GM Service Manual Online
For 1990-2009 cars only

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 this vehicle's engine, refer to Explanation of Scheduled Services .

Engine Oil (Diesel Engine)

CI-4 or CH-4 Oils designated as API CI-4 or CH-4 are recommended for your vehicle. The CI-4 or CH-4 designations may appear either alone, together or in combination with other API designations, such as API CI-4/SL. These letters show American Petroleum Institute (API) levels of quality.

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 (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

Hydraulic Clutch System (5-Speed Trans.)

Hydraulic Clutch Fluid GM P/N 12345347 (Canadian P/N 10953517) or equivalent DOT-3 brake fluid

Hydraulic Clutch System (6-Speed Trans.)

Hydraulic Clutch Fluid GM P/N 88958860 (Canadian P/N  88901244)

Power Steering System

GM Power Steering Fluid GM P/N 89021184 (Canadian P/N 89021186) or equivalent.

Power Steering System (PHT)

Power Steering Fluid GM P/N 88901975 (Canadian P/N 88901976)

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

GM Goodwrench Synthetic Manual Transmission Fluid GM P/N 12346190 (Canadian P/N 10953477) or equivalent SAE 75W-85 GL-4 gear oil

Manual Transmission (5-Speed without Low Gear, RPO MG5)

Synchromesh Transmission Fluid GM P/N 12345349 (Canadian P/N 10953465) or equivalent

Manual Transmission (6-Speed)

TransSynd™ Synthetic Automatic Transmission Fluid GM P/N 12378515 (Canadian P/N 88900701)

Automatic Transmission

DEXRON®-III, Automatic Transmission Fluid

Key Lock Cylinders

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

Floor Shift Linkage

Lubriplate® Lubricant Aerosol GM P/N 1052349 (Canadian P/N 992723) 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 #2 Category LB or GC-LB

Front Axle (8.25" Axle)

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

Front Axle (8.25" F4WD Axle, 9.25" S4WD Axle)

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

Rear Axle (with QS4 Axle Only)

SAE 75W-90 Synthetic Axle Lubricant GM P/N 12378557 (Canadian P/N 88901362) or equivalent.

DO NOT add friction modifier.

Rear Axle (Steering 4-Wheel)

Synthetic Axle Lubricant; use only GM P/N 12378557 (Canadian P/N 88901362).

DO NOT add friction modifier.

Manual Transfer Case (RPO NP2)

Manual Transmission Fluid GM P/N 88861800 (Canadian P/N 88861801)

Automatic Transfer Case (Four-Wheel Drive, RPO NP1)

AUTO-TRAK® II Fluid GM P/N 12378508 (Canadian P/N  10953626)

Automatic Transfer Case (All-Wheel Drive, RPO NP3)

DEXRON-III Automatic Transmission Fluid.

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

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

Rear Drive line Center Spline

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

Hood Hinges

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

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

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

Outer Tailgate Handle Pivot Points, Hinges, Latch Bolt and Linkage

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