parking brake GMC ACADIA 2022 Owners Manual

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-15170041) - 2022 - CRC - 10/6/21
Introduction 5
1.Air Vents 0197.
2. Exterior Lamp Controls 0132.
Turn Signal Lever. See Turn and
Lane-Change Signals 0135.
3. Instrument Cluster (Base and Midlevel)
098 or
Instrument Cluster (Uplevel) 0101.
4. Windshield Wiper/Washer 092.
Rear Window Wiper/Washer 093.
5. Light Sensor. See Automatic Headlamp
System 0134.
6. Infotainment. See Overview0140.
7. Dual Automatic Climate Control System
0192.
8. USB Port 0148 (If Equipped).
9. Wireless Charging 095 (If Equipped).
10. Heated and Ventilated Front Seats 042
(If Equipped).
11.
|Hazard Warning Flashers 0135.
gTraction Control/Electronic Stability
Control 0227.
XPark