2002 GMC Sonoma Owner's Manual - Page 437

Part D: Recommended Fluids and Lubricants Fluids and lubricants identified below by name, part number or specification may be obtained from your dealer. USAGE Engine Oil 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" in the Index. 50/50 mixture of clean, drinkable water and use only GM GoodwrenchR DEX-COOLR or HavolineR DEX-COOLR Coolant. See "Engine Coolant" in the Index. USAGE Hydraulic Brake System Windshield Washer Solvent Hydraulic Clutch System Power Steering System Manual Transmission with V6 Engine Manual Transmission with L4 Engine FLUID/LUBRICANT Delco Supreme 11R Brake Fluid (GM Part No. 12377967 or equivalent DOT-3 brake fluid). GM OptikleenR Washer Solvent (GM Part No. 1051515) or equivalent. Hydraulic Clutch Fluid (GM Part No. 12345347 or equivalent DOT-3 brake fluid). GM Power Steering Fluid (GM Part No. 1052884 - 1 pint, 1050017 - 1 quart, or equivalent). Synchromesh Transmission Fluid (GM Part No. 12345349 or equivalent). Friction Modified Synchromesh Transmission Fluid (GM Part No. 12377916). Engine Coolant 7-53