Air Suspension - GMC Hummer EV 2024 Owner's Manual

GMC Hummer EV Owner Manual (GMNA-Localizing-MidEast-16639039) -
2024 - CRC - 3/20/23
To lock the front axle:
1. Press the front/rear axle locking switch
and hold for five seconds. The vehicle
must be stopped or moving less than
24 km/h (15 mph).
2. After releasing the front/rear axle locking
switch, a solid light on the switch
displays to indicate the front axle is
locked. The front axle lock disables the
Antilock Brake System (ABS) and
illuminates the ABS warning light.
To unlock the front axle:
1. Press the rear axle locking switch. The
front axle unlocks and the rear axle
remains locked. See Locking Rear Axle
0 205.
2. Press the front/rear axle locking switch.
The front and rear axles both unlock.
The locking front axle disengages
automatically when the vehicle speed
exceeds 24 km/h (15 mph) or Terrain mode is
exited.
ABS automatically enables and the ABS
warning light turns off when the locking
front axle disengages.
After pressing the switch to unlock the axle,
in rare circumstances, it may remain locked
due to torque in the driveline. To quickly
unlock the axle, turn the steering wheel to
the right and to the left while traveling at a
low speed.

Air Suspension

If equipped, the Air Suspension feature
provides full time load leveling capability
along with the benefit of adjusting ride
height for increased convenience and
capability.
Driving and Operating
Warning
To help avoid personal injury or death,
make sure the area underneath the
vehicle and inside the wheel wells is clear
when lowering the vehicle.
Warning
To help avoid personal injury or death,
always select the lowest ride height for
the current driving conditions. Higher ride
heights raise the vehicle's center of
gravity, increasing the chance of a
rollover during extreme maneuvers.
Warning
Heavy loads on the roof rack will make
the vehicle's center of gravity higher,
increasing the possibility of a rollover. To
avoid losing control of the vehicle, always
select the normal height setting and
avoid high speeds, sudden starts, sharp
turns, sudden braking, or abrupt
maneuvers when carrying cargo on the
roof rack.
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