warning lights CHEVROLET SUBURBAN 2021 User Guide

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Page 298 of 433

CHEVROLET SUBURBAN 2021 User Guide Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13690484) - 2021 - crc - 8/17/20
Driving and Operating 297
Warning (Continued)
carefully pull the vehicle over to the
side of

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13690484) - 2021 - crc - 8/17/20
Driving and Operating 297
Warning (Continued)
carefully pull the vehicle over to the
side of the road when traffic
conditions allow.
Trailer Tires
Special Trailer (ST) tires differ from vehicle
tires. Trailer tires are designed with stiff
sidewalls to help prevent sway and to
support heavy loads. These features can
make it difficult to determine if the trailer
tire pressures are low only based on a visual
inspection.
Always check all trailer tire pressures before
each trip when the tires are cool. Low trailer
tire pressure is a leading cause of trailer tire
blow-outs.
If the vehicle is equipped with a trailer tire
pressure monitoring system, see the trailer
tire pressure monitoring system description
and the trailering app.
Trailer tires deteriorate over time. The trailer
tire sidewall will show the week and year
the tire was manufactured. Many trailer tire
manufacturers recommend replacing tires
more than six years old.Overloading is another leading cause of
trailer tire blow-outs. Never load your trailer
with more weight than the tires are
designed to support. The load rating is
located on the trailer tire sidewall.
Always know the maximum speed rating for
the trailer tires before driving. This may be
significantly lower than the vehicle tire
speed rating. The speed rating may be on
the trailer tire sidewall. If the speed rating is
not shown, the default trailer tire speed
rating is 105 km/h (65 mph).
Trailering App
Trailer Lights App
If equipped, the Trailer Lights App is on the
Home Page of the infotainment display.
Touch Start to cycle the trailer lamps on and
off to determine if they are working. The
test follows this sequence:
1. The running lights turn on first and remain on throughout the sequence.
2. The brake lights turn on for about two seconds.
3. The left turn signal light flashes three times. 4. The right turn signal light flashes three
times.
5. The reverse lights turn on for about two seconds.
6. Steps 2–5 repeat for approximately one minute and 45 seconds, or until the
test deactivates.
Touch Stop to stop the test. The test will
automatically end after one minute and
45 seconds.
The sequence also deactivates when any of
the following occur:
.The ignition is turned off.
.The transmission is shifted out of P (Park).
.The brake pedal is pressed.
.The turn signal is activated.
.The hazard warning lights are activated.
Trailering App
If equipped, the Trailering App is on the
Home Page of the infotainment display.
If equipped this feature allows profiles for
connected trailers to be created to view
status, to store and track trailer usage
information, and to set up towing assistance
features.

Page 302 of 433

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13690484) - 2021 - crc - 8/17/20
Driving and Operating 301
Connection Trailer Lighting Faults Detected
The Trailering App System monitors for
electrical faults on the trailer lights.
A message about the lighting issue will
appear on the DIC. The infotainment display
will also show the lighting issue in the
Connection Status view. Repair your trailer
lights if needed. A trailer lighting issue is
not covered by your GM warranty.
Diagnose View
Touch Diagnose to see more information
about the connection problem.
This view will display the names of the
trailer connector pins, a graphic of the trailer
connector, and a graphic of the back of the
trailer.
Any connector pin that failed will be amber
color, and the location of the corresponding
connection will be highlighted on the
graphic of the back of the trailer.
The Running Lights connection may not
detect partial outages. Activate the light test
to check all trailer lamps. See“Light Test”
following. Light Test
Touch Start Light Test to cycle the trailer
lights on and off to determine if they are
working. The test follows this sequence:
1. The running lights turn on first and remain on throughout the sequence.
2. The brake lights turn on for about two seconds.
3. The left turn signal light flashes three times.
4. The right turn signal light flashes three times.
5. The reverse lights turn on for about two seconds.
6. Steps 2–5 repeat for approximately one minute and 45 seconds, or until the
test deactivates.
Touch Stop to stop the test. The test will
automatically end after one minute and
45 seconds.
The sequence also deactivates when any of
the following occur:
.The ignition is turned off.
.The transmission is shifted out of P (Park).
.The brake pedal is pressed.
.The turn signal is activated.
.The hazard warning lights are activated.
Tires
1. Trailer Tire Pressure/Temperature
Tire Pressure and Temperature
If the TTPMS sensor-to-vehicle learn process
was completed, the status view will display
the current tire pressure and temperature of
the trailer tires related to the active Trailer
Profile. If a tire’s pressure is low or high, the
color of the pressure value will be amber.
If a sensor malfunctions, the values are
dashed lines. If the screen displays “Service
Tire Pressure Monitoring System”, the
vehicle needs to be taken to a dealer for
service.

