2021 CHEVROLET SUBURBAN four wheel drive

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13690484) - 2021 - CRC - 8/21/20
6 Introduction
19.Wireless Charging 099.
20. ENGINE START/STOP. See Ignition
Positions 0226.
21. Steering Wheel Controls 0144.
22. Horn 095.
23. Hood Release. See Hood0310.
24. Steering Wheel Adjustment 094.
25. Cruise Control 0251.
Adaptive Cruise Control (Advanced) 0253
(If Equipped).
Forward Collision Alert (FCA) System
0 267 (If Equipped).
Heated Steering Wheel 094 (If
Equipped).
26. Trailer Brake Control Panel (If Equipped). SeeTowing Equipment 0287. 27. Data Link Connector (DLC) (Out of View).
SeeMalfunction Indicator Lamp (Check
Engine Light) 0110.
28. Exterior Lamp Controls 0133.
Instrument Panel Illumination Control
0 137.
29. Driver Mode Control 0245.
Automatic Transfer Case Knob (If
Equipped). See Four-Wheel Drive 0236.
Four Corner Air Suspension System 0248
(If Equipped).

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13690484) - 2021 - crc - 8/17/20
Instruments and Controls 93
Instruments and Controls
Controls
Steering Wheel Adjustment . . . . . . . . . . . . 94
Steering Wheel Controls . . . . . . . . . . . . . . . 94
Heated Steering Wheel . . . . . . . . . . . . . . . . . 94
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Windshield Wiper/Washer . . . . . . . . . . . . . . 95
Rear Window Wiper/Washer . . . . . . . . . . . 96
Compass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Power Outlets . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Wireless Charging . . . . . . . . . . . . . . . . . . . . . . 99
Warning Lights, Gauges, and Indicators
Warning Lights, Gauges, andIndicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Instrument Cluster . . . . . . . . . . . . . . . . . . . . . 102
Speedometer . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Trip Odometer . . . . . . . . . . . . . . . . . . . . . . . . . 105
Tachometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Fuel Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Engine Oil Pressure Gauge . . . . . . . . . . . . 106
Engine Coolant Temperature Gauge . . . 107
Voltmeter Gauge . . . . . . . . . . . . . . . . . . . . . . 107
Seat Belt Reminders . . . . . . . . . . . . . . . . . . . 108
Airbag Readiness Light . . . . . . . . . . . . . . . . 108
Passenger Airbag Status Indicator . . . . . 109
Charging System Light . . . . . . . . . . . . . . . . . 110 Malfunction Indicator Lamp (Check
Engine Light) . . . . . . . . . . . . . . . . . . . . . . . . . 110
Brake System Warning Light . . . . . . . . . . . 111
Electric Parking Brake Light . . . . . . . . . . . . 112
Service Electric Parking Brake Light . . . . . 112
Antilock Brake System (ABS) Warning Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
Four-Wheel-Drive Light . . . . . . . . . . . . . . . . . 113
Hill Descent Control Light . . . . . . . . . . . . . . 113
Lane Keep Assist (LKA) Light . . . . . . . . . . . 113
Vehicle Ahead Indicator . . . . . . . . . . . . . . . . 113
Pedestrian Ahead Indicator . . . . . . . . . . . . . 114
Traction Off Light . . . . . . . . . . . . . . . . . . . . . . 114
Traction Control System (TCS)/Electronic Stability Control Light . . . . . . . . . . . . . . . . 114
Electronic Stability Control (ESC) Off Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Engine Coolant Temperature Warning Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Driver Mode Control Light . . . . . . . . . . . . . 115
Four Corner Air Suspension Light . . . . . . 116
Tire Pressure Light . . . . . . . . . . . . . . . . . . . . . 116
Engine Oil Pressure Light (Uplevel Cluster) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
Low Fuel Warning Light . . . . . . . . . . . . . . . . 117
Security Light . . . . . . . . . . . . . . . . . . . . . . . . . . 117
High-Beam On Light . . . . . . . . . . . . . . . . . . . 118
Lamps On Reminder . . . . . . . . . . . . . . . . . . . 118
Cruise Control Light . . . . . . . . . . . . . . . . . . . . 118
Door Ajar Light . . . . . . . . . . . . . . . . . . . . . . . . 118
Information Displays
Driver Information Center (DIC) . . . . . . . . 119
Head-Up Display (HUD) . . . . . . . . . . . . . . . . 121
Vehicle Messages
Vehicle Messages . . . . . . . . . . . . . . . . . . . . . . 124
Engine Power Messages . . . . . . . . . . . . . . . 124
Vehicle Speed Messages . . . . . . . . . . . . . . . 124
Vehicle Personalization
Vehicle Personalization . . . . . . . . . . . . . . . . 124
Universal Remote System
Universal Remote System . . . . . . . . . . . . . 129
Universal Remote System Programming . . . . . . . . . . . . . . . . . . . . . . . . 129
Universal Remote System Operation . . . 131

