Engine Oil (Gasoline Engine)

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.

Engine Oil (Diesel Engine)

Engine Oil with the letters CG-4 designation may appear either alone, or in combination with other API designations, such as API CG-4/SH, CG-4/SJ, SH/CG-4, or SJ/CG-4. These letters show American Petroleum Institute (API) levels of quality. To determine the preferred viscosity for your vehicle's diesel engine.

Engine Coolant

50/50 mixture of clean, drinkable water and use only GM Goodwrench® DEX-COOL® or Havoline® DEX-COOL® Coolant.

Hydraulic Brake System

Delco Supreme 11® Brake Fluid (GM P/N 12377967 or equivalent DOT-3 Brake Fluid).

Windshield Washer Solvent

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

Hydraulic Clutch System

Hydraulic Clutch Fluid (GM P/N 12345347 or equivalent DOT-3 Brake Fluid).

Parking Brake Cable Guides

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

Power Steering System

GM Power Steering Fluid (GM P/N 1052884 - 0.4732 liters (1 pint), 1050017 - 0.9464 liters (1 quart), or equivalent).

Manual Transmission (5-Speed with Low Gear, RPO MW3)

GM Goodwrench Synthetic Manual Transmission Fluid (GM P/N 12346190 - 0.9464 liters (1 quart) or equivalent SAE 75W-90 GL-4 Gear Oil.

Automatic Transmission

DEXRON®-III Automatic Transmission Fluid

Key Lock Cylinders

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

Floor Shift Linkage

Lubriplate® Lubricant Aerosol (GM P/N 12346293 or equivalent) or lubricant meeting requirements of NLGI #2, Category LB or GC-LB.

Chassis Lubrication

Chassis Lubricant (GM P/N 12377985 or equivalent) or Lubricant meeting requirements of NLGI No. 2, Category LB or GC-LB.

Front Wheel Bearings (RWD)

Wheel Bearing Lubricant meeting requirements of NLGI #2, Category GC or GC-LB (GM P/N 105344 or equivalent).

Front Axle (S4WD)

SAE 80W-90 Axle Lubricant (GM P/N 89021671, Canadian P/N 10950849 or equivalent).

Front Axle (F4WD and all 9.25)

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

Rear Axle

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

Differential, C3 (HD3500) Trucks With Dana Rear Axle

SAE 75W-140 Synthetic Axle Lubricant (GM P/N 12346140) or equivalent.

Manual Transfer Case

DEXRON®-III Automatic Transmission Fluid.

Automatic Transfer Case

Automatic Transfer Case Fluid (GM P/N 12378396).

Front Axle Propshaft Spline, Rear Driveline Center Splines and Universal Joints

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

One-Piece Propshaft Spline (Two-Wheel Drive with Auto. Trans)

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

Hood Latch Assembly, Secondary Latch, Pivots, Spring Anchor and Release Pawl.

Lubriplate® Lubricant Aerosol (GM P/N 12346293 or equivalent) or lubricant meeting requirements of NLGI #2, Category LB or GC-LB.

Hood and Door Hinges

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

Body Door Hinge Pins, Tailgate Hinge and Linkage Folding Seat and Fuel Door Hinge

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

Tailgate Handle Pivot Points, Hinges, Latch Bolt and Linkage

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

Weatherstrip Conditioning

Dielectric Silicone Grease (GM P/N 12346241 or equivalent).

Weatherstrip Squeaks

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