ECO mode CHEVROLET SILVERADO 2500 2023 Owner's Manual

Chevrolet Silverado 2500 HD/3500 HD Owner Manual (GMNA-Localizing-U.
S./Canada/Mexico-15546003) - 2022 - CRC - 5/5/21
178 Infotainment System
Voice Recognition for Navigation (If
Equipped)
“Navigation”:Begin a dialog to enter
specific destination information.
“Navigation Commands” :Begin a dialog to
enter specific destination information.
“Address” :Begin a dialog to enter a
specific destination address, which includes
the entire address consisting of the house
number, street name, city, state/province,
and country. Do not include the ZIP code.
“Place of Interest” :Begin a dialog to enter
a destination Place of Interest category or
major brand name.
The name must be precisely spoken.
Nicknames or short names for the
businesses will not likely be found. Lesser
known businesses might have to be located
by category, such as fast food, hotels,
or banks.
“Navigate to Contact” :Begin a dialog to
enter a specific destination contact name.
“Cancel Route” :End route guidance.
“Take Me Home” :Create a route to a
stored home location.
Voice Recognition for the Phone
“Call ” :Initiate a call to a
stored contact. The command may include
location if the contact has location numbers
stored.
“Call At Home,” “At Work,” “On
Mobile,” or“On Other” :Initiate a call to a
stored contact and location at home, at
work, on mobile device, or on another
phone.
“Call ” :Initiate a call
to a cell phone number of seven digits, 10
digits, or three digit emergency numbers.
“Pair Phone” :Begin the Bluetooth pairing
process. Follow the instructions on the
infotainment display.
“Redial” :Initiate a call to the last dialed
number.
“Switch Phone” :Select a different
connected cell phone for outgoing calls.
“Voice Keypad” :Begin a dialog to enter
special numbers like international numbers.
The numbers can be entered in groups of
digits with each group of digits being
repeated back by the system. If the group
of digits is not correct, the command
“Delete” will remove the last group of digits and allow them to be re-entered. Once the
entire number has been entered, the
command
“Call”will start dialing the
number.
Phone Assistant Voice Recognition
Press and holdgon the steering wheel
controls to pass through and launch Google
phone assistant or Siri.
For the low radio, whether connected by
Bluetooth or phone projection, the only
available voice recognition is either Siri
(iPhone) or the Google Assistant (Android).
Phone
Bluetooth (Overview)
The Bluetooth-capable system can interact
with many mobile devices, allowing:
.Placement and receipt of calls in a
hands-free mode.
.Sharing of the device’s address book or
contact list with the vehicle.
To minimize driver distraction, before
driving, and with the vehicle parked:
.Become familiar with the features of the
mobile device. Organize the phone book
and contact lists clearly and delete

Chevrolet Silverado 2500 HD/3500 HD Owner Manual (GMNA-Localizing-U.
S./Canada/Mexico-15546003) - 2022 - CRC - 5/5/21
Infotainment System 181
open the phone settings menu. If a cell
phone is enabled as a Secondary Phone, it
can connect simultaneously alongside
another Bluetooth mobile device. In doing
so, the Secondary Phone will be labeled as
Incoming Calls. This means the mobile
device can only receive calls. The Address
Book of a Secondary Phone will not be
available and hands-free outgoing calls
cannot be placed using this cell phone.
If needed, touch the Secondary Phone while
in the Phones list to swap it into the
Outgoing and Incoming role. This role makes
it possible to place outgoing calls from the
Contacts and Recents list.
Listing All Paired and Connected Phones1. Touch the Phone icon on the Home Page or the phone icon on the shortcut tray
near the bottom of the display.
2. Touch Phones.
Disconnecting a Connected Phone 1. Touch the Phone icon on the Home Page.
2. Touch Phones.
3. Touch the information icon next to the connected cell phone or mobile device to
show the cell phone’s or mobile device’s
information display. 4. Touch Disconnect.
Deleting a Paired Phone 1. Touch the Phone icon on the Home Page or the phone icon on the shortcut tray
near the bottom of the display.
2. Touch Phones.
3. Touch the information icon next to the connected cell phone to display the cell
phone’s or mobile device’s information
display.
4. Touch Forget Device.
Linking to a Different Phone
To link to a different cell phone, the new
cell phone must be in the vehicle and paired
to the Bluetooth system. 1. Touch the Phone icon on the Home Page or the phone icon on the shortcut tray
near the bottom of the display.