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CHEVROLET SUBURBAN 2021 User Guide Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/-
Mexico-13690484) - 2021 - crc - 8/17/20
424 Index
Front Pedestrian Braking (FPB)System . . . . . . . . . . . . . . . . . . . . . .

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/-
Mexico-13690484) - 2021 - crc - 8/17/20
424 Index
Front Pedestrian Braking (FPB)System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 270
Front Seats Heated and Ventilated . . . . . . . . . . . . . . . . . . 43
Fuel Additives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278
Dynamic Management . . . . . . . . . . . . . . . . . 231
Economy, Driving for Better . . . . . . . . . . . 213
Filling a Portable Fuel Container . . . . . . . 279
Filling the Tank . . . . . . . . . . . . . . . . . . . . . . . . 278
Foreign Countries . . . . . . . . . . . . . . . . . . . . . . 278
Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Low Fuel Warning Light . . . . . . . . . . . . . . . . 117
Prohibited Fuels . . . . . . . . . . . . . . . . . . . . . . . 277
Recommended . . . . . . . . . . . . . . . . . . . . . . . . . 277
Top Tier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 276
Full-Size Spare Tire . . . . . . . . . . . . . . . . . . . . . . . 368
Fuses Engine Compartment Fuse Block . . . . . . . 333
Fuses and Circuit Breakers . . . . . . . . . . . . . 333
Instrument Panel Fuse Block . . . . . . . . . . . 337
Rear Compartment Fuse Block . . . . . . . . . 339
G
Garage Door Opener . . . . . . . . . . . . . . . . . . . . . 129Programming . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Gas Strut(s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 330 Gauges
Engine Coolant Temperature . . . . . . . . . . . 107
Engine Oil Pressure . . . . . . . . . . . . . . . . . . . . 106
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Speedometer . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Tachometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Trip Odometer . . . . . . . . . . . . . . . . . . . . . . . . . 105
Voltmeter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Warning Lights and Indicators . . . . . . . . . 101
General Information
Service and Maintenance . . . . . . . . . . . . . . 385
Towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 280
Vehicle Care . . . . . . . . . . . . . . . . . . . . . . . . . . . 309
Glass Replacement . . . . . . . . . . . . . . . . . . . . . . . 330
Global Positioning System (GPS) . . . . . . . . . .174
Glove Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
GM Mobility Reimbursement Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 404
Guidance Problems with the Route . . . . . . . . . . . . . . . 175
H
Hazard Warning Flashers . . . . . . . . . . . . . . . . 136
HD Radio Technology . . . . . . . . . . . . . . . . . . . . 149
Head Restraints . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Head-up Display . . . . . . . . . . . . . . . . . . . . . . . . . . 121 Headlamps
Aiming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 331
Automatic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Bulb Replacement . . . . . . . . . . . . . . . . . . . . . . 331
Daytime Running Lamps (DRL) . . . . . . . . . 135
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
High-Beam On Light . . . . . . . . . . . . . . . . . . . . 118
High/Low Beam Changer . . . . . . . . . . . . . . 135
Lamps On Reminder . . . . . . . . . . . . . . . . . . . . 118
Heated Rear Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Steering Wheel . . . . . . . . . . . . . . . . . . . . . . . . . 94
Heated and Ventilated Front Seats . . . . . . . 43
Heated Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204, 207
High-Beam On Light . . . . . . . . . . . . . . . . . . . . . . 118
High-Speed Operation . . . . . . . . . . . . . . . . . . . 347
Hill and Mountain Roads . . . . . . . . . . . . . . . . 220
Hill Descent Control (HDC) . . . . . . . . . . . . . . . 244
Hill Descent Control Light . . . . . . . . . . . . . . . . . 113
Hill Start Assist (HSA) . . . . . . . . . . . . . . . . . . . . 242
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 310
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
How to Wear Seat Belts Properly . . . . . . . . . .53
HVAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204, 207