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13690484) - 2021 - crc - 8/17/20
Instruments and Controls 113
If the ABS warning light stays on, or comes
on again while driving, the vehicle needs
service. A chime may also sound when the
light stays on.
If the ABS warning light is the only light on,
the vehicle has regular brakes, but ABS is
not functioning.
If both the ABS warning light and the brake
system warning light are on, ABS is not
functioning and there is a problem with the
regular brakes. See your dealer for service.
SeeBrake System Warning Light 0111.
Four-Wheel-Drive Light
Auto Mode Shown, Other Modes Similar
If equipped, the four-wheel-drive light
displays what mode the vehicle is in. The
light will show each mode: 2WD, 4HI, AUTO
(all transfer cases); 4LOW and N (two-speed
transfer case only). The light will flash when a shift is in
progress. Once the shift is complete the
light will be steady.
If the light turns amber, there may be a
malfunction with the four-wheel-drive
system. See your dealer.
See
Four-Wheel Drive 0236.
Hill Descent Control Light
If equipped, the Hill Descent Control light
comes on when the system is ready for use.
When the light flashes, the system is active.
See Hill Descent Control (HDC) 0244.
Lane Keep Assist (LKA) Light
After the vehicle is started, this light turns
off and stays off if LKA has not been turned
on or is unavailable.
If equipped, this light is white if LKA is
turned on, but not ready to assist.
This light is green if LKA is turned on and is
ready to assist.
LKA may assist by gently turning the
steering wheel if the vehicle approaches a
detected lane marking. The LKA light is
amber when assisting.
This light flashes amber as a Lane Departure
Warning (LDW) alert, to indicate that the
lane marking has been crossed.
LKA will not assist or alert if the turn signal
is active in the direction of lane departure,
or if LKA detects that you are accelerating,
braking or actively steering.
See Lane Keep Assist (LKA) 0275.
Vehicle Ahead Indicator

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13690484) - 2021 - crc - 8/17/20
Instruments and Controls 121
TRAILER GAIN shows the trailer gain setting.
This setting can be adjusted from 0.0 to 10.0
with either a trailer connected or
disconnected.
OUTPUT shows the power output to the
trailer any time a trailer with electric brakes
is connected. Output is displayed as a bar
graph. Dotted lines may appear in the
OUTPUT display if a trailer is not connected.
Off Road :If equipped, displays vehicle pitch
and roll information, road wheel angle, and
four-wheel drive (4WD) status.
Follow Distance : If equipped, the current
follow time to the vehicle ahead is displayed
as a time value on this page.
Driver Assistance : If equipped, shows
information for Lane Keep Assist (LKA) and
Forward Collision Alert (FCA).
Info Page Options : Scroll to choose which
info pages appear on the DIC. Press the
thumbwheel to select or deselect.
Blank Page : Shows no information.Head-Up Display (HUD)
{Warning
If the HUD image is too bright or too
high in your field of view, it may take
you more time to see things you need to
see when it is dark outside. Be sure to
keep the HUD image dim and placed low
in your field of view.
If equipped with HUD, some information
about the operation of the vehicle is
projected onto the windshield. The image is
projected through the HUD lens on top of
the instrument panel. The information
appears as an image focused out toward the
front of the vehicle.
Caution
If you try to use the HUD image as a
parking aid, you may misjudge the
distance and damage your vehicle. Do not
use the HUD image as a parking aid.
The HUD information can be displayed in
various languages. The speedometer reading
and other numerical values can be displayed
in either English or metric units. The language selection is changed through
the radio, and the units of measurement is
changed through the instrument cluster. See
Settings
0187 and “Options” under
Instrument Cluster 0102.
HUD Display on the Windshield
Depending on how the vehicle is equipped,
the HUD may display some of the following
vehicle information and vehicle messages or
alerts:
.Speed
.Audio
.Phone
.Navigation
.Driver Assistance Features
.Vehicle Messages

