fuel GMC SIERRA 2022 Owner's Manual

GMC Sierra/Sierra Denali 1500 Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-15883563) - 2022 - CRC - 11/19/21
174 Infotainment System
“How much gas do I have left”:Find out
how much fuel your vehicle has left.
“Set temperature to
degrees” :Set to a specific temperature
inside your vehicle.
Phone Assistant Voice Recognition
While a device is connected via Bluetooth,
press and hold
gon the steering wheel
controls to pass through and launch Google
assistant on the phone or Siri.
Phone
Bluetooth (Overview)
The Bluetooth-capable system can interact
with many mobile devices to:
.Place and receive calls in a
hands-free mode.
.Share the device’s address book or
contact list with the vehicle.
.Stream audio (music, podcasts).
.Notify receipt of text messages.
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
duplicate or rarely used entries.
.Review the controls and operation of the
infotainment system.
.Pair mobile device(s) to the vehicle. The
system may not work with all mobile
devices. See “Pairing”later in this section.
Vehicles with a Bluetooth system can use a
Bluetooth-capable mobile device with a
Hands-Free Profile to make and receive
phone calls. The infotainment system and
voice recognition are used to control the
system. The system can be used while the
vehicle is on. The range of the Bluetooth
system can be up to 9.1 m (30 ft). Not all
mobile devices support all functions and not
all mobile devices work with the Bluetooth
system. See my.gmc.com for more
information about compatible mobile
devices.
Controls
Use the controls on the infotainment display
and the steering wheel to operate the
Bluetooth system. Steering Wheel Controls
g:
Press and release to answer incoming
calls on your connected Bluetooth mobile
device. Press and hold for mobile device
assistant.
c: Press to end a call, decline a call,
or cancel an operation. Press to mute or
unmute the infotainment system when not
on a call.
Infotainment System Controls
For information about how to navigate the
menu system using the infotainment
controls, see Using the System 0159.
Audio System
When using the Bluetooth mobile device
system, sound comes through the vehicle's
front audio system speakers and overrides
the audio system. The volume level while on
a mobile device call can be adjusted by
pressing the steering wheel controls or the
volume control on the center stack. The
adjusted volume level remains in memory
for later calls. The volume cannot be
lowered beyond a certain level.

GMC Sierra/Sierra Denali 1500 Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-15883563) - 2022 - CRC - 11/19/21
Infotainment System 193
.Some safety systems, such as Automatic
Emergency Braking, if equipped, cannot
be turned off.
.The gap setting for Adaptive Cruise
Control and the alert timing setting for
Forward Collision Alert, if equipped,
cannot be changed.
.When trying to change a safety feature
that is not configurable in Teen Driver,
the DIC displays a message indicating
that Teen Driver is active and the action
is not available.
.Super Cruise, if equipped, is not available.
.Enhanced Low Fuel Warning (if equipped)
–When the vehicle is low on fuel, the
low fuel light on the instrument cluster
flashes and the DIC low fuel warning
cannot be dismissed.
.Do not tow a trailer if equipped with
Automatic Emergency Braking.
Report Card
The vehicle owner must secure the driver’s
consent to record certain vehicle data when
the vehicle is driven with a registered Teen
Driver key. There is one Report Card per
vehicle. Data is only recorded when a
registered Teen Driver key is used to
operate the vehicle. The Report Card data is collected from the
time Teen Driver is activated or the last
time the Report Card was reset. The
following items may be recorded:
.Distance Driven
–the total distance
driven.
.Maximum Speed –the maximum vehicle
speed detected.
.Overspeed Warnings –the number of
times the speed warning setting was
exceeded.
.Wide Open Throttle –the number of
times the accelerator pedal was pressed
nearly all the way down.
.Forward Collision Alerts (if equipped) –
the number of times the driver was
notified when approaching a vehicle
ahead too quickly and at potential risk for
a crash.
.Forward Automatic Braking, also called
Automatic Emergency Braking (if
equipped) –the number of times the
vehicle detected that a forward collision
was imminent and applied the brakes.
.Reverse Automatic Braking (if equipped) –
the number of times the vehicle detected
that a rearward collision was imminent
and applied the brakes.
