GMC Sierra Denali 1500 2023 Owner's Manual page 268

Driving and Operating 267
If the steering wheel light bar flashes green, the system has detected that your head and eyes may not
be directed toward the road.
First Alert
The flashing will stop when the system detects that your head and eyes appear to be directed toward
the road.
If the steering wheel light bar flashes green for too long, Super Cruise will alert the driver to take
control of steering immediately by flashing the light bar red. Also, either beeps will sound or the Safety
Alert Seat will vibrate. Touch the Settings icon on the infotainment home page. Select Vehicle to
display the list of available options and select Alert Type and Adaptive Cruise Go Notifier in
Second Alert
Collision/Detection Systems .
Take over steering, then Super Cruise will disengage.
To re-engage Super Cruise, press . See Using Super Cruise previously in this section.
If the steering wheel light bar flashes red for too long, a voice command will tell you to take control of
the vehicle.
Take control of the steering immediately; ACC and Super Cruise will disengage.
A DIC message will indicate that Super Cruise is locked out. Super Cruise cannot be re-engaged until the
Third Alert
next ignition cycle.
Continued failure to take over steering will cause the vehicle to brake to a stop and OnStar will be
called. The brake lamps and hazard warning flashers will come on.
Take control of the vehicle and continue driving.