GMC SIERRA 2020 Owner's Manual page 461

460 Technical Data
3500 Series Chassis Cab
Transfer Case Fluid (1500 Series Only)
Transfer Case Fluid (2500 and 3500 Series Only)
Wheel Nut Torque
All capacities are approximate. When adding, be sure to fill to the approximate level, as recommended in this
manual. Recheck fluid level after filling.
*Engine cooling system capacity values are based on the entire cooling system and its components.
2.7L L4 (L3B)
4.3L V6 (LV3)
5.3L V8 (L82)
5.3L V8 (L84)
6.2L V8 (L87)
6.6L V8 (L8T)
Spark plug gaps are preset by the manufacturer. Re-gapping the spark plug is not recommended and can damage
the spark plug.
Application
Rear Tank
Engine Specifications
Engine
Capacities
Metric
151.4 L
1.5 L
2.3 L
190
VIN Code
K 0.65 0.75 mm (0.026 0.030 in)
H 0.95 1.10 mm (0.037 0.043 in)
F 0.95 1.10 mm (0.037 0.043 in)
D 0.95 1.10 mm (0.037 0.043 in)
L 0.95 1.10 mm (0.037 0.043 in)
7 0.95 1.10 mm (0.037 0.043 in)
English
40.0 gal
1.6 qt
2.4 qt
140 lb ft
Spark Plug Gap