
GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-1500-11698638) - 2019 - crc - 5/16/18
262 Driving and Operating
Without Head-Up Display
When your vehicle approaches
another detected vehicle too rapidly,
the red FCA display will flash on the
windshield. Also, eight rapid
high-pitched beeps will sound from
the front, or both sides of the Safety
Alert Seat will pulse five times.
When this Collision Alert occurs, the
brake system may prepare for driver
braking to occur more rapidly which
can cause a brief, mild deceleration.
Continue to apply the brake pedal
as needed. Cruise control may be
disengaged when the Collision Alert
occurs. Tailgating Alert
The vehicle ahead indicator will
display amber when you are
following a vehicle ahead much too
closely.
Selecting the Alert Timing The Collision Alert control is on the
steering wheel. Press
[ to set the
FCA timing to Far, Medium, or Near.
The first button press shows the
current setting on the DIC.
Additional button presses will
change this setting. The chosen
setting will remain until it is changed
and will affect the timing of both the
Collision Alert and the Tailgating
Alert features. The timing of both
alerts will vary based on vehicle
speed. The faster the vehicle speed,
the farther away the alert will occur.
Consider traffic and weather
conditions when selecting the alert timing. The range of selectable alert
timings may not be appropriate for
all drivers and driving conditions.
Following Distance Indicator The following distance to a moving
vehicle ahead in your path is
indicated in following time in
seconds on the Driver Information
Center (DIC). The minimum
following time is 0.5 seconds away.
If there is no vehicle detected
ahead, or the vehicle ahead is out of
sensor range, dashes will be
displayed.
Unnecessary Alerts FCA may provide unnecessary
alerts for turning vehicles, vehicles
in other lanes, objects that are not
vehicles, or shadows. These alerts
are normal operation and the
vehicle does not need service.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-1500-11698638) - 2019 - crc - 5/16/18
266 Driving and Operating
Without Head-Up Display
When the vehicle approaches a
pedestrian ahead too rapidly, the
red FPB alert display will flash on
the windshield. Eight rapid
high-pitched beeps will sound from
the front, or both sides of the Safety
Alert Seat will pulse five times.
When this Pedestrian Alert occurs,
the brake system may prepare for
driver braking to occur more rapidly
which can cause a brief, mild
deceleration. Continue to apply the
brake pedal as needed. Cruise
control may be disengaged when
the Front Pedestrian Alert occurs.
Automatic Braking
If FPB detects it is about to crash
into a pedestrian directly ahead, and
the brakes have not been applied,
FPB may automatically brake
moderately or brake hard. This can help to avoid some very low speed
pedestrian crashes or reduce
pedestrian injury. FPB can
automatically brake to detected
pedestrians between 8 km/h (5 mph)
and 80 km/h (50 mph). Automatic
braking levels may be reduced
under certain conditions, such as
higher speeds.
If this happens, Automatic Braking
may engage the Electric Parking
Brake (EPB) to hold the vehicle at a
stop. Release the EPB. A firm press
of the accelerator pedal will also
release Automatic Braking and
the EPB.
{ Warning
FPB may alert or automatically
brake the vehicle suddenly in
situations where it is unexpected
and undesired. It could falsely
alert or brake for objects similar in
shape or size to pedestrians,
including shadows. This is normal
operation and the vehicle does
(Continued) Warning (Continued) not need service. To override
Automatic Braking, firmly press
the accelerator pedal, if it is safe
to do so.
Automatic Braking can be disabled
through vehicle personalization. See
“ Front Pedestrian Detection ” in
“ Collision/Detection Systems ” under
Vehicle Personalization 0 167 .
{ WarningUsing the Front Pedestrian
Braking system while towing a
trailer could cause you to lose
control of the vehicle and crash.
Turn the system to Alert or Off
when towing a trailer.
Cleaning the System
If FPB does not seem to operate
properly, cleaning the outside of the
windshield in front of the rearview
mirror may correct the issue.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-1500-11698638) - 2019 - crc - 5/16/18
Driving and Operating 277.
Vehicles can tow in D (Drive).
Tow/Haul Mode is recommended
for heavier trailers. See Tow/
Haul Mode 0 234 . If the
transmission downshifts too
often, a lower gear may be
selected using Manual Mode.
See Manual Mode 0 232 .
If equipped, the following driver
assistance features should be
turned off when towing a trailer:
.
Cruise Control
.
Lane Keep Assist (LKA)
.
Park Assist
.
Reverse Automatic
Braking (RAB)
If equipped, the following driver
assistance features should be
turned to alert or off when towing a
trailer:
.
Forward Automatic
Braking (FAB)
.
Intelligent Brake Assist (IBA)
.
Front Pedestrian Braking (FPB) If equipped with Lane Change Alert
(LCA), the LCA detection zones that
extend back from the side of the
vehicle do not move further back
when a trailer is towed. Use caution
while changing lanes when towing a
trailer.
