Hummer 2008 H3 Owner's Manual page 366

Transmission (Drain and Refill)
3.7L and 5.3L Automatic
3.7L Manual
Wheel Nut Torque
All capacities are approximate. When adding, be sure to fill to the appropriate level, as recommended in this manual.
Engine
VORTEC™ 3.7L L5
5.3L V8
5-108
Capacities and Specifications (cont'd)
Application
Engine Specifications
VIN Code
E
L
Capacities
English
5.0 qt
2.5 qt
100 lb ft
Transmission
Automatic
Manual
Automatic
Metric
4.7 L
2.4 L
140 Y
Spark Plug Gap
.040 inches (1.01 mm)
.040 inches (1.01 mm)