2. Touch Phones.
3. Touch the new cell phone to link to from the not connected phone list. See “First
to Connect Paired Phones” and
“Secondary Phone” previously in this
section.Switching to Handset or
Handsfree Mode
To switch between handset or
handsfree mode:
.While the active call is hands-free, touch
the Handset option to switch to the
handset mode.
The mute icon will not be available or
functional while Handset mode is active.
.While the active call is on the handset,
touch the Handset option to switch to the
hands-free mode.
Making a Call Using Contacts and Recent
Calls
Calls can be made through the Bluetooth
system using personal cell phone contact
information for all cell phones that support
the Phone Book feature. Become familiar
with the cell phone settings and operation.
Verify the cell phone supports this feature.
The Contacts menu accesses the phone book
stored in the cell phone.
The Recents menu accesses the recents call
list from your cell phone.
To make a call using the Contacts menu:
1. Touch the Phone icon on the Home Page.

Chevrolet Silverado 2500 HD/3500 HD Owner Manual (GMNA-Localizing-U.
S./Canada/Mexico-15546003) - 2022 - CRC - 5/5/21
186 Infotainment System
recognition system. Touch Off to prevent
the sharing and possible recording of your
voice commands with this system. This
may limit the system’s ability to
understand your voice commands and
may disable some features.
.Types: This setting lists all
Android-defined as dangerous permissions
currently used by the infotainment
system, the number of applications that
have requested this permission, and the
number of applications that are allowed
to use this permission.
.Used By Applications: This setting lists all
applications that are requested or are
using Android-defined as dangerous
permissions. Only requested and active
permissions are shown.
Display
Touch and the following may display:
.Mode: This adjusts the appearance of the
navigation map view and any
downloaded apps optimized for day or
night time conditions. Set to Auto for the
display to automatically adjust based on
bright/dark conditions.
Touch Auto, Day, or Night to adjust the
display.
.Calibrate Touchscreen: Touch to calibrate
the infotainment display and follow the
prompts.
.Turn Display Off: Touch to turn the
display off. Touch anywhere on the
infotainment display or press any
infotainment control on the center stack
again to turn the display on.
Sounds
Touch and the following may display:
.Maximum Startup Volume: This feature
adjusts the maximum volume of the
infotainment system when you start your
vehicle. To set the maximum startup
volume, touch the controls on the
infotainment display to increase or
decrease.
.Audio Cues: This feature determines if
sounds play when the infotainment
system starts up and shuts down. This
feature can be turned off or on.
.Set Audio Cue Volume: This setting
controls the volume of Audio Cues played
on startup and shut down. Touch the
controls on the infotainment display to
increase or decrease.
.Audible Touch Feedback: This setting
determines if a sound plays when
touching the infotainment display or
radio controls. This feature can be turned
off or on.
Voice
Touch and the following may display:
.Confirm More/Less: This setting specifies
how often the voice recognition system
confirms commands. Touch Confirm More
to have the system check with you more
often before acting on your commands.
.Prompt Length: This setting specifies the
amount of detail the voice recognition
system provides when giving you
feedback. Touch Auto to have the system
automatically adjust to your speech
habits. Touch Informative, Short, or Auto.
.Audio Feedback Speed: Touch Slow,
Medium, or Fast to adjust how quickly
the voice recognition system speaks.
.Friendly Prompts: This setting adjusts the
formality of voice prompts. Touch Off for
shorter prompts. Touch On to hear
prompts with more personality. Touch
Auto to have the prompt match your
command style.

Chevrolet Silverado 2500 HD/3500 HD Owner Manual (GMNA-Localizing-U.
S./Canada/Mexico-15546003) - 2022 - CRC - 5/5/21
Infotainment System 187
.Tutorial Mode: Touch Off or On to
provide tutorial feedback on the display.
.Allow Prompt Interruptions: This setting
controls whether voice commands can be
spoken before voice prompts finish. Turn
this on to speak commands without
hearing the full prompt. Speaking while
the prompt is still playing will
immediately stop playing the current
prompt and recognize your command.
Background noise may cause accidental
interruptions. Touch Off or On.
Favorites
Touch and the following may display:
.Manage Favorites: Touch to display a list
of Audio, Phone, and Navigation favorites.
