GMC HUMMER EV 2023 Owner's Manual page 213

212 Driving and Operating
ACC will not detect a vehicle ahead until it
is completely in the lane. The brakes may
need to be manually applied.
Objects Not Directly in Front of Your Vehicle
The detection of objects in front of the
vehicle may not be possible if:
The vehicle or object ahead is not within
your lane.
The vehicle ahead is shifted, not centered,
or is shifted to one side of the lane.
Driving in Narrow Lanes
Vehicles in adjacent traffic lanes or roadside
objects may be incorrectly detected when
located along the roadway.
Do Not Use ACC on Hills
Do not use ACC when driving on steep hills.
ACC will not detect a vehicle ahead.
Towing with ACC
If equipped when towing a trailer, ACC
driving characteristics such as following gap,
acceleration rates and braking rates may be
modified to provide a better towing
experience.
When ACC is used with vehicles equipped
with aftermarket trailer brake controller,
disengage ACC before applying the manual
trailer brake. ACC will not automatically
disengage when manual trailer brake is
applied.
ACC may be used when towing a trailer
when trailer attached is within GM-approved
allowable size and weight limits. See Trailer
Towing 0 266.
When towing a trailer with ACC, it is
important to properly set the Trailer Gain.
See Integrated Trailer Brake Control
System in Towing Equipment 0 270 for
Trailer Gain Adjustment Procedure.
Use Tow/Haul mode when driving down
steep hills or mountain grades, or when
hauling heavy loads. See Driver Mode
Control 0 194.
Disengaging ACC
There are four ways to disengage ACC:
Step lightly on the brake pedal.
Press .
Press .
Press the Regen On Demand paddle.
Erasing Speed Memory
The ACC set speed is erased from memory if
is pressed or if the vehicle is turned off.
Weather Conditions Affecting ACC
System operation may be limited under
snow, heavy rain, or road spray conditions.
Accessory Installations and Vehicle
Modifications
Do not install or place any object around
the front camera windshield area that would
obstruct the front camera view.
Do not install objects on top of the vehicle
that overhang and obstruct the front
camera, such as a canoe, kayak, or other
items that can be transported.
Do not modify the hood, headlamps, or fog
lamps, as this may limit the camera s ability
to detect an object.