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13690484) - 2021 - crc - 8/17/20
122 Instruments and Controls
Some vehicle messages or alerts displayed in
the HUD may be cleared by using the
steering wheel controls.
The HUD control is to the left of the
steering wheel.
To adjust the HUD image:1. Adjust the driver seat.
2. Start the engine.
3. Use the following settings to adjust the HUD.
$:Press or pull to center the HUD image.
The HUD image can only be adjusted up and
down, not side to side.
!: Press to select the display view. Each
press will change the display view.
D: Pull and hold to brighten the display.
Press and hold to dim the display. Continue
to hold to turn the display off.
The HUD image will automatically dim and
brighten to compensate for outside lighting.
Use
Dto adjust as needed.
The HUD image can temporarily light up
depending on the angle and position of
sunlight on the HUD display. This is normal.
Polarized sunglasses could make the HUD
image harder to see.
Head-Up Display (HUD) Rotation Option
If equipped, this feature under the Options
menu of the instrument cluster allows for
adjusting the angle of the HUD image and
changing or turning off the Speed
Limit Sign.
HUD Rotation: Press the thumbwheel while
Adjust Rotation is highlighted to enter
Adjust Mode. Scroll to adjust the angle of
the HUD display. Press the thumbwheel to
confirm and save the setting. This feature
may only be available in P (Park). Speed Limit Style Adjustment
If equipped, the speed limit style can be
changed to a speed limit bar or speed limit
sign from the Options menu in the
instrument cluster. Press the thumbwheel
while Speed Limit Style is highlighted to
change the speed sign style or to turn it off.
HUD Views
There are four views in the HUD. Some
vehicle information and vehicle messages or
alerts may be displayed in any view.
English Shown, Metric Similar
Speed View : This displays the speedometer
reading in English or metric units, and speed
limit. Some information only appears on
vehicles that have these features, and when
they are active.

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13690484) - 2021 - crc - 8/17/20
Instruments and Controls 123
English Shown, Metric Similar
Active Safety View : This displays the speed
view along with a driver assistance graphic
on the left. Driver assistance graphics show
your vehicle, vehicle ahead, gap setting, and
lane status information. In addition to driver
assistance graphics, pedestrian advisory and
trailer sway indicators will be displayed.
English Shown, Metric Similar Navigation/Active OnStar View :
This
displays the speed view along with
indicators for vehicle ahead, Lane Departure
Warning/Lane Keep Assist, trailer sway, and
pedestrian advisory. Turn-by-Turn navigation
information is shown during active route.
The compass heading is displayed when
navigation routing is not active.
Navigation Turn-by-Turn Alerts shown in the
instrument cluster may also be displayed in
any HUD view.
English Shown, Metric Similar
Off Road View : This displays the speed
view along with indicators for vehicle ahead,
Lane Departure Warning/Lane Keep Assist,
trailer sway, four-wheel drive status, and
pedestrian advisory. Off-road information
such as pitch angle, steering angle, and
rolling angle is also shown.
Care of the HUD
Clean the inside of the windshield to remove
any dirt or film that could reduce the
sharpness or clarity of the HUD image.
Clean the HUD lens with a soft cloth
sprayed with glass cleaner. Wipe the lens
gently, then dry it.
HUD Troubleshooting
Check that:
.Nothing is covering the HUD lens.
.The HUD brightness setting is not too
dim or too bright.
.The HUD is adjusted to the proper height.
.Polarized sunglasses are not worn.
.The windshield and HUD lens are clean.
If the HUD image is not correct, contact
your dealer.
The windshield is part of the HUD system.
See Windshield Replacement 0330.

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13690484) - 2021 - crc - 8/17/20
Instruments and Controls 129
Deploy Running Boards
This feature moves the running boards to a
deployed position so they can be used with
the doors closed.
Touch Off or Deploy.
Seating Position
Touch and the following may display:
.Seat Entry Memory
.Seat Exit Memory
Seat Entry Memory
This feature automatically recalls the
previously stored 1 or 2 button positions
when the ignition is changed from off to on
or ACC/ACCESSORY. See Memory Seats040.
Touch Off or On.
Seat Exit Memory
This feature automatically recalls the
previously stored exit button position when
the ignition is changed from on or ACC/
ACCESSORY to off and the driver door is
open. See Memory Seats 040.
Touch Off or On.
Suspension
Touch and the following may display:
.Service Mode
.Alignment Mode
Service Mode
This feature disables the air suspension
system and is used to prevent unintended
raising or lowering of the suspension..
Touch Off or On.
Alignment Mode
This feature will optimize the vehicle height
to provide the most accurate wheel
alignment.
Touch Off or On.
Teen Driver
See “Teen Driver” underSettings 0187.
Valet Mode
This will lock the infotainment system and
steering wheel controls. It may also limit
access to vehicle storage locations,
if equipped.
To enable valet mode:
1. Enter a four-digit code on the keypad.
2. Select Enter to go to the confirmation screen.
3. Re-enter the four-digit code. Touch Lock or Unlock to lock or unlock the
system. Touch Back to go back to the
previous menu.
Universal Remote System
See
Radio Frequency Statement 0409.
Universal Remote System
Programming
If equipped, these buttons are in the
overhead console.
This system can replace up to three remote
control transmitters used to activate devices
such as garage door openers, security

