Recommended Fluids And Lubricants - GMC Sierra 2018 Owner's Manual

440 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 and/or an
Allison Transmission, see Recommended Fluids and Lubricants in the Duramax diesel supplement.
Fluids and lubricants identified below by name, part number, or specification can be obtained from your dealer.
Usage
Automatic Transmission (6-Speed
Transmission)
Automatic Transmission (8-Speed
Transmission)
Chassis Lubrication
Engine Coolant
Engine Oil
Floor Shift Linkage
Front Axle Driveshaft Splines (All
1500/2500/3500 Series) and Rear
Axle Driveshaft Splines (All 1500
Series)
DEXRON-VI Automatic Transmission Fluid.
DEXRON-HP Automatic Transmission Fluid (GM Part No. 19331925, in
Canada 19300537).
Chassis Lubricant (GM Part No. 12377985, in Canada 88901242) or
lubricant meeting requirements of NLGI #2, Category LB or GC-LB.
50/50 mixture of clean, drinkable water and use only DEX-COOL coolant.
See Cooling System 0 346.
Engine oil meeting the dexos1 specification of the proper SAE viscosity
grade. ACDelco dexos1 is recommended. See Engine Oil 0 337.
Lubriplate Lubricant Aerosol (GM Part No. 89021668, in Canada 89021674)
or lubricant meeting requirements of NLGI #2 Category LB or GC-LB.
Spline Lubricant, Special Lubricant (GM Part No. 19257121, in
Canada 19257122).
Fluid/Lubricant