GMC Hummer EV 2023 Owner's Manual page 169

GMC Hummer EV Owner Manual (GMNA-Localizing-MidEast-16569278) -
2023 - CRC - 1/25/23
Use L (Low) mode and keep a firm grip on
the steering wheel.
Maintain a slow speed.
Warning
Driving to the top of a hill at high speed
can cause a crash. There could be a
drop-off, embankment, cliff, or even
another vehicle. You could be seriously
injured or killed. As you near the top of a
hill, slow down and stay alert.
When possible, drive straight up or down
the hill.
Slow down when approaching the top of
the hill.
Use headlamps even during the day to
make the vehicle more visible.
When driving down a hill, keep the
vehicle headed straight down. Use low
mode to slow the vehicle and help keep
the vehicle under control.
Warning
Do not coast downhill in N (Neutral) or
with the vehicle turned off. See Hill and
Mountain Roads 0 175 for tips on
Warning (Continued)
maximizing regenerative braking and
minimizing the load on the brake system.
Heavy braking when going down a hill
can cause your brakes to overheat and
fade. This could cause loss of control and
you or others could be injured or killed.
Apply the brakes lightly when descending
a hill and use a low mode to keep vehicle
speed under control.
Avoid turns that take the vehicle across
the incline of the hill. A hill that can be
driven straight up or down might be too
steep to drive across. Driving across an
incline puts more weight on the downhill
wheels, which could cause a downhill
slide or a rollover.
Loose gravel, muddy spots, or even wet
grass can cause the tires to slip sideways,
downhill. If the vehicle slips sideways, it
can hit something and potentially
roll over.
Hidden obstacles can make the steepness
of the incline more severe. If a rock is
driven across with the uphill wheels, or if
the downhill wheels drop into a rut or
depression, the vehicle can tilt even more.
(Continued)
Driving and Operating
If an incline must be driven across, and
the vehicle starts to slide, turn downhill.
This should help straighten out the
vehicle and prevent side slipping.
Warning
Getting out of the vehicle on the
downhill side when stopped across an
incline is dangerous. If the vehicle rolls
over, you could be crushed or killed.
Always get out on the uphill side of the
vehicle and stay well clear of the
rollover path.
Driving in Mud, Sand, Snow, or Ice
Use L (Low) mode when driving in mud.
Keep the vehicle moving to avoid getting
stuck.
Traction changes when driving on sand. On
loose sand, such as on beaches or sand
dunes, the tires tend to sink into the sand.
This affects steering, accelerating, and
braking. Drive at a reduced speed and avoid
sharp turns or abrupt maneuvers.
Traction is reduced on hard-packed snow and
ice and it is easy to lose control. Reduce
vehicle speed when driving on hard-packed
snow and ice.
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