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CHEVROLET SUBURBAN 2021 User Guide Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/-
Mexico-13690484) - 2021 - crc - 8/17/20
Index 425
I
If the System Needs Service . . . . . . . . . . . . . . 175
Ignition Positions

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/-
Mexico-13690484) - 2021 - crc - 8/17/20
Index 425
I
If the System Needs Service . . . . . . . . . . . . . . 175
Ignition Positions . . . . . . . . . . . . . . . . . . . . . . . . 226
Immobilizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
IndicatorPedestrian Ahead . . . . . . . . . . . . . . . . . . . . . . . 114
Vehicle Ahead . . . . . . . . . . . . . . . . . . . . . . . . . . 113
Infants and Young Children, Restraints . . . . . 71
Information Publication Ordering . . . . . . . . . . . . . . . . . . . 408
Infotainment System . . . . . . . . . . . . . . . . . . . . . 411 Rear Seat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156
Instrument Cluster . . . . . . . . . . . . . . . . . . . . . . . 102
Instrument Panel Storage Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
Instrument Panel Overview . . . . . . . . . . . . . . . . 4
Interior Rearview Mirrors . . . . . . . . . . . . . . . . . 30
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . .1, 141
J
Jump Starting - North America . . . . . . . . . . . 369
K
Keyless Entry Remote (RKE) System . . . . . . . . . . . . . . . . . . . . 8
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
L
Labeling, Tire Sidewall . . . . . . . . . . . . . . . . . . . 343 Lamps
Daytime Running (DRL) . . . . . . . . . . . . . . . . 135
Dome . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
Exterior Controls . . . . . . . . . . . . . . . . . . . . . . . 133
Exterior Lamps Off Reminder . . . . . . . . . . 135
Exterior Lighting Battery Saver . . . . . . . . 140
Malfunction Indicator (Check
Engine) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
On Reminder . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
Reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
Lane Change Alert (LCA) . . . . . . . . . . . . . . . . . 272
Lane Keep Assist (LKA) . . . . . . . . . . . . . . . . . . . 275
Lane Keep Assist Light . . . . . . . . . . . . . . . . . . . . 113
Lap-Shoulder Belt . . . . . . . . . . . . . . . . . . . . . . . . . .55
LATCH System Replacing Parts after a Crash . . . . . . . . . . . 82
LATCH, Lower Anchors and Tethers for Children . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
LED Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 331
Liftgate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Lighting Entry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
Exit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
Illumination Control . . . . . . . . . . . . . . . . . . . . 137
LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 331
Lights Airbag Readiness . . . . . . . . . . . . . . . . . . . . . . 108 Lights (cont'd)
Antilock Brake System (ABS)
Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
Brake System Warning . . . . . . . . . . . . . . . . . 111
Charging System . . . . . . . . . . . . . . . . . . . . . . 110
Check Engine (Malfunction Indicator) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
Cruise Control . . . . . . . . . . . . . . . . . . . . . . . . . . 118
Door Ajar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
Driver Mode Control . . . . . . . . . . . . . . . . . . . . 115
Electric Parking Brake . . . . . . . . . . . . . . . . . . . 112
Electronic Stability Control (ESC), Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Engine Coolant Temperature Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Engine Oil Pressure . . . . . . . . . . . . . . . . . . . . . 117
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Four Corner Air Suspension . . . . . . . . . . . . . 116
Four-Wheel-Drive . . . . . . . . . . . . . . . . . . . . . . . 113
High-Beam On . . . . . . . . . . . . . . . . . . . . . . . . . . 118
High/Low Beam Changer . . . . . . . . . . . . . . 135
Hill Descent Control . . . . . . . . . . . . . . . . . . . . 113
Lane Keep Assist . . . . . . . . . . . . . . . . . . . . . . . . 113
Low Fuel Warning . . . . . . . . . . . . . . . . . . . . . . 117
Seat Belt Reminders . . . . . . . . . . . . . . . . . . . 108
Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
Service Electric Parking Brake . . . . . . . . . . . 112
Tire Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116

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CHEVROLET SUBURBAN 2021 User Guide Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/-
Mexico-13690484) - 2021 - crc - 8/17/20
426 Index
Lights (cont'd)Traction Off . . . . . . . . . . . . . . . . . . . . . . . . .

