2003 GMC Sierra 1500 Pickup Owner's Manual - Page 517

Part D: Recommended Fluids and Lubricants Fluids and lubricants identified below by name, part number or specification may be obtained from your dealer. Usage Fluid/Lubricant Engine oil with the American Petroleum Institute Certified for Gasoline Engines starburst symbol of the proper viscosity. To determine the preferred viscosity for your vehicle's engine, see Engine Oil on page 5- 17. Usage Hydraulic Clutch System (5-Speed Trans.) Hydraulic Clutch System (6-Speed Trans.) Fluid/Lubricant Hydraulic Clutch Fluid (GM Part No. U S . 12345347, in Canada 1095351 7, or equivalent DOT-3 brake fluid). Hydraulic Clutch Fluid. Use only GM Part No. U S . 88958860, in Canada 88901 244. Engine Oil GM Power Steering Fluid (GM Part Power Steering No. U S . 1052884, in Canada System 993294, or equivalent). Manual Transmission (5-Speed with Low Gear, RPO M W3) Manual Transmission (5-Speed without Low Gear, RPO MG5) Manual Transmission (6-Speed) GM Goodwrench Synthetic Manual Transmission Fluid (GM Part No. U S . 12346190, in Canada 10953477) or equivalent SAE 75W-85 GL-4 gear oil. Synchromesh Transmission Fluid (GM Part No. U.S. 12345349, in Canada 10953465, or equivalent). TranSyndTM Synthetic Transmission Fluid (GM Part No. US. 12378515, in Canada 88900701). 50/50 mixture of clean, drinkable water and use only DEX-COOL Engine Coolant Coolant. See Engine Coolant on page 5-33. Hydraulic Brake Delco Supreme 11 Brake Fluid or System equivalent DOT-3 brake fluid. Windshield GM Optikleen Washer Solvent or Washer Solvent equivalent. 6-18