.Traction Control –the number of times
the Traction Control System activated to
reduce wheel spin or loss of traction.
.Stability Control –the number of events
which required the use of electronic
stability control.
.Antilock Braking System Active –The
number of Antilock Brake System
activations.
.Tailgating Alerts (if equipped) –the
number of times the driver was alerted
for following a vehicle ahead too closely.
Report Card Data
Cumulative Data is saved for all trips until
the Report Card is reset or until the
maximum count is exceeded. If the
maximum count is exceeded for a Report
Card line item, that item will no longer be
updated in the Report Card until it is reset.
Each item will report a maximum of
1,000 counts. The distance driven will report
a maximum of 64,374 km (40,000 mi).
To delete Report Card data, do one of the
following:
.From the Report Card display, touch
Reset.

GMC Sierra/Sierra Denali 1500 Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-15883563) - 2022 - CRC - 11/19/21
Climate Controls 199
Front Climate Control Display
Uplevel Shown
1. Driver and Passenger Temperature Settings
2. Fan Control
3. Driver and Passenger Temperature Controls
4. Recirculation
5. A/C (Air Conditioning)
6. Sync (Synchronized Temperature)
7. Auto (Automatic Operation)
8. Air Delivery Mode Controls
9. Power (On/Off) The fan, air delivery mode, air conditioning,
driver and passenger temperatures, and Sync
settings can be controlled by touching
CLIMATE on the infotainment Home Page or
the climate button in the climate control
display application tray. A selection can then
be made on the front climate control page
displayed.
Climate Control Status Display
The climate control status display appears
briefly when the center stack climate
controls are adjusted.
Automatic Operation
The system automatically controls the fan
speed, air delivery, air conditioning, and
recirculation in order to heat or cool the
vehicle to the desired temperature.
When AUTO is lit, all four functions operate
automatically. Each function can also be
manually set and the selected setting is
displayed. Functions not manually set will
continue to be automatically controlled,
even if the AUTO indicator is not lit.
For automatic operation:
1. Press AUTO.
2. Set the temperature. Allow the system time to stabilize. Adjust the temperature
as needed for best comfort.
To improve fuel efficiency and to cool the
vehicle faster, recirculation may be
automatically selected in warm weather.
The recirculation light will not come on
when automatically controlled. See@
under “Manual Operation” for more details.
Manual Operation
9:Press to increase or decrease the fan
speed. Toggle all the way down to turn the
fan off. When OFF is selected, a small

GMC Sierra/Sierra Denali 1500 Owner Manual (GMNA-Localizing-U.S./
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204 Driving and Operating
Driving and Operating
Driving Information
Driving for Better Fuel Economy . . . . . . 205
Distracted Driving . . . . . . . . . . . . . . . . . . . . . 206
Defensive Driving . . . . . . . . . . . . . . . . . . . . . 206
Impaired Driving . . . . . . . . . . . . . . . . . . . . . . 206
Control of a Vehicle . . . . . . . . . . . . . . . . . . . 207
Braking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
Steering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
Off-Road Recovery . . . . . . . . . . . . . . . . . . . . 208
Loss of Control . . . . . . . . . . . . . . . . . . . . . . . . 208
Off-Road Driving . . . . . . . . . . . . . . . . . . . . . . 208
Driving on Wet Roads . . . . . . . . . . . . . . . . . 212
Hill and Mountain Roads . . . . . . . . . . . . . . 213
Winter Driving . . . . . . . . . . . . . . . . . . . . . . . . . 213
If the Vehicle Is Stuck . . . . . . . . . . . . . . . . . 214
Vehicle Load Limits . . . . . . . . . . . . . . . . . . . . 215
Truck-Camper Loading Information . . . . 220
Starting and Operating
New Vehicle Break-In . . . . . . . . . . . . . . . . . . 222
Ignition Positions . . . . . . . . . . . . . . . . . . . . . . 222
Starting the Engine . . . . . . . . . . . . . . . . . . . . 224
Stop/Start System . . . . . . . . . . . . . . . . . . . . . 225
Engine Heater . . . . . . . . . . . . . . . . . . . . . . . . . 225
Retained Accessory Power (RAP) . . . . . . . 227
Shifting Into Park (MechanicalShifter) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227 Shifting Into Park (Electronic
Shifter) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 228
Shifting out of Park (Mechanical Shifter) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 229