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/-
Mexico-13690484) - 2021 - crc - 8/17/20
426 Index
Lights (cont'd)Traction Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
Lock Steering Column . . . . . . . . . . . . . . . . . . . . . . . . 26
Locking Rear Axle . . . . . . . . . . . . . . . . . . . . . . . . 248
Locks Automatic Door . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Delayed Locking . . . . . . . . . . . . . . . . . . . . . . . . . 17
Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Lockout Protection . . . . . . . . . . . . . . . . . . . . . . . 17
Power Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Loss of Control . . . . . . . . . . . . . . . . . . . . . . . . . . 216
Low Fuel Warning Light . . . . . . . . . . . . . . . . . . 117
Low-Profile Tires . . . . . . . . . . . . . . . . . . . . . . . . . 342
Lower Anchors and Tethers for Children (LATCH System) . . . . . . . . . . . . . . . . 76
Lumbar Adjustment . . . . . . . . . . . . . . . . . . . . . . . 39 Front Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
M
Magnetic Ride Control . . . . . . . . . . . . . . . . . . . 247
MaintenanceRecords . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 397
Maintenance and Care Additional . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 392
Maintenance Schedule . . . . . . . . . . . . . . . . . . . 386 Maintenance Schedule (cont'd)
Recommended Fluids and
Lubricants . . . . . . . . . . . . . . . . . . . . . . . . . . . . 395
Transfer Case . . . . . . . . . . . . . . . . . . . . . . . . . . 236
Malfunction Indicator Lamp . . . . . . . . . . . . . . .110
Manual Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . 235
Map Data Updates . . . . . . . . . . . . . . . . . . . . . . . . 175
Maps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
Media Avoiding Untrusted Devices . . . . . . . . . . . . . 151
Memory Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Messages Engine Power . . . . . . . . . . . . . . . . . . . . . . . . . . 124
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
Vehicle Speed . . . . . . . . . . . . . . . . . . . . . . . . . . 124
Mirror
Rear Camera . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Mirrors Automatic Dimming . . . . . . . . . . . . . . . . . . . . 29
Automatic Dimming Rearview . . . . . . . . . . 30
Convex . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Folding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Heated . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Manual Rearview . . . . . . . . . . . . . . . . . . . . . . . 30
Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Tilt in Reverse . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Mirrors, Interior Rearview . . . . . . . . . . . . . . . . . 30
Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245 Mode (cont'd)
Driver Control . . . . . . . . . . . . . . . . . . . . . . . . . 245
Monitor System, Tire Pressure . . . . . . . . . . . 348
Multi-band Antenna . . . . . . . . . . . . . . . . . . . . . . 151
N
Navigation Connected Services . . . . . . . . . . . . . . . . . . . . 417
Destination . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168
Using the System . . . . . . . . . . . . . . . . . . . . . . 164
Navigation Symbols . . . . . . . . . . . . . . . . . . . . . 167
Net, Convenience . . . . . . . . . . . . . . . . . . . . . . . . . 92
New Vehicle Break-In . . . . . . . . . . . . . . . . . . . . 226
O
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105 Trip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Off-Road . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 216
Driving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 216
Recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215
Oil Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 315
Engine Oil Life System . . . . . . . . . . . . . . . . . 316
Engine Oil Pressure Gauge . . . . . . . . . . . . . 106
Pressure Light . . . . . . . . . . . . . . . . . . . . . . . . . . 117
Older Children, Restraints . . . . . . . . . . . . . . . . . 70
Online Owner Center . . . . . . . . . . . . . . . . . . . . 403
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 411
OnStar Additional Information . . . . . . . . . . . .413

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CHEVROLET SUBURBAN 2021 User Guide Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/-
Mexico-13690484) - 2021 - crc - 8/17/20
Index 431
Warning (cont'd)Caution and Danger . . . . . . . . . . . . . . . . . . . . .

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