2009 Hummer H3T Owner's Manual - Page 198
2009 Hummer H3T Manual
Page 198 highlights
4-16 Driving Your Vehicle The H3T has an approximate approach angle (A) of 37.1 degrees and a departure angle (B) of 31 degrees, depending on suspension packages. High Mobility Characteristics The H3 has a 8.8 inch (22.3 cm) running ground clearance (A), a 9.2 inch (23.4 cm) axle to ground clearance (B), and a low center of gravity. The H3T has a 9.5 inch (24.1 cm) running ground clearance (A), and 8.7 inch (22.1 cm) axle to ground clearance (B), and a low center of gravity. The H3 has an approximate approach angle (A) of 37.4 degrees and a departure angle (B) of 34.7 degrees, depending on suspension packages. Design specifications required a minimum gradeability of 60% (31 degrees) slope, with the vehicle fully loaded, on high friction surfaces with maximum vehicle speed not to exceed 6 mph (9.7 km/h). The vehicle is expected to traverse this grade only for short durations. Never stop and idle the vehicle or park it on this grade.