Shifting out of Park (Electronic
Shifter) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 229
Parking over Things That Burn . . . . . . . . 230
Active Fuel Management . . . . . . . . . . . . . . 230
Extended Parking . . . . . . . . . . . . . . . . . . . . . . 230
Engine Exhaust
Engine Exhaust . . . . . . . . . . . . . . . . . . . . . . . . 230
Running the Vehicle While Parked . . . . . 231
Automatic Transmission
Automatic Transmission (Mechanical Shifter) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 231
Automatic Transmission (Electronic Shifter) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 233
Manual Mode (Mechanical Shifter) . . . . 237
Manual Mode (Electronic Shifter) . . . . . . 239
Tow/Haul Mode . . . . . . . . . . . . . . . . . . . . . . . 240
Drive Systems
Four-Wheel Drive . . . . . . . . . . . . . . . . . . . . . . 240
Brakes
Electric Brake Boost . . . . . . . . . . . . . . . . . . . 245
Antilock Brake System (ABS) . . . . . . . . . . 245
Electric Parking Brake . . . . . . . . . . . . . . . . . . 245
Brake Assist . . . . . . . . . . . . . . . . . . . . . . . . . . . 247
Hill Start Assist (HSA) . . . . . . . . . . . . . . . . . 247
Ride Control Systems
Traction Control/Electronic Stability Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 247
Hill Descent Control (HDC) . . . . . . . . . . . . 249
Driver Mode Control . . . . . . . . . . . . . . . . . . 249
Limited-Slip Differential . . . . . . . . . . . . . . . . 252
Locking Rear Axle . . . . . . . . . . . . . . . . . . . . . . 253
Locking Front Axle . . . . . . . . . . . . . . . . . . . . . 253
Cruise Control
Cruise Control . . . . . . . . . . . . . . . . . . . . . . . . . 254
Adaptive Cruise Control (Camera) . . . . . . 256
Super Cruise . . . . . . . . . . . . . . . . . . . . . . . . . . . 267
Driver Assistance Systems
Driver Assistance Systems . . . . . . . . . . . . . 282
Assistance Systems for Parking or Backing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 283
Rear Vision Camera (RVC) . . . . . . . . . . . . . 283
Surround Vision System . . . . . . . . . . . . . . . 284
Park Assist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 291
Rear Pedestrian Alert . . . . . . . . . . . . . . . . . . 292
Rear Cross Traffic Alert (RCTA) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 293
Assistance Systems for Driving . . . . . . . . 293
Forward Collision Alert (FCA) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 293
Automatic Emergency Braking (AEB) . . . . . . . . . . . . . . . . . . . . . . . . 295
Front Pedestrian Braking (FPB)
System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 297

GMC Sierra/Sierra Denali 1500 Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-15883563) - 2022 - CRC - 11/19/21
Driving and Operating 205
Side Blind Zone Alert (SBZA) . . . . . . . . . . 299
Lane Change Alert (LCA) . . . . . . . . . . . . . . . 299
Lane Departure Warning (LDW) . . . . . . . . 301
Lane Keep Assist (LKA) . . . . . . . . . . . . . . . . 302
Fuel
Top Tier Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . 304
Recommended Fuel (2.7L L4 and 5.3LV8 Engines) . . . . . . . . . . . . . . . . . . . . . . . . . 304
Recommended Fuel (6.2L V8 Engine) . . . . . . . . . . . . . . . . . . . . . . . . . . 305
Prohibited Fuels . . . . . . . . . . . . . . . . . . . . . . . 305
Fuels in Foreign Countries . . . . . . . . . . . . . 305
Fuel Additives . . . . . . . . . . . . . . . . . . . . . . . . . 305
Filling the Tank (Pickup Model) . . . . . . . 306
Filling the Tank (Chassis Cab Model) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 307
Filling a Portable Fuel Container . . . . . . 308
Trailer Towing
General Towing Information . . . . . . . . . . 309
Driving Characteristics and Towing Tips . . . . . . . . . . . . . . . . . . . . . . . . . 309
Trailer Towing . . . . . . . . . . . . . . . . . . . . . . . . . 313
Towing Equipment . . . . . . . . . . . . . . . . . . . . . 317
Trailer Sway Control (TSC) . . . . . . . . . . . . . 327
Trailering App . . . . . . . . . . . . . . . . . . . . . . . . . 329
Conversions and Add-Ons
Add-On Electrical Equipment . . . . . . . . . . . 338
Adding a Snow Plow or Similar Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . 338
Pickup Conversion to Chassis Cab . . . . . 340Driving Information
Driving for Better Fuel Economy
Driving habits can affect fuel mileage. Here
are some driving tips to get the best fuel
economy possible:
.Set the climate controls to the desired
temperature after the engine is started,
or turn them off when not required.
