GMC SIERRA 2020 Owner's Manual page 454

Usage
Front Axle (Four-Wheel Drive) and
Rear Axle
Hydraulic Brake System (Vehicles
with DOT 3 brake fluid)
Hydraulic Brake System (Vehicles
with DOT 4 brake fluid)
Hydraulic Power Steering System
(2500/3500 Series Only)
Key Lock Cylinders, Hood Hinges,
Body Door Hinge Pins, Tailgate
Hinge and Linkage, Fuel Door Hinge,
Tailgate Handle Pivot Points, Hinges,
Latch Bolt, and Linkage
Transfer Case (Four-Wheel Drive)
Weatherstrip Conditioning
Weatherstrip Squeaks
Windshield Washer
See your dealer.
DOT 3 Hydraulic Brake Fluid (GM Part No. 19353126, in
Canada 19353127). See Brake Fluid 0 357.
DOT 4 Hydraulic Brake Fluid (GM Part No. 19299570, in
Canada 19299571). See Brake Fluid 0 357.
GM Power Steering Fluid (GM Part No. 19329450, in Canada 19329451).
Multi-Purpose Lubricant, Superlube (GM Part No. 12346241, in
Canada 10953474).
DEXRON-VI Automatic Transmission Fluid.
Weatherstrip Lubricant. See your dealer.
Synthetic Grease with Teflon, Superlube (GM Part No. 12371287).
Automotive windshield washer fluid that meets regional freeze protection
requirements.
Service and Maintenance
Fluid/Lubricant
453