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GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA-
Localizing-U.S./Canada/Mexico-14632286) - 2021 - CRC - 11/19/20
140
Lighting
Lighting
Exterior Lighting
Exterior Lamp Controls . . . . . . . . . . . . . . . . 140
Exterior Lamps Off Reminder . . . . . . . . . . 142
Headlamp High/Low-Beam Changer . . . . 142
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
Daytime Running Lamps (DRL) . . . . . . . . . 142
Automatic Headlamp System . . . . . . . . . . 142
Hazard Warning Flashers . . . . . . . . . . . . . . 143
Turn and Lane-Change Signals . . . . . . . . . 144
Fog Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
Task Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . 145
Auxiliary Roof-Mounted Lamp . . . . . . . . . 145
Exterior Cargo Lamps . . . . . . . . . . . . . . . . . . 145
Interior Lighting
Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
Dome Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . 146
Reading Lamps . . . . . . . . . . . . . . . . . . . . . . . . 147
Lighting Features
Entry Lighting . . . . . . . . . . . . . . . . . . . . . . . . . 147
Exit Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
Battery Load Management . . . . . . . . . . . . 147
Battery Power Protection . . . . . . . . . . . . . . 148
Exterior Lighting Battery Saver . . . . . . . . 148
Exterior Lighting
Exterior Lamp Controls
The exterior lamp control is on the
instrument panel to the left of the steering
wheel.
O
:
Turns off the automatic headlamps and
Daytime Running Lamps (DRL). Turn the
headlamp control to
O
again to turn the
automatic headlamps or DRL back on.
For vehicles first sold in Canada, off will only
work when the vehicle is in P (Park).
AUTO :
Automatically turns on the
headlamps, parking lamps, taillamps,
instrument panel lights, roof marker lamps
(if equipped), front/rear sidemarker lamps,
and license plate lamps.
;
:
Turns on the parking lamps including
all lamps, except the headlamps and fog
lamps, if equipped.
For some trim levels and series of trucks
first sold in Canada, the headlamps may
turn on with the parking lamps.
2
:
Turns on the headlamps together with
the parking lamps, taillamps, instrument
panel lights, roof marker lamps (if
equipped), front/rear sidemarker lamps, and
license plate lamps.
When the headlamps are turned on while
the vehicle is on, the headlamps turn off
automatically 10 minutes after the ignition
is turned off. When the headlamps are
turned on while the vehicle is off, the
headlamps will stay on for 10 minutes
before turning off to prevent the battery
from being drained. Turn the headlamp
control off and then back to the headlamp
on position to make the headlamps stay on