Hummer 2009 H2 - Manual (Page 121)

Driver Shift Control (DSC)
The vehicle has Driver Shift Control (DSC). DSC
controls the transmission and vehicle speed while driving
down hill or towing a trailer by allowing you to select
a desired range of gears.
To use this feature:
1. Move the shift lever to the M (Manual Mode).
This will force a downshift from the current gear,
for gears 3 through 6.
2. Press the (+) plus or ( − ) minus button on the left
side of the steering wheel, to select the desired
range of gears for current driving conditions.
When in the M (Manual Mode) a number will display
next to the M, indicating the maximum available gear.
The DIC display will show the message MANUAL SHIFT
on the first line and the maximum available gear will be
displayed on the second line. See Driver Information
Center (DIC) on page 3-46 and DIC Operation and
Displays (Using DIC Buttons) on page 3-47 or DIC
Operation and Displays (Using Trip Odometer Reset
Stem) on page 3-52 for more information. The number
displayed in the DIC is the highest gear available.
The transmission will be limited to the gear selected and
lower gears. Shifting will occur normally while driving,
however the cluster will continue to display the maximum
available gear. Higher gears will not be available unless
the selection is changed to include higher gears using
the (+) plus button.
Grade Braking is not available when the Driver Shift
Control is active. See Tow/Haul Mode on page 2-36 and
Towing a Trailer on page 4-55 for more information.
While using the DSC, cruise control and the tow/haul
mode can be used.
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