If equipped with Rear Cross Traffic
Alert (RCTA), use caution while
backing up when towing a trailer, as
the RCTA detection zones that
extend out from the back of the
vehicle do not move further back
when a trailer is towed.
{ WarningTo prevent serious injury or death
from carbon monoxide (CO),
when towing a trailer:
.
Do not drive with the
liftgate, trunk/hatch,
or rear-most window open.
.
Fully open the air outlets on
or under the instrument
panel.
(Continued) Warning (Continued) .
Adjust the climate control
system to a setting that
brings in only outside air.
See “ Climate Control
Systems ” in the Index.
For more information about
carbon monoxide, see Engine
Exhaust 0 228 .
Towing a trailer requires experience.
The combination of the vehicle and
trailer is longer and not as
responsive as the vehicle itself. Get
used to the handling and braking of
the combination by driving on a
level road surface before driving on
public roads.
The trailer structure, the tires, and
the brakes must all be rated to carry
the intended cargo. Inadequate
trailer equipment can cause the
combination to operate in an
unexpected or unsafe manner.
Before driving, inspect all trailer
hitch parts and attachments, safety
chains, electrical connectors, lamps,

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/-
Mexico-1500-11698638) - 2019 - crc - 5/16/18
Index 461Charging
Wireless . . . . . . . . . . . . . . . . . . . . . . 135
Charging System Light . . . . . . . . . 148
Check
Engine Light (Malfunction
Indicator) . . . . . . . . . . . . . . . . . . . . 149
Ignition Transmission Lock . . . 343
Child Restraints
Infants and Young Children . . . 100
Lower Anchors and Tethers
for Children . . . . . . . . . . . . . . . . . 106
Older Children . . . . . . . . . . . . . . . . . . 99
Securing . . . . . . . . . . . . 117, 120, 121
Systems . . . . . . . . . . . . . . . . . . . . . . 103
Circuit Breakers . . . . . . . . . . . . . . . . 350
Cleaning
Exterior Care . . . . . . . . . . . . . . . . . 403
Interior Care . . . . . . . . . . . . . . . . . . 408
Climate Control Systems . . . . . . . 188
Air Conditioning . . . . . . . . . . . . . . 188
Dual Automatic . . . . . . . . . . . . . . . 190
Heating . . . . . . . . . . . . . . . . . . . . . . . 188
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
Cluster, Instrument . . . . . . . . . . . . . 138
Collision Damage Repair . . . . . . . 440
Compartments
Storage . . . . . . . . . . . . . . . . . . . . . . . 125
Compass . . . . . . . . . . . . . . . . . . . . . . . 132 Connected Services
Connections . . . . . . . . . . . . . . . . . . 456
Diagnostics . . . . . . . . . . . . . . . . . . . 458
Navigation . . . . . . . . . . . . . . . . . . . . 455
Connections
Connected Services . . . . . . . . . . 456
Control
Hill Descent . . . . . . . . . . . . . . . . . . 245
Traction and Electronic
Stability . . . . . . . . . . . . . . . . . . . . . 243
Control Light
Hill Descent . . . . . . . . . . . . . . . . . . 153
Control of a Vehicle . . . . . . . . . . . . . 198
Convex Mirrors . . . . . . . . . . . . . . . . . . 56
Coolant
Engine Temperature Gauge . . 145
Engine Temperature
Warning Light . . . . . . . . . . . . . . . 155
Cooling . . . . . . . . . . . . . . . . . . . . 188, 190
Cooling System . . . . . . . . . . . . . . . . . 327
Courtesy Transportation
Program . . . . . . . . . . . . . . . . . . . . . . . 439
Cruise Control . . . . . . . . . . . . . . . . . . 250
Light . . . . . . . . . . . . . . . . . . . . . . . . . . 158
Cupholders . . . . . . . . . . . . . . . . . . . . . 125
Customer Assistance . . . . . . . . . . . 436
Offices . . . . . . . . . . . . . . . . . . . . . . . . 435 Customer Assistance (cont'd)
Text Telephone (TTY)
Users . . . . . . . . . . . . . . . . . . . . . . . 436
Customer Information
Publications Ordering
Information . . . . . . . . . . . . . . . . . . 442
Customer Satisfaction
Procedure . . . . . . . . . . . . . . . . . . . . . 433
D Damage Repair, Collision . . . . . . . 440
Danger, Warning, and Caution . . . . 2
Data Collection
Infotainment System . . . . . . . . . . 446
OnStar . . . . . . . . . . . . . . . . . . . . . . . 446
Data Recorders, Event . . . . . . . . . 445