.Avoid fast starts and accelerate smoothly.
.Brake gradually and avoid abrupt stops.
.Avoid idling the engine for long periods
of time.
.When road and weather conditions are
appropriate, use cruise control.
.Always follow posted speed limits or
drive more slowly when conditions
require.
.Keep vehicle tires properly inflated.
.Combine several trips into a single trip.
.Replace the vehicle's tires with the same
TPC Spec number molded into the tire's
sidewall near the size.
.Follow recommended scheduled
maintenance.

GMC Sierra/Sierra Denali 1500 Owner Manual (GMNA-Localizing-U.S./
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Driving and Operating 209
{Warning
When driving off-road, bouncing and
quick changes in direction can easily
throw you out of position. This could
cause you to lose control and crash. You
and your passengers should always wear
seat belts.
Before Driving Off-Road
.Have all necessary maintenance and
service work completed.
.Fuel the vehicle, fill fluid levels, and check
inflation pressure in all tires, including the
spare, if equipped.
.Read all the information about
four-wheel-drive vehicles in this manual.
.Remove any underbody air deflector,
if equipped. Re-attach the air deflector
after off-road driving.
.Know the local laws that apply to off-road
driving.
To gain more ground clearance if needed, it
may be necessary to remove the front fascia
lower air dam, if equipped. However, driving
without the air dam reduces fuel economy.
Caution
Operating the vehicle for extended
periods without the front fascia lower air
dam installed can cause improper airflow
to the engine. Reattach the front fascia
air dam after off-road driving.
Loading the Vehicle for Off-Road Driving
{Warning
.Unsecured cargo on the load floor can
be tossed about when driving over
rough terrain. You or your passengers
can be struck by flying objects. Secure
the cargo properly.
.Keep cargo in the cargo area as far
forward and as low as possible. The
heaviest things should be on the floor,
forward of the rear axle.
.Heavy loads on the roof raise the
vehicle's center of gravity, making it
more likely to roll over. You can be
seriously or fatally injured if the
vehicle rolls over. Put heavy loads
inside the cargo area, not on the roof. For more information about loading the
vehicle, see
Vehicle Load Limits 0215 and
Tires 0377.
Environmental Concerns
.Always use established trails, roads, and
areas that have been set aside for public
off-road recreational driving and obey all
posted regulations.
.Do not damage shrubs, flowers, trees,
or grasses or disturb wildlife.
.Do not park over things that burn. See
Parking over Things That Burn 0230.
Driving on Hills
Driving safely on hills requires good
judgment and an understanding of what the
vehicle can and cannot do.
{Warning
Many hills are simply too steep for any
vehicle. Driving up hills can cause the
vehicle to stall. Driving down hills can
cause loss of control. Driving across hills
can cause a rollover. You could be injured
or killed. Do not drive on steep hills.

GMC Sierra/Sierra Denali 1500 Owner Manual (GMNA-Localizing-U.S./
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212 Driving and Operating
Warning (Continued)
ground from under your tires. Traction
could be lost, and the vehicle could roll
over. Do not drive through rushing water.
Caution
Do not drive through standing water if it
is deep enough to cover the wheel hubs,
axles, or exhaust pipe. Deep water can
damage the axle and other vehicle parts.
