For 1990-2009 cars

Application | Fluid/Lubricant
--- | ---
Automatic Transmission | DEXRON®-III G-license number Automatic Transmission Fluid.
Chassis Lubricant | Chassis lubricant (GM P/N 12377985 or equivalent) or lubricant meeting requirements of NLGI #2, Category LB or GC-LB.
Differential, Locking | Only use Axle Lubricant GM P/N 1052271. Do NOT add friction modifier.
Engine Coolant | 50/50 mixture of clean, drinkable water and use only GM Goodwrench® DEX-COOL® or Havoline® DEX-COOL® coolant.
Engine Oil | 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, refer to Engine Oil Viscosity in Explanation of Scheduled Services.
Front Wheel Bearings | Wheel Bearing Lubricant (GM P/N 1051344 or equivalent) or lubricant meeting requirements of NLGI #2, Category GC or GC-LB.
Hydraulic Brake System | Delco Supreme 11® Brake Fluid (GM P/N 12377967 or equivalent DOT-3 brake fluid).
Parking Brake Cable Guides | Chassis lubricant (GM P/N 12377985 or equivalent) or lubricant meeting requirements of NLGI #2, Category LB or GC-LB.
Power Steering System | GM Power Steering Fluid (GM P/N 1052884 - 1 pint or 1050017 - 1 quart, or equivalent).
Propshaft Splines and Universal Joints | Chassis lubricant (GM P/N 12377985 or equivalent) or lubricant meeting requirements of NLGI #2, Category LB or GC-LB.
Rear Drive Axle (8.6" Axle) | Lubricant 12378261 or equivalent meeting GM Specification 9986115
Rear Drive Axle (9.5", 10.5" Axles - with RPO G80) | Lubricant 1052271 only
Rear Drive Axle (9.5", 10.5" Axles - without RPO G80) | Lubricant 1052271 or SAE 80W-90 GL5
Supercharger Oil | Supercharger Oil (GM P/N 12345982) or equivalent
Windshield Washer Solvent | GM Optikleen® Washer Solvent (GM P/N 1051515) or equivalent.