GMC Express 2011 Owner's Manual page 382

11-8 Service and Maintenance
Recommended Fluids, Lubricants, and Parts
Recommended Fluids and Lubricants
This maintenance section applies to vehicles with a gasoline engine. If the vehicle has a diesel engine, see the
maintenance schedule section in the Duramax Diesel Supplement.
Fluids and lubricants identified below by name, part number, or specification can be obtained from your dealer.
Usage
Engine Oil
Engine Coolant
Hydraulic Brake System
Windshield Washer
Parking Brake Cable Guides
Power Steering System
Automatic Transmission
The engine requires engine oil approved to the dexos specification.
Oils meeting this specification can be identified with the dexos certification
mark. Look for and use only an engine oil that displays the dexos
certification mark of the proper viscosity grade. See Engine Oil on
page 10 7.
50/50 mixture of clean, drinkable water and use only DEX-COOL Coolant.
See Engine Coolant on page 10 20.
DOT 3 Hydraulic Brake Fluid
(GM Part No. 12377967, in Canada 89021320).
®
Optikleen Washer Solvent.
Chassis Lubricant (GM Part No. 12377985, in Canada 88901242) or
lubricant meeting requirements of NLGI #2, Category LB or GC-LB.
GM Power Steering Fluid (GM Part No. 89021184, in Canada 89021186).
®
DEXRON VI Automatic Transmission Fluid.
Fluid/Lubricant