GMC Yukon 2023 Owner's Manual page 235

234 Driving and Operating
Other Vehicle Lane Changes
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
as ACC may not detect a vehicle ahead.
Towing with ACC
Towing a trailer with ACC is not
recommended with an aftermarket brake
controller. Aftermarket brake controllers may
not integrate properly with the ACC system.
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.
ACC may be used when towing a trailer
when trailer attached is within GM-approved
allowable size and weight limits. See Trailer
Towing 0 281.
When towing a trailer with ACC, it is
important to properly set the Trailer Gain.
See Integrated Trailer Brake Control
System in Towing Equipment 0 285 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 0 217.
Disengaging ACC
There are three ways to disengage ACC:
Step lightly on the brake pedal.
Press .
Press .
Erasing Speed Memory
The ACC set speed is erased from memory if
is pressed or if the ignition 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.