GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - crc - 5/11/17
446
Technical Data
Application
Capacities
Metric
English
Fuel Tank
1500 Series Standard and Short Box
98.4 L
26.0 gal
1500 Series Long Box
128.7 L
34.0 gal
2500 Series and 3500 Series Standard Box
136.3 L
36.0 gal
2500 Series and 3500 Series Long Box
136.3 L
36.0 gal
3500 Series Chassis Cab
240.4 L
63.5 gal
3500 Chassis Cab
–
Front Tank
89.0 L
23.5 gal
3500 Chassis Cab
–
Rear Tank (if equipped)
151.4 L
40.0 gal
Transfer Case Fluid
1.5 L
1.6 qt
Wheel Nut Torque
190
Y
140 lb ft
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 Specifications
Engine
VIN Code
Spark Plug Gap
4.3L V6 (LV3)
H
0.95
–
1.10 mm (0.037
–
0.043 in)