If the standing water is not too deep, drive
through it slowly. At faster speeds, water
can get into the engine and cause it to stall.
Stalling can occur if the exhaust pipe is
under water. Do not turn off the ignition
when driving through water. If the exhaust
pipe is under water, the engine will not
start. When going through water, the brakes
get wet and it may take longer to stop. See
“Driving on Wet Roads” later in this section.
After Off-Road Driving
Remove any brush or debris that has
collected on the underbody or chassis,
or under the hood. These accumulations can
be a fire hazard. Reinstall underbody air
deflector and air dam if removed. After operation in mud or sand, have the
brake linings cleaned and checked. These
substances can cause glazing and uneven
braking. Check the body structure, driveline,
steering, suspension, wheels, tires, and
exhaust system for damage and check the
fuel lines and cooling system for any
leakage.
More frequent maintenance service is
required. See the
Maintenance Schedule
0 425.
Driving on Wet Roads
Rain and wet roads can reduce vehicle
traction and affect your ability to stop and
accelerate. Always drive slower in these
types of driving conditions and avoid driving
through large puddles and deep-standing or
flowing water.
{Warning
Wet brakes can cause crashes. They
might not work as well in a quick stop
and could cause pulling to one side. You
could lose control of the vehicle.
(Continued)
Warning (Continued)
After driving through a large puddle of
water or a car/vehicle wash, lightly apply
the brake pedal until the brakes work
normally.
Flowing or rushing water creates strong
forces. Driving through flowing water
could cause the vehicle to be carried
away. If this happens, you and other
vehicle occupants could drown. Do not
ignore police warnings and be very
cautious about trying to drive through
flowing water.
Hydroplaning
Hydroplaning is dangerous. Water can build
up under the vehicle's tires so they actually
ride on the water. This can happen if the
road is wet enough and you are going fast
enough. When the vehicle is hydroplaning, it
has little or no contact with the road.
There is no hard and fast rule about
hydroplaning. The best advice is to slow
down when the road is wet.

GMC Sierra/Sierra Denali 1500 Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-15883563) - 2022 - CRC - 11/19/21
214 Driving and Operating
.Allow greater following distance and
watch for slippery spots. Icy patches can
occur on otherwise clear roads in shaded
areas. The surface of a curve or an
overpass can remain icy when the
surrounding roads are clear. Avoid sudden
steering maneuvers and braking while
on ice.
.Turn off cruise control.
Cold Weather Mode
In very low temperatures, a cold weather
message may display on the Driver
Information Center (DIC). The engine speed,
transmission shift patterns, and cabin fan
speed may operate differently to enable the
vehicle to warm up quicker. You can
manually override the cabin fan speed in
cold weather mode.
Blizzard Conditions
Stop the vehicle in a safe place and signal
for help. Stay with the vehicle unless there
is help nearby. If possible, use Roadside
Assistance. SeeRoadside Assistance Program
0 445. To get help and keep everyone in the
vehicle safe:
.Turn on the hazard warning flashers.
.Tie a red cloth to an outside mirror.
{Warning
Snow can trap engine exhaust under the
vehicle. This may cause exhaust gases to
get inside. Engine exhaust contains
carbon monoxide (CO), which cannot be
seen or smelled. It can cause
unconsciousness and even death.
If the vehicle is stuck in snow:
.Clear snow from the base of the
vehicle, especially any blocking the
exhaust pipe.
.Open a window about 5 cm (2 in) on
the vehicle side that is away from the
wind, to bring in fresh air.
.Fully open the air outlets on or under
the instrument panel.
.Adjust the climate control system to
circulate the air inside the vehicle and
set the fan speed to the highest
setting. See “Climate Control Systems.”
For more information about CO, see
Engine Exhaust 0230. To save fuel, run the engine for short
periods to warm the vehicle and then shut
the engine off and partially close the
window. Moving about to keep warm also
helps.
If it takes time for help to arrive, when
running the engine, push the accelerator
pedal slightly so the engine runs faster than
the idle speed. This keeps the battery
charged to restart the vehicle and to signal
for help with the headlamps. Do this as
little as possible, to save fuel.
