2019 GMC SIERRA DENALI headlamp

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-1500-11698638) - 2019 - crc - 5/15/18
Service and Maintenance 423Lamps
Properly working headlamps,
taillamps, and brake lamps are
important to see and be seen on
the road.
.
Signs that the headlamps need
attention include dimming, failure
to light, cracking, or damage.
The brake lamps need to be
checked periodically to ensure
that they light when braking.
.
With a multi-point inspection,
your dealer can check the lamps
and note any concerns.
Shocks and Struts
Shocks and struts help aid in control
for a smoother ride.
.
Signs of wear may include
steering wheel vibration, bounce/
sway while braking, longer
stopping distance, or uneven
tire wear.
.
As part of the multi-point
inspection, trained dealer
technicians can visually inspect
the shocks and struts for signs of leaking, blown seals,
or damage, and can advise
when service is needed.
Tires
Tires need to be properly inflated,
rotated, and balanced. Maintaining
the tires can save money and fuel,
and can reduce the risk of tire
failure.
.
Signs that the tires need to be
replaced include three or more
visible treadwear indicators; cord
or fabric showing through the
rubber; cracks or cuts in the
tread or sidewall; or a bulge or
split in the tire.
.
Trained dealer technicians can
inspect and recommend the right
tires. Your dealer can also
provide tire/wheel balancing
services to ensure smooth
vehicle operation at all speeds.
Your dealer sells and services
name brand tires. Vehicle Care
To help keep the vehicle looking like
new, vehicle care products are
available from your dealer. For
information on how to clean and
protect the vehicle ’ s interior and
exterior, see Interior Care 0 408 and
Exterior Care 0 403 .
Wheel Alignment
Wheel alignment is critical for
ensuring that the tires deliver
optimal wear and performance.
.
Signs that the alignment may
need to be adjusted include
pulling, improper vehicle
handling, or unusual tire wear.
.
Your dealer has the required
equipment to ensure proper
wheel alignment.
Windshield
For safety, appearance, and the
best viewing, keep the windshield
clean and clear.
.
Signs of damage include
scratches, cracks, and chips.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/-
Mexico-1500-11698638) - 2019 - crc - 5/16/18
460 Index Assistance Systems for
Driving . . . . . . . . . . . . . . . . . . . . . . . . 260
Assistance Systems for
Parking and Backing . . . . . . . . . . 254
Auto Stop
Stop/Start System . . . . . . . . . . . . 222
Automatic
Dimming Mirrors . . . . . . . . . . . . . . . . 58
Door Locks . . . . . . . . . . . . . . . . . . . . . 46
Forward Braking . . . . . . . . . . . . . . 263
Headlamp System . . . . . . . . . . . . 179
Transmission . . . . . . . . . . . . . . . . . 229
Transmission Fluid . . . . . . . . . . . 325
Automatic Transmission
Manual Mode . . . . . . . . . . . . . . . . . 232
Axle, Front . . . . . . . . . . . . . . . . . . . . . . 340
Axle, Rear . . . . . . . . . . . . . . . . . . . . . . 341
B Battery
Exterior Lighting Battery
Saver . . . . . . . . . . . . . . . . . . . . . . . 185
Load Management . . . . . . . . . . . . 185
Power Protection . . . . . . . . . . . . . 185
Battery - North America . . . . 337, 395
Blade Replacement, Wiper . . . . . 344
Blind Spot Mirrors . . . . . . . . . . . . . . . 58 Brake
Parking, Electric . . . . . . . . . . . . . . 241
System Warning Light . . . . . . . . 151
Brake Pad Life System . . . . . . . . . 335
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . 335
Antilock . . . . . . . . . . . . . . . . . . . . . . . 240
Assist . . . . . . . . . . . . . . . . . . . . . . . . . 242
Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . 336
Pad Life System . . . . . . . . . . . . . . 335
Braking . . . . . . . . . . . . . . . . . . . . . . . . . 198
Automatic Forward . . . . . . . . . . . 263
Braking System
Front Pedestrian (FPB) . . . . . . . 264
Break-In, New Vehicle . . . . . . . . . . 216
Bulb Replacement
Center High-Mounted
Stoplamp (CHMSL) and
Cargo Lamp . . . . . . . . . . . . . . . . . 348
Halogen Bulbs . . . . . . . . . . . . . . . . 346
Headlamp Aiming . . . . . . . . . . . . . 346
Headlamps . . . . . . . . . . . . . . . . . . . 346
Headlamps, Front Turn
Signal, Sidemarker, and
Parking Lamps . . . . . . . . . . . . . . 347
License Plate Lamps . . . . . . . . . 349
Taillamps, Turn Signal,
Stoplamps, and Back-up
Lamps . . . . . . . . . . . . . . . . . . . . . . 347 Buying New Tires . . . . . . . . . . . . . . . 378
C Calibration . . . . . . . . . . . . . . . . . . . . . . 132
California
Perchlorate Materials
Requirements . . . . . . . . . . . . . . . 313
California
Proposition
65 Warning . . . . . . . . . .313, 337, 395,
Back Cover
Canadian Vehicle Owners . . . . . . . . 2
Capacities and
Specifications . . . . . . . . . . . . . . . . . 430
Carbon Monoxide
Engine Exhaust . . . . . . . . . . . . . . . 228
Tailgate . . . . . . . . . . . . . . . . . . . . . . . . . 47
Winter Driving . . . . . . . . . . . . . . . . 206
Cargo
Tie-Downs . . . . . . . . . . . . . . . . . . . . 127
Caution, Danger, and Warning . . . . 2
Center Console Storage . . . . . . . . 126
Center High-Mounted
Stoplamp (CHMSL) and
Cargo Lamp . . . . . . . . . . . . . . . . . . . 348
Center Seat . . . . . . . . . . . . . . . . . . . . . 70
Chains, Tire . . . . . . . . . . . . . . . . . . . . 382

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