2019 GMC SIERRA DENALI mirror controls

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-1500-11698638) - 2019 - crc - 5/18/18
Climate Controls 189Air Delivery Mode Controls :
Press
z ,
Y , or
[ to change the
direction of the airflow. Any
combination of the three controls
can be selected. An indicator light
comes on in the selected mode
button.
To change the current mode, select
one or more of the following. An
indicator light will illuminate:
z : Air is directed to the
windshield, outboard a/c outlets,
and side window outlets.
Y : Air is directed to the a/c outlets.
[ : Air is directed to the floor
outlets, with some air directed to the
windshield, outboard a/c outlets,
and side window outlets.
0 MAX : Air is directed to the
windshield and the fan runs at a
higher speed if not already above a
medium fan speed. This mode
overrides the previous mode
selected and clears fog or frost from
the windshield more quickly. When the control is pressed again, the
system returns to the previous mode
setting and fan speed.
For best results, clear all snow and
ice from the windshield before
defrosting.
@ : Press to turn on recirculation.
An indicator light comes on. Air is
recirculated to quickly cool the
inside of the vehicle. It can also be
used to help reduce outside air and
odors that enter the vehicle. The
indicator light will also go on and off
when the system automatically goes
into and out of recirculation mode to
operate more efficiently.
Avoid using recirculation for long
periods of time in cold or damp
conditions. Using recirculation in
cold or damp conditions can result
in window fogging.
A/C : Press to turn the air
conditioning on or off. An indicator
light comes on to show that the air conditioning is enabled. If the fan is
turned off, the air conditioner will not
run. The A/C light will stay on even
if the outside temperatures are
below freezing.
Rear Window Defogger
1 REAR : If equipped, press to
turn the rear window defogger on or
off. An indicator light on the button
comes on to show that the rear
window defogger is on.
The rear window defogger only
works when the engine is running.
The defogger turns off if the ignition
is turned off or to ACC/
ACCESSORY.
If equipped with heated outside
mirrors, press
1 REAR to turn
them on or off. See Heated Mirrors
0 58 .
Caution
Using a razor blade or sharp
object to clear the inside rear
window can damage the rear
(Continued)

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-1500-11698638) - 2019 - crc - 5/18/18
Climate Controls 193Avoid using recirculation for long
periods of time in cold or damp
conditions. Using recirculation in
cold or damp conditions can result
in window fogging.
A/C : Press to turn the air
conditioning on or off. An indicator
light comes on to show that the air
conditioning is enabled. If the fan is
turned off, the air conditioner will not
run. The A/C light will stay on even
if the outside temperatures are
below freezing.
Rear Window Defogger
1 REAR : If equipped, press to
turn the rear window defogger on or
off. An indicator light on the button
comes on to show that the rear
window defogger is on.
The rear window defogger only
works when the engine is running.
The defogger turns off if the ignition
is turned off or to ACC/
ACCESSORY. If equipped with heated outside
mirrors, press
1 REAR to turn
them on or off. See Heated Mirrors
0 58 .
CautionUsing a razor blade or sharp
object to clear the inside rear
window can damage the rear
window defogger. Repairs would
not be covered by the vehicle
warranty. Do not clear the inside
rear window with sharp objects.
Remote Start Climate Control
Operation : If equipped with remote
start, the climate control system
may run when the vehicle is started
remotely. If equipped with heated or
ventilated seats or a heated steering
wheel, these features may come on
during a remote start. See Remote
Vehicle Start 0 43 , Heated and
Ventilated Front Seats 0 75 , and
Heated Steering Wheel 0 131 . Sensors
The solar sensor, on top of the
instrument panel near the
windshield, monitors the solar heat.
The climate control system uses the
sensor information to adjust the
temperature, fan speed,
recirculation, and air delivery mode
for best comfort.
Do not cover the sensor; otherwise
the automatic climate control system
may not work properly.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-1500-11698638) - 2019 - crc - 5/15/18
Vehicle Care 355
Back The vehicle may not be equipped
with all of the fuses, relays, and
features shown.
Fuses Usage
F1 Right doors
F2 Left doors
F3 Universal remote
system
F4 –
F5 –
6 Front blower
F8 Lumbar switch
F10 Body control
module 6/Body control
module 7
F11 Seat/CLM
F12 Body control
module 3/Body control
module 5
F14 Mirrors/Windows
module
F17 Steering wheel
controls
F18 VPM/OBS DET Fuses Usage
F19 DLIS
F20 Cooled seats
F21 NOT R/C
F22 Heated steering wheel
F23 MISC R/C
F24 Instrument panel
cluster ignition/
Overhead
F25 Heating, ventilation,
and air conditioning
ignition/Heating,
ventilation, and air
conditioning auxiliary
F26 USB ports/Special
equipment option
retained accessory
power
F27 Accessory power
outlet/retained
accessory power
F28 Accessory power
outlet/Battery

