2010 Hummer H3 Owner's Manual - Page 194

9-10 Driving and Operating The H3 has an approximate approach angle (A) of 37.4 degrees and an approximate departure angle (B) of 34.7 degrees, depending on suspension packages. The H3T has an approximate approach angle (A) of 37.1 degrees and an approximate departure angle (B) of 31 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 9.7 km/h (6 mph). The vehicle is expected to traverse this grade only for short durations. Never stop and idle the vehicle or park it on this grade. The vehicle should be able to traverse a 40% (22 degrees) side slope at 9.7 km/h (6 mph) while fully loaded on high friction surfaces.