GM Service Manual Online
For 1990-2009 cars only

Recommended Fluids and Lubricants

USAGE

FLUID/LUBRICANT

Automatic Transmission

DEXRON®-III Automatic Transmission Fluid.

Automatic Transfer Case

AUTO-TRAK Fluid. (Isuzu Part No. 8-12378-508-0).

Chassis Lubrication

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.

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® coolant.

Fuel Filler Door and Rear Folding Seat

Multi-Purpose Lubricant, Superlube ® (or equivalent)

Front Wheel Bearings

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

Front and Rear Axle

SAE 80W-90 Axle Lubricant.

Hood and Door Hinges

Multi-purpose lubricant.

Hood Latch Assembly, Pivots, Spring Anchor and Release Pawl

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

Hydraulic Brake System

DOT-3 Brake Fluid.

Hydraulic Clutch System

Hydraulic Clutch Fluid (DOT-3 brake fluid).

Key Lock Cylinders

Multi-Purpose Lubricant, Superlube® or equivalent.

Park Brake Cable Guides

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

Power Steering System

Power Steering Fluid.

Propeller Shaft Slip Splines and Universal Joints

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

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).

Rear Axle (Locking Differential)

SAE 80W-90 GL-5 Gear Lubricant.

Tailgate Handle Pivot Points, Hinges, Latch Bolt and Linkage

Multi-Purpose Lubricant, Superlube ® (or equivalent)

Weatherstrip Conditioning

Dielectric Silicone Grease.

Weatherstrip Squeaks

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

Windshield Washer

Windshield Washer Solvent.