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/-
Mexico-1500-11698638) - 2019 - crc - 5/16/18
464 Index H Halogen Bulbs . . . . . . . . . . . . . . . . . . 346
Hazard Warning Flashers . . . . . . . 180
Head Restraints . . . . . . . . . . . . . . . . . 68
Head-up Display . . . . . . . . . . . . . . . . 163
Headlamps
Aiming . . . . . . . . . . . . . . . . . . . . . . . . 346
Automatic . . . . . . . . . . . . . . . . . . . . . 179
Bulb Replacement . . . . . . . . . . . . 346
Daytime Running
Lamps (DRL) . . . . . . . . . . . . . . . . 179
Flash-to-Pass . . . . . . . . . . . . . . . . . 179
Headlamps, Front Turn
Signal, Sidemarker, and
Parking Lamps . . . . . . . . . . . . . . 347
High-Beam On Light . . . . . . . . . . 157
High/Low Beam Changer . . . . . 178
Lamps On Reminder . . . . . . . . . 158
Heated
Rear Seats . . . . . . . . . . . . . . . . . . . . . 78
Steering Wheel . . . . . . . . . . . . . . . 131
Heated and Ventilated Front
Seats . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Heated Mirrors . . . . . . . . . . . . . . . . . . . 58
Heater
Engine . . . . . . . . . . . . . . . . . . . . . . . . 223
Heating . . . . . . . . . . . . . . . . . . . . 188, 190
High-Beam On Light . . . . . . . . . . . . 157 High-Speed Operation . . . . . . . . . . 368
Hill and Mountain Roads . . . . . . . . 206
Hill Descent Control (HDC) . . . . . 245
Hill Descent Control Light . . . . . . . 153
Hill Start Assist (HSA) . . . . . . . . . . 242
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . 314
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
How to Wear Seat Belts
Properly . . . . . . . . . . . . . . . . . . . . . . . . 80
HVAC . . . . . . . . . . . . . . . . . . . . . . 188, 190
I Ignition Positions . . . . . . . . . . 217, 219
Ignition Transmission Lock
Check . . . . . . . . . . . . . . . . . . . . . . . . . 343
Immobilizer . . . . . . . . . . . . . . . . . . . . . . 55
Indicator
Pedestrian Ahead . . . . . . . . . . . . 154
Vehicle Ahead . . . . . . . . . . . . . . . . 154
Infants and Young Children,
Restraints . . . . . . . . . . . . . . . . . . . . . 100
Information
Publication Ordering . . . . . . . . . . 442
Infotainment . . . . . . . . . . . . . . . . . . . . 187
Infotainment System . . . . . . . . . . . . 446
Instrument Cluster . . . . . . . . . . . . . . 138
Interior Rearview Mirrors . . . . . . . . . 60
Introduction . . . . . . . . . . . . . . . . . . . . . . . 2 J Jump Starting - North
America . . . . . . . . . . . . . . . . . . . . . . . 395
K Keyless Entry
Remote (RKE) System . . . . . 33, 41
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
L Labeling, Tire Sidewall . . . . . . . . . . 360
Lamps
Daytime Running (DRL) . . . . . . 179
Dome . . . . . . . . . . . . . . . . . . . . . . . . . 183
Exterior Cargo . . . . . . . . . . . . . . . . 182
Exterior Controls . . . . . . . . . . . . . . 176
Exterior Lamps Off
Reminder . . . . . . . . . . . . . . . . . . . 178
Exterior Lighting Battery
Saver . . . . . . . . . . . . . . . . . . . . . . . 185
License Plate . . . . . . . . . . . . . . . . . 349
Malfunction Indicator
(Check Engine) . . . . . . . . . . . . . 149
On Reminder . . . . . . . . . . . . . . . . . 158
Reading . . . . . . . . . . . . . . . . . . . . . . 184
Lane Change Alert (LCA) . . . . . . . 267
Lane Departure
Warning (LDW) . . . . . . . . . . . . . . . . 269
Lane Keep Assist (LKA) . . . . . . . . 269