Lubricant, Special Lubricant (GM Part No. U.S. 12345879, in Canada 10953511) or lubricant meeting requirements of GM 9985830. Usage Hood Hinges Transfer Case One-Piece Propshaft Slip Yoke Spline, Two-Piece Propshaft Slip-in-Tube Spline Weatherstrip Conditioning Weatherstrip Squeaks Fluid/Lubricant Multi-Purpose Lubricant, Superlube (GM Part No. U.S. 12346241, in Canada 10953474). Weatherstrip Lubricant (GM Part No. U.S. 3634770, in Canada 10953518) or Dielectric Silicone Grease (GM Part No. U.S. 12345579, in Canada 992887). Synthetic Grease with Teflon, Superlube (GM Part No. U.S. 12371287, in Canada 10953437). 7-12