GM Service Manual Online
For 1990-2009 cars only

Recommended Fluids and Lubricants

USAGE

FLUID/LUBRICANT

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.

Engine Coolant

A 50/50 mixture of clean, drinkable water and use only DEX-COOL® or Havoline® DEX-COOL® (orange -colored, silicate-free) coolant.

Engine Coolant Supplemental Sealer

Notice: DO NOT use cooling system seal tabs, or similar compounds, unless otherwise instructed. The use of cooling system seal tabs, or similar compounds, may restrict coolant flow through the passages of the cooling system or the engine components. Restricted coolant flow may cause engine overheating and/or damage to the cooling system or the engine components/assembly.

Hydraulic Brake System

DOT-3 Brake Fluid.

Hydraulic Clutch System

Hydraulic Clutch Fluid (DOT-3 brake fluid).

Park Brake Guides

Chassis Lubricant meeting requirements of NLGI Grade 2, Category LB or GC-LB.

Power Steering System

Power Steering Fluid.

Manual Transmission

V6 Engine: Synchromesh Transmission Fluid (Isuzu P/N 8-12345-349-0 or equivalent).

L4 Engine: Manual Transmission Fluid with 5% friction modifier (Isuzu P/N 8-12377-916-0).

Automatic Transmission

DEXRON®-III Automatic Transmission Fluid with a G-License Number (G-xxxx). The G-License Number will be found on the back label.

Key Lock Cylinders

Multi-Purpose Lubricant, Superlube® or equivalent.

Chassis Lubrication

Chassis Lubricant meeting requirements of NLGI Grade 2, Category LB or GC-LB.

Front Wheel Bearings-RWD

Wheel Bearing Lubricant meeting requirements of NLGI Grade 2, Category GC or GC-LB.

Differential, Standard, Front and Rear Axle

SAE 80W-90 GL-5 Gear Lubricant.

Differential, Locking

SAE 80W-90 GL-5 Gear Lubricant.

Transfer Case

DEXRON®-III Automatic Transmission Fluid.

Automatic Transfer Case

Automatic Transfer Case Fluid (Isuzu P/N 8-12378-396-0).

Column Shift

Chassis Lubricant meeting requirements of NLGI Grade 2, Category LB or GC-LB.

Windshield Washer Solvent

Windshield Washer Solvent.

Propeller Shaft Slip Splines and Universal Joints

Chassis Lubricant meeting requirements of NLGI Grade 2, Category LB or GC-LB.

Clutch Pushrod to Fork Joint

Chassis Lubricant meeting requirements of NLGI Grade 2, Category LB or GC-LB.

Constant Velocity Universal Joint

Chassis Lubricant meeting requirements of NLGI Grade 2, Category LB or GC-LB.

Hood Latch Assembly

  1. Pivots and Spring Anchor
  2. Release Pawl

Lubriplate® Lubricate Aerosol or lubricant meeting requirements of NLGI Grade 2, Category LB or GC-LB.

Weatherstrip Conditioning

Dielectric Silicone Grease.

Weatherstrip Squeaks

Synthetic Grease with Teflon, Loctite Superlube® (or equivalent).