Favorites can be moved, renamed,
or deleted.
To move, touch and hold the favorite, and
then drag up or down to rearrange the
position.
.Set Number of Audio Favorites: Touch to
select how many favorites pages can be
viewed from the audio application. The
Auto setting will automatically adjust this
number based on the number of favorites
you have saved. Touch Auto, 5, 10, 15, 20,
25, 30, 35, or 40. Updates
If equipped, the vehicle can download and
install select software updates over a
wireless connection. The system will prompt
for certain updates to be downloaded and
installed. There is also an option to check
for updates manually.
To manually check for updates, touch
Settings on the Home Page and select the
System tab. Go to the Vehicle Software
section and touch Updates. Follow the
on-screen prompts. The steps to check for,
download, and install updates may vary by
vehicle.
The vehicle can be used normally during the
software download. Once the download is
complete, there may be a prompt to accept
the installation of the update upon the next
ignition cycle or the next time the vehicle is
shifted into P (Park). For most updates, the
vehicle will be disabled and cannot be driven
during the installation. The system will
deliver messages indicating success or error
during and after the download and
installation processes.
Downloading Over-the-Air vehicle software
updates requires Internet connectivity, which
can be accessed through the vehicle’s
built-in 4G LTE connection, if equipped and active. If required, data plans are provided
by a third party. Optionally, a secure Wi-Fi
hotspot such as a compatible mobile device
hotspot, home hotspot, or public hotspot
can be used. Applicable data rates may
apply.
To connect the infotainment system to a
secured mobile device hotspot, home
hotspot, or public hotspot, touch Settings on
the Home Page, select the System tab,
followed by Wi-Fi Networks. Select the
appropriate Wi-Fi network, and follow the
on-screen prompts. Download speeds
may vary.
On most compatible mobile devices,
activation of the Wi-Fi hotspot is in the
Settings menu under Mobile Network
Sharing, Personal Hotspot, Mobile Hotspot,
or similar.
Availability of Over-the-Air software updates
varies by vehicle and country. Features are
subject to change. For more information on
this feature, see my.chevrolet.com/learn.
Preferences
Touch the controls on the infotainment
display to disable or enable the download of
new updates in the background.

Chevrolet Silverado 2500 HD/3500 HD Owner Manual (GMNA-Localizing-U.
S./Canada/Mexico-15546003) - 2022 - CRC - 5/5/21
190 Infotainment System
.Active Call View: Shows active call display
when answering a call.
Touch the controls on the infotainment
display to disable or enable.
.Privacy: Only show call alerts in the
instrument cluster.
Touch Off or On.
.Sort Contacts: Touch to sort by first or
last name.
.Re-sync Device Contacts:
This allows the device contacts to re-sync
if you are having difficulty accessing all of
the contacts on your cell phone.
.Delete All Vehicle Contacts: Touch to
delete all vehicle stored contacts.
.OnStar Phone TTY Mode: This enables
OnStar cell phone TTY mode.
Touch Disable or Enable.
Vehicle
This menu allows adjustment of different
vehicle features. SeeVehicle Personalization
0 131.
Personal
If equipped, this menu allows adjustment of
different user profile settings. See “Users”in
Using the System 0152 for information on
setting up user profiles.
The menu may contain the following:
Name
Touch to edit your user name that will be
displayed in the vehicle.
Vehicle Account Information
Touch to view the vehicle account
information and to change the account
password.
An “unverified user account” pop-up will
display until the account information
verification process has been completed on
the Internet. Check your registered e-mail
account for an activation e-mail to complete
the verification process.
Profile Picture
Touch to choose or change your profile
picture.
Profile Identifiers
Touch to have the vehicle recognize the
identifier you choose. Touch Vehicle Key 1 and/or Vehicle Key 2.
If the Remote Keyless Entry (RKE)
transmitter is lost or stolen, see your dealer.
Security
Touch to have your profile secured with
a PIN.
Touch No or Yes.
Vehicle Name
Touch to edit your vehicle name.
Vehicle Account
Touch to view the vehicle account
information and to change the account
password.
Delete Profile
Touch to remove the profile from the
vehicle.
Touch Remove or Cancel.
Teen Driver
If equipped, this allows multiple keys to be
registered for beginner drivers to encourage
safe driving habits. When the vehicle is
started with a Teen Driver key, it will
automatically activate certain safety
systems, allow setting of some features, and

Chevrolet Silverado 2500 HD/3500 HD Owner Manual (GMNA-Localizing-U.
S./Canada/Mexico-15546003) - 2022 - CRC - 5/5/21
204 Climate Controls
Dual Automatic Climate Control System
The heating, cooling, and ventilation in the vehicle can be controlled with this system.
1. Driver and Passenger TemperatureControls
2. MAX Defrost
3. Air Delivery Mode Controls
4. A/C (Air Conditioning)
5. SYNC (Synchronized Temperature) 6. Recirculation
7. Power Button
8. Fan Control
9. Rear Window Defogger (If Equipped) or
Heated Mirrors (If Equipped)
10. AUTO (Automatic Operation)
Climate Control Display
1. Driver and Passenger Temperature Settings
2. Fan Control
3. Driver and Passenger Temperature Controls
4. Sync (Synchronized Temperature)
5. Recirculation
6. Air Delivery Mode Controls
7. Auto (Automatic Operation)
8. A/C (Air Conditioning)
9. On/Off (Power)

Chevrolet Silverado 2500 HD/3500 HD Owner Manual (GMNA-Localizing-U.
S./Canada/Mexico-15546003) - 2022 - CRC - 5/5/21
Driving and Operating 209
Driving and Operating
Driving Information
Driving for Better Fuel Economy . . . . . . . 210
Distracted Driving . . . . . . . . . . . . . . . . . . . . . 210
Defensive Driving . . . . . . . . . . . . . . . . . . . . . . 211
Impaired Driving . . . . . . . . . . . . . . . . . . . . . . . 211
Control of a Vehicle . . . . . . . . . . . . . . . . . . . . 211
Braking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211
Steering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212
Off-Road Recovery . . . . . . . . . . . . . . . . . . . . . 213
Loss of Control . . . . . . . . . . . . . . . . . . . . . . . . . 213
Off-Road Driving . . . . . . . . . . . . . . . . . . . . . . . 214
Driving on Wet Roads . . . . . . . . . . . . . . . . . 217
Hill and Mountain Roads . . . . . . . . . . . . . . 218
Winter Driving . . . . . . . . . . . . . . . . . . . . . . . . . 218
If the Vehicle Is Stuck . . . . . . . . . . . . . . . . . 219
Vehicle Load Limits . . . . . . . . . . . . . . . . . . . . 220
Truck-Camper Loading Information . . . . . 225
Starting and Operating
New Vehicle Break-In . . . . . . . . . . . . . . . . . . 226
Ignition Positions (Key Access) . . . . . . . . . 227
Ignition Positions (Keyless Access) . . . . . 229
Starting the Engine . . . . . . . . . . . . . . . . . . . 230
Engine Heater . . . . . . . . . . . . . . . . . . . . . . . . . 231
Retained Accessory Power (RAP) . . . . . . . 232
Shifting Into Park . . . . . . . . . . . . . . . . . . . . . . 233
Shifting out of Park . . . . . . . . . . . . . . . . . . . 234
Parking over Things That Burn . . . . . . . . 234Extended Parking . . . . . . . . . . . . . . . . . . . . . . 234
Engine Exhaust
Engine Exhaust . . . . . . . . . . . . . . . . . . . . . . . . 235
Running the Vehicle While Parked . . . . . 235
Automatic Transmission
Automatic Transmission . . . . . . . . . . . . . . . 235
Manual Mode . . . . . . . . . . . . . . . . . . . . . . . . . 238
Tow/Haul Mode . . . . . . . . . . . . . . . . . . . . . . . 240
Drive Systems
Four-Wheel Drive . . . . . . . . . . . . . . . . . . . . . . 240
Brakes
Antilock Brake System (ABS) . . . . . . . . . . 244
Electric Parking Brake . . . . . . . . . . . . . . . . . . 245
Brake Assist . . . . . . . . . . . . . . . . . . . . . . . . . . . 246
Hill Start Assist (HSA) . . . . . . . . . . . . . . . . . 246
Ride Control Systems
Traction Control/Electronic Stability
Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 247
Hill Descent Control (HDC) . . . . . . . . . . . . 248
Driver Mode Control . . . . . . . . . . . . . . . . . . 249
Locking Rear Axle . . . . . . . . . . . . . . . . . . . . . 250
Cruise Control
Cruise Control . . . . . . . . . . . . . . . . . . . . . . . . . 250
Driver Assistance Systems
Driver Assistance Systems . . . . . . . . . . . . . 252 Assistance Systems for Parking or
Backing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 253
Rear Vision Camera (RVC) . . . . . . . . . . . . . 254
Surround Vision System . . . . . . . . . . . . . . . 254
Park Assist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 261
Rear Cross Traffic Alert (RCTA) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262
Assistance Systems for Driving . . . . . . . . 263
Forward Collision Alert (FCA) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 263
Automatic Emergency Braking (AEB) . . . . . . . . . . . . . . . . . . . . . . . . 265
Side Blind Zone Alert (SBZA) . . . . . . . . . . 266
Lane Change Alert (LCA) . . . . . . . . . . . . . . . 266
Lane Departure Warning (LDW) . . . . . . . 268
Fuel
Top Tier Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . 269
Recommended Fuel . . . . . . . . . . . . . . . . . . . 269
Prohibited Fuels . . . . . . . . . . . . . . . . . . . . . . . 269
Fuels in Foreign Countries . . . . . . . . . . . . . 270
Fuel Additives . . . . . . . . . . . . . . . . . . . . . . . . . 270
E85 or FlexFuel . . . . . . . . . . . . . . . . . . . . . . . . 270
Filling the Tank (Pickup Models) . . . . . . . 271
Filling the Tank (Chassis Cab and Box Delete Models) . . . . . . . . . . . . . . . . . . . . . . 272
Filling a Portable Fuel Container . . . . . . . 273
Trailer Towing
General Towing Information . . . . . . . . . . . 273

Chevrolet Silverado 2500 HD/3500 HD Owner Manual (GMNA-Localizing-U.
S./Canada/Mexico-15546003) - 2022 - CRC - 5/5/21
212 Driving and Operating
Steering
Caution
To avoid damage to the steering system,
do not drive over curbs, parking barriers,
or similar objects at speeds greater than
3 km/h (1 mph). Use care when driving
over other objects such as lane dividers
and speed bumps. Damage caused by
misuse of the vehicle is not covered by
the vehicle warranty.
Hydraulic Power Steering (2500/3500
Series)
(2500/3500 Series–All Regular Cab, Double
Cab/Crew Cab with Base Interior)
The power steering system may require
maintenance. See Power Steering Fluid
0 320.
If power steering assist is lost because the
engine stops or the system malfunctions,
the vehicle can be steered but may require
increased effort. See your dealer.
(2500/3500 Series –Double Cab/Crew Cab
with Uplevel Interior)
The vehicle has a power steering system
that varies the amount of effort required to
steer the vehicle. Less steering effort is
required at slower speeds. At faster speeds,
the required steering effort increases. The
system helps the steering wheel return to
center at low speeds. Pressing the Tow/Haul
mode button adjusts steering effort for
driving conditions described in Tow/Haul
Mode 0240.
The power steering system may require
maintenance. See Power Steering Fluid
0 320. If power steering assist is lost because the
engine stops or the system malfunctions,
the vehicle can be steered but may require
increased effort. See your dealer.
{Warning
Do not hold the brake pedal and press
the accelerator pedal at the same time.
Damage may occur to the power steering
and power brake systems which could
lead to reduced performance, up to and
including loss of steering and brake
assist.
Caution
Do not hold the steering wheel at full
rotation for more than 15 seconds and/or
at an elevated RPM. Damage may occur
to the power steering system and there
may be loss of power steering assist.
Curve Tips
.Take curves at a reasonable speed.
.Reduce speed before entering a curve.
.Maintain a reasonable steady speed
through the curve.

Chevrolet Silverado 2500 HD/3500 HD Owner Manual (GMNA-Localizing-U.
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Driving and Operating 229
If the key is left in ON/RUN with the engine
off, the battery could drain and the vehicle
may not start.
3 (START) :This is the position that starts
the engine. When the engine starts, release
the key. The ignition returns to ON/RUN for
driving.
Ignition Positions (Keyless Access)
Vehicles equipped with Keyless Access have
pushbutton starting.
The Remote Keyless Entry (RKE) transmitter
must be in the vehicle for the system to
operate. If the pushbutton start is not
working, the vehicle may be near a strong
radio antenna signal causing interference to the Keyless Access system. See
Remote
Keyless Entry (RKE) System Operation (Key
Access) 010 or
Remote Keyless Entry (RKE) System
Operation (Keyless Access) 013.
To shift out of P (Park), the ignition must be
on or in Service Mode, and the brake pedal
must be applied.
{Warning
Turning off the vehicle while moving may
cause loss of power assist in the brake
and steering systems and disable the
airbags. While driving, only shut the
vehicle off in an emergency.
Stopping the Engine/LOCK/OFF (No Indicator
Lights) : When the vehicle is stopped, press
ENGINE START/STOP once to turn the
engine off.
If the vehicle is in P (Park), the ignition will
turn off, and Retained Accessory Power (RAP)
will remain active. See Retained Accessory
Power (RAP) 0232.
If the vehicle is not in P (Park), the ignition
will return to ACC/ACCESSORY and display
the message SHIFT TO PARK in the Driver Information Center (DIC). When the vehicle is
shifted into P (Park), the ignition system will
turn off.
The vehicle may have an electric steering
column lock. The lock is activated when the
ignition is turned off and driver door is
opened. A sound may be heard as the lock
actuates or releases. The steering column
lock may not release with the wheels turned
off center. If this happens, the vehicle may
not start. Move the steering wheel from left
to right while attempting to start the
vehicle. If this does not work, the vehicle
needs service.
Unless an emergency exists, do not turn the
engine off when the vehicle is moving. This
will cause a loss of power assist in the brake
and steering systems and disable the
airbags.
If the vehicle must be shut off in an
emergency:
1. If the vehicle cannot be pulled over, and must be shut off while driving, press and
hold ENGINE START/STOP button for
longer than two seconds, or press twice
in five seconds.

Chevrolet Silverado 2500 HD/3500 HD Owner Manual (GMNA-Localizing-U.
S./Canada/Mexico-15546003) - 2022 - CRC - 5/5/21
230 Driving and Operating
2. Brake using a firm and steady pressure.Do not pump the brakes repeatedly. This
may deplete power assist, requiring
increased brake pedal force.
3. Shift the vehicle to N (Neutral). This can be done while the vehicle is moving.
After shifting to N (Neutral), firmly apply
the brakes and steer the vehicle to a
safe location.
4. Come to a complete stop, shift to P (Park), and make sure engine is off.
The shift lever must be in P (Park) to
turn the ignition off.
5. Set the parking brake. See Electric
Parking Brake 0245.
{Warning
Turning off the vehicle while moving may
cause loss of power assist in the brake
and steering systems and disable the
airbags. While driving, only shut the
vehicle off in an emergency.
ACC/ACCESSORY (Amber Indicator Light) :
This mode allows some electrical accessories
to be used when the engine is off. With the ignition off, pressing the ENGINE
START/STOP button one time without the
brake pedal applied will place the ignition
system in ACC/ACCESSORY.
The ignition will switch from ACC/
ACCESSORY to off after five minutes to
prevent battery rundown.
ON/RUN/START (Green Indicator Light) :
This
mode is for driving and starting. With the
ignition off, and the brake pedal applied,
pressing ENGINE START/STOP button once
will turn the ignition on. Once engine
cranking begins, release the button. Engine
cranking will continue until the engine
starts. See Starting the Engine 0230.
Service Mode
This power mode is available for service and
diagnostics, and to verify the proper
operation of the malfunction indicator lamp
as may be required for emission inspection
purposes. With the vehicle off, and the
brake pedal not applied, pressing and
holding the ENGINE START/STOP button for
more than five seconds will place the vehicle
in Service Mode. The instruments and audio
systems will operate as they do when the
ignition is on, but the vehicle will not be able to be driven. The engine will not start
in Service Mode. Press the ENGINE START/
STOP button again to turn the ignition off.
Starting the Engine
If the vehicle has a diesel engine, see the
Duramax diesel supplement.
Caution
If you add electrical parts or accessories,
you could change the way the engine
operates. Any resulting damage would
not be covered by the vehicle warranty.
See
Add-On Electrical Equipment 0303.
Move the shift lever to P (Park) or
N (Neutral). To restart the engine when the
vehicle is already moving, use
N (Neutral) only.
Caution
Do not try to shift to P (Park) if the
vehicle is moving. If you do, you could
damage the transmission. Shift to P (Park)
only when the vehicle is stopped.