Daytime Running
Lamps (DRL) . . . . . . . . . . . . . . . . . . 179
Defensive Driving . . . . . . . . . . . . . . . 198
Delayed Locking . . . . . . . . . . . . . . . . . 45
Diagnostics
Connected Services . . . . . . . . . . 458
Differential, Limited-Slip . . . . . . . . 250
Distracted Driving . . . . . . . . . . . . . . . 197
Dome Lamps . . . . . . . . . . . . . . . . . . . 183
Door
Ajar Light . . . . . . . . . . . . . . . . . . . . . 158
Delayed Locking . . . . . . . . . . . . . . . . 45

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/-
Mexico-1500-11698638) - 2019 - crc - 5/16/18
Index 465Lane Keep Assist Light . . . . . . . . . 153
Lap-Shoulder Belt . . . . . . . . . . . . . . . 82
LATCH System
Replacing Parts after a
Crash . . . . . . . . . . . . . . . . . . . . . . . .117
LATCH, Lower Anchors and
Tethers for Children . . . . . . . . . . . 106
LED Lighting . . . . . . . . . . . . . . . . . . . . 347
Lighting
Entry . . . . . . . . . . . . . . . . . . . . . . . . . 184
Exit . . . . . . . . . . . . . . . . . . . . . . . . . . . 184
Illumination Control . . . . . . . . . . . 183
LED . . . . . . . . . . . . . . . . . . . . . . . . . . 347
Task . . . . . . . . . . . . . . . . . . . . . . . . . . 182
Lights
Airbag Readiness . . . . . . . . . . . . . 147
Antilock Brake System
(ABS) Warning . . . . . . . . . . . . . . 152
Brake System Warning . . . . . . . 151
Charging System . . . . . . . . . . . . . 148
Check Engine (Malfunction
Indicator) . . . . . . . . . . . . . . . . . . . . 149
Cruise Control . . . . . . . . . . . . . . . . 158
Door Ajar . . . . . . . . . . . . . . . . . . . . . 158
Driver Mode Control . . . . . . . . . . 156
Electric Parking Brake . . . . . . . . 152
Electronic Stability Control
(ESC), Off . . . . . . . . . . . . . . . . . . . 155 Lights (cont'd)
Engine Coolant
Temperature Warning . . . . . . . 155
Engine Oil Pressure . . . . . . . . . . 157
Flash-to-Pass . . . . . . . . . . . . . . . . . 179
Four-Wheel-Drive . . . . . . . . . . . . . 153
Front Fog Lamp . . . . . . . . . . . . . . 158
High-Beam On . . . . . . . . . . . . . . . . 157
High/Low Beam Changer . . . . . 178
Hill Descent Control . . . . . . . . . . 153
Lane Keep Assist . . . . . . . . . . . . . 153
Low Fuel Warning . . . . . . . . . . . . 157
Seat Belt Reminders . . . . . . . . . . 146
Security . . . . . . . . . . . . . . . . . . . . . . 157
Service Electric Parking
Brake . . . . . . . . . . . . . . . . . . . . . . . 152
Tire Pressure . . . . . . . . . . . . . . . . . 156
Tow/Haul Mode . . . . . . . . . . . . . . . 153
Traction Off . . . . . . . . . . . . . . . . . . . 154
Limited-Slip Differential . . . . . . . . . 250
Locking Rear Axle . . . . . . . . . . . . . . 250
Locks
Automatic Door . . . . . . . . . . . . . . . . . 46
Delayed Locking . . . . . . . . . . . . . . . . 45
Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Lockout Protection . . . . . . . . . . . . . . 46
Power Door . . . . . . . . . . . . . . . . . . . . . 45
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . 46 Loss of Control . . . . . . . . . . . . . . . . . 200
Low Fuel Warning Light . . . . . . . . . 157
Low-Profile Tires . . . . . . . . . . . . . . . . 360
Lower Anchors and Tethers
for Children (LATCH
System) . . . . . . . . . . . . . . . . . . . . . . . 106
Lumbar Adjustment . . . . . . . . . . . . . . 71
Front Seats . . . . . . . . . . . . . . . . . . . . . 71
M Maintenance
Records . . . . . . . . . . . . . . . . . . . . . . 428
Maintenance and Care
Additional . . . . . . . . . . . . . . . . . . . . . 422
Maintenance Schedule . . . . . . . . . 415
Recommended Fluids and
Lubricants . . . . . . . . . . . . . . . . . . . 425
Transfer Case . . . . . . . . . . . . . . . . 235
Malfunction Indicator Lamp . . . . . 149
Manual Mirrors . . . . . . . . . . . . . . . . . . 56
Manual Mode . . . . . . . . . . . . . . . . . . . 232
Manual Windows . . . . . . . . . . . . . . . . 63
Memory Features . . . . . . . . . . . . . . . . 12
Memory Seats . . . . . . . . . . . . . . . . . . . 73
Messages
Engine Power . . . . . . . . . . . . . . . . 167
Vehicle . . . . . . . . . . . . . . . . . . . . . . . 166
Vehicle Speed . . . . . . . . . . . . . . . . 167