Engine Oil (Gasoline Engine)

Enine oil with the American Pertoleum 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.

Engine Oil (Diesel Engine)

Engine oil with the letters CH-4 or CG-4 is best for your vehicle. The CH-4 or CG-4 designation may appear either alone, or in combination with other API designations, such as API CH-4/SJ, CG-4/SH or CH-4/CG-4/SJ.

Engine Coolant

50/50 mixture of clean, drinkable water and use only GM Goodwrench® DEX-COOL® or Havoline® DEX-COOL® Coolant. See "Engine Coolant" in the Index.

Hydraulic Brake System

Delco Supreme 11® Brake Fluid (GM P/N 12377967, Canadian P/N 992667 or equivalent DOT-3 brake fluid).

Windshield Washer Solvent

GM Optikleen® Washer Solvent (GM P/N 1051515, Canadian P/N 993033) or equivalent.

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, 1050017 - 1 quart, Canadian P/N 993294 - 1 pint, 992646 - 1 quart or equivalent).

Automatic Transmission

DEXRON® III Automatic Transmission Fluid.

Key Lock Cylinders

Multi-Purpose Lubricant, Superlube® (GM P/N 12346241, Canadian P/N 10953474 or equivalent).

Chassis Lubrication

Chassis Lubricant (GM P/N 12377985 or equivalent) or lubricant meeting requirements of NLGI #2, Category LB or GC-LB.

Front Wheel Bearings

Wheel Bearing lubricant meeting requirements of NLGI #2, Category GC or GC-LB (GM P/N 1051344, Canadian P/N 993037 or equivalent).

Rear Axle (1500 Series Only)

SAE 75W-90 Synthetic Axle Lubricant (GM P/N 12378261, Canadian P/N 10953455) or equivalent meeting GM Specification 9986115.

Rear Axle (2500 and 3500 Series with Standard Differential Only)

SAE 80W-90 Axle Lubricant (GM P/N 1052271, Canadian P/N 10950849 or equivalent).

Rear Axle (2500 and 3500 Series with Locking Differential Only)

Axle Lubricant; use only GM P/N 1052271, Canadian P/N 10950849.

Do not add friction modifier.

Prop Shaft Splines and Universal Joints

Chassis Lubricant (GM P/N 12377985 or equivalent) or lubricant meetin requirements of NLGI #2, Category LB or GC-LB.

One-Piece Propshaft Spline

Spline Lubricant, Special Lubricant (GM P/N 12345879, Canadian P/N 10953511) or lubricant meeting requirements of GM 9985830.

hood hinges

Multi-Purpose Lubricant, Superlube® (GM P/N 12346241, Canadian P/N 10953474 or equivalent).

Weatherstrip Conditioning

Dielectric Silicone Grease (GM P/N 12345579, Canadian P/N 1974984 or equivalent).

Weatherstrip Squeaks

Synthetic Grease with Teflon, Superlube® (GM P/N 12371287, Canadian P/N 10953437 or equivalent).