GMC 2012 Sierra Denali Owner's Manual page 459

Transmission Fluid (Pan Removal and Filter Replacement)
1500 Series
2500HD/3500 Series
Transfer Case Fluid
1500 Series
2500HD/3500 Series
Wheel Nut Torque
All capacities are approximate. When adding, be sure to fill to the approximate level, as recommended in this
manual. Recheck fluid after filling.
Oil filter should be changed at every oil change.
Engine
6.0L V8
6.2L V8
Application
Engine Specifications
VIN Code
G
2
Technical Data
Capacities
Metric
5.7 L
6.0 L
1.4 L
1.5 L
190
Transmission
Automatic
Automatic
12-3
English
6.0 qt
6.3 qt
1.5 qt
1.6 qt
140 lb ft
Spark Plug Gap
1.02 mm (0.040 in)
1.02 mm (0.040 in)