Chevrolet Tahoe/Suburban Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-13690484) - 2021 - crc - 8/17/20
212 Driving and Operating
Driving and Operating
Driving Information
Driving for Better Fuel Economy . . . . . . . 213
Distracted Driving . . . . . . . . . . . . . . . . . . . . . . 213
Defensive Driving . . . . . . . . . . . . . . . . . . . . . . 214
Impaired Driving . . . . . . . . . . . . . . . . . . . . . . . 214
Control of a Vehicle . . . . . . . . . . . . . . . . . . . 214
Braking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 214
Steering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215
Off-Road Recovery . . . . . . . . . . . . . . . . . . . . . 215
Loss of Control . . . . . . . . . . . . . . . . . . . . . . . . 216
Off-Road Driving . . . . . . . . . . . . . . . . . . . . . . . 216
Driving on Wet Roads . . . . . . . . . . . . . . . . . 219
Hill and Mountain Roads . . . . . . . . . . . . . . 220
Winter Driving . . . . . . . . . . . . . . . . . . . . . . . . . 221
If the Vehicle Is Stuck . . . . . . . . . . . . . . . . . . 221
Vehicle Load Limits . . . . . . . . . . . . . . . . . . . . 222
Starting and Operating
New Vehicle Break-In . . . . . . . . . . . . . . . . . . 226
Ignition Positions . . . . . . . . . . . . . . . . . . . . . . 226
Starting the Engine . . . . . . . . . . . . . . . . . . . . 228
Stop/Start System . . . . . . . . . . . . . . . . . . . . . 229
Retained Accessory Power (RAP) . . . . . . . 229
Shifting Into Park . . . . . . . . . . . . . . . . . . . . . 230
Shifting out of Park . . . . . . . . . . . . . . . . . . . 230
Parking over Things That Burn . . . . . . . . . 231
Dynamic Fuel Management . . . . . . . . . . . . 231
Extended Parking . . . . . . . . . . . . . . . . . . . . . . 231
Engine Exhaust
Engine Exhaust . . . . . . . . . . . . . . . . . . . . . . . . 231
Running the Vehicle While Parked . . . . . 232
Automatic Transmission
Automatic Transmission . . . . . . . . . . . . . . . 232
Manual Mode . . . . . . . . . . . . . . . . . . . . . . . . . 235
Tow/Haul Mode . . . . . . . . . . . . . . . . . . . . . . . 235
Drive Systems
Four-Wheel Drive . . . . . . . . . . . . . . . . . . . . . . 236
Brakes
Electric Brake Boost . . . . . . . . . . . . . . . . . . . 240
Antilock Brake System (ABS) . . . . . . . . . . 240
Electric Parking Brake . . . . . . . . . . . . . . . . . 240
Brake Assist . . . . . . . . . . . . . . . . . . . . . . . . . . . 241
Hill Start Assist (HSA) . . . . . . . . . . . . . . . . . 242
Ride Control Systems
Traction Control/Electronic StabilityControl . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242
Hill Descent Control (HDC) . . . . . . . . . . . . 244
Driver Mode Control . . . . . . . . . . . . . . . . . . . 245
Magnetic Ride Control . . . . . . . . . . . . . . . . . 247
Locking Rear Axle . . . . . . . . . . . . . . . . . . . . . 248
Four Corner Air Suspension System . . . 248
Cruise Control
Cruise Control . . . . . . . . . . . . . . . . . . . . . . . . . . 251
Adaptive Cruise Control (Advanced) . . . . 253
Driver Assistance Systems
Driver Assistance Systems . . . . . . . . . . . . . 260
Assistance Systems for Parking or Backing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262
Rear Pedestrian Alert . . . . . . . . . . . . . . . . . . 266
Assistance Systems for Driving . . . . . . . . 267
Forward Collision Alert (FCA) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 267
Automatic Emergency Braking (AEB) . . . . . . . . . . . . . . . . . . . . . . . . 269
Front Pedestrian Braking (FPB) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 270
Side Blind Zone Alert (SBZA) . . . . . . . . . . . 272
Lane Change Alert (LCA) . . . . . . . . . . . . . . . 272
Lane Keep Assist (LKA) . . . . . . . . . . . . . . . . . 275
Fuel
Top Tier Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . 276
Recommended Fuel (5.3L Engine) . . . . . . 277
Recommended Fuel (6.2L Engine) . . . . . . 277
Prohibited Fuels . . . . . . . . . . . . . . . . . . . . . . . 277
Fuels in Foreign Countries . . . . . . . . . . . . . 278
Fuel Additives . . . . . . . . . . . . . . . . . . . . . . . . . 278
Filling the Tank . . . . . . . . . . . . . . . . . . . . . . . . 278
Filling a Portable Fuel Container . . . . . . . 279
Trailer Towing
General Towing Information . . . . . . . . . . 280
Driving Characteristics and Towing Tips . . . . . . . . . . . . . . . . . . . . . . . . . 280
Trailer Towing . . . . . . . . . . . . . . . . . . . . . . . . . 284