GMC YUKON 2017 Owner's Manual page 246

If a vehicle is detected in your path,
ACC can speed up the vehicle or
apply limited, moderate braking to
maintain the selected following gap.
To disengage ACC, apply the brake.
If the Traction Control System (TCS)
or electronic stability control system
activates while ACC is engaged,
ACC may automatically disengage.
See Traction Control/Electronic
Stability Control 0 239. When road
conditions allow ACC to be safely
used, the ACC can be turned
back on.
ACC will not engage if the TCS or
electronic stability control system is
disabled.
Warning
ACC has limited braking ability
and may not have time to slow
the vehicle down enough to avoid
a collision with another vehicle
you are following. This can occur
when vehicles suddenly slow or
stop ahead, or enter your lane.
Also see Alerting the Driver in
(Continued)
Warning (Continued)
this section. Complete attention is
always required while driving and
you should be ready to take
action and apply the brakes. See
Defensive Driving 0 201.
Warning
ACC will not detect or brake for
children, pedestrians, animals,
or other objects.
Do not use ACC when:
On winding and hilly roads
or when the sensors are
blocked by snow, ice, or dirt.
The system may not detect
a vehicle ahead. Keep the
entire front of the vehicle
clean.
(Continued)
Driving and Operating
Warning (Continued)
Visibility is low, such as in
fog, rain, or snow
conditions. ACC
performance is limited under
these conditions.
On slippery roads where
fast changes in tire traction
can cause excessive
wheel slip.
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