If the Vehicle Is Stuck
Slowly and cautiously spin the wheels to
free the vehicle when stuck in sand, mud,
ice, or snow. See
“Rocking the Vehicle to Get
It Out” later in this section.
If equipped, the front and rear axles may
be locked to improve traction. See Locking
Front Axle 0253 and
Locking Rear Axle 0253.
The Traction Control/Electronic Stability
Control can often help to free a stuck
vehicle. See Traction Control/Electronic
Stability Control 0247. If TC/ESC cannot free
the vehicle, see “Rocking the Vehicle to Get
it Out” following.

GMC Sierra/Sierra Denali 1500 Owner Manual (GMNA-Localizing-U.S./
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222 Driving and Operating
“Certification/Tire Label”underVehicle
Load Limits 0215. If weight ratings are
exceeded, move or remove items to
bring all weights below the ratings.
See your dealer for more information
on curb weights, cargo weights, Cargo
Weight Rating, and the correct center of
gravity zone.
Starting and Operating
New Vehicle Break-In
Caution
The vehicle does not need an elaborate
break-in. But it will perform better in the
long run if you follow these guidelines:
.Do not drive at any one constant
speed, fast or slow, for the first
800 km (500 mi). Do not make
full-throttle starts. Avoid downshifting
to brake or slow the vehicle.
.Avoid making hard stops for the first
300 km (200 mi) or so. During this
time the new brake linings are not yet
broken in. Hard stops with new linings
(Continued)
Caution (Continued)
can mean premature wear and earlier
replacement. Follow this breaking-in
guideline every time you get new
brake linings.
.Do not tow a trailer during break-in.
See Trailer Towing 0313 for the trailer
towing capabilities of the vehicle and
more information.
Following break-in, engine speed and load
can be gradually increased.
On new vehicles, the various mechanical and
electrical systems experience a “break-in”
period during the first 6 400 km (4,000 mi)
of routine driving. As the vehicle is driven,
the mechanical systems adjust to provide
optimal fuel economy and transmission shift
performance.
Electrical systems will adapt and calibrate
during the break-in period. A one-time
occurrence of clicks and similar vehicle
noises is normal during this process.
Normal driving charges the vehicle’s battery
to achieve the best operation of the vehicle,
including fuel economy and the Stop/Start
System. See Stop/Start System 0225.
Ignition Positions
Vehicles equipped with Keyless Access have
pushbutton starting.
The remote key 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 014.
To shift out of P (Park), the vehicle must be
on and the brake pedal must be applied.

GMC Sierra/Sierra Denali 1500 Owner Manual (GMNA-Localizing-U.S./
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224 Driving and Operating
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
vehicle 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 vehicle 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.
SeeAdd-On Electrical Equipment 0338. 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.
Starting Procedure
1. The remote key must be in the vehicle.
Press ENGINE START/STOP with the brake
pedal applied. When the engine begins
cranking, let go of the button.
The driver may observe a minor, and
temporary, brake pedal kickback when
starting the vehicle. This is normal.
The idle speed will go down as the
engine gets warm. Do not race the
engine immediately after starting it.
Operate the engine and transmission
gently to allow the oil to warm up and
lubricate all moving parts. When the low fuel warning light is on
and the FUEL LEVEL LOW message is
displayed in the Driver Information
Center (DIC), press ENGINE START/STOP
to continue engine cranking.
Caution
Cranking the engine for long periods of
time, by returning the ignition to the
START position immediately after
cranking has ended, can overheat and
damage the cranking motor, and drain
the battery. Wait at least 15 seconds
between each try, to let the cranking
motor cool down.
2. If the engine does not start after five to 10 seconds, especially in very cold
weather (below −18 °C or 0 °F), it could
be flooded with too much gasoline. Try
pushing the accelerator pedal all the way
to the floor and holding it there while
pressing ENGINE START/STOP for up to a
maximum of 15 seconds. Wait at least
15 seconds between each try, to allow
the cranking motor to cool down. When
the engine starts, let go of the button
and accelerator. If the vehicle starts
briefly but then stops again, do the
same thing. This clears the extra gasoline