Exterior Lamps Off; Reminder; Headlamp High/Low-Beam; Changer - GMC Sierra Denali 2017 Owner's Manual

168 Lighting
The system detects a preceding
vehicle's taillamps.
The outside light is bright
enough that high-beam
headlamps are not required.
The vehicle's speed drops below
20 km/h (12 mph).
The IntelliBeam system is
disabled by the high/low-beam
changer or the flash-to-pass
feature. If this happens, the high/
low-beam changer must be
activated two times within
two seconds to reactivate the
IntelliBeam system. The
instrument cluster light will come
on to indicate the IntelliBeam is
reactivated. See Headlamp
High/Low-Beam Changer 0 168
and Flash-to-Pass 0 169.
The high beams may not turn off
automatically if the system cannot
detect another vehicle's lamps
because of any of the following:
The other vehicle's lamps are
missing, damaged, obstructed
from view, or otherwise
undetected.
The other vehicle's lamps are
covered with dirt, snow, and/or
road spray.
The other vehicle's lamps cannot
be detected due to dense
exhaust, smoke, fog, snow, road
spray, mist, or other airborne
obstructions.
The vehicle's windshield is dirty,
cracked, or obstructed by
something that blocks the view
of the light sensor.
The vehicle is loaded such that
the front end points upward,
causing the light sensor to aim
high and not detect headlamps
and taillamps.
Driving on winding or hilly roads.
The automatic high-beam
headlamps may need to be disabled
if any of the above conditions exist.

Exterior Lamps Off

Reminder

A reminder chime sounds when the
headlamps or parking lamps are
manually turned on, the ignition is
off, and a door is open. To disable
the chime, turn the lamps off.
Headlamp High/
Low-Beam Changer
: Push the turn signal lever
toward the instrument panel to
change the headlamps from low to
high beam.
Pull the turn signal lever toward you
and release it to return to low-beam
headlamps.
When the high-beam headlamps are
on, this indicator light on the
instrument cluster will also be on.