GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA-
Localizing-U.S./Canada/Mexico-14632286) - 2021 - CRC - 11/19/20
Service and Maintenance
399
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
“
Recommended Fluids and Lubricants
”
in the Duramax diesel supplement.
Fluids and lubricants identified below by name or specification, including fluids or lubricants not listed here, can be obtained from your dealer.
Usage
Fluid/Lubricant
Automatic Transmission (6-Speed
Transmission)
DEXRON-VI Automatic Transmission Fluid.
Automatic Transmission (10-Speed
Transmission)
DEXRON ULV Automatic Transmission Fluid.
Chassis Lubrication
Chassis lubricant meeting requirements of NLGI #2, Category LB or GC-LB.
Engine Coolant
50/50 mixture of clean, drinkable water and use only DEX-COOL coolant. See
Engine Oil
Engine oil meeting the dexos1 specification of the proper SAE viscosity grade. ACDelco dexos1
full synthetic is recommended. See
Front and Rear Axle Driveshaft Splines
See your dealer.
Front Axle (Four-Wheel Drive) and Rear Axle
See your dealer.
Hydraulic Brake System
DOT 3 Hydraulic Brake Fluid. See
Hydraulic Power Steering System
GM Power Steering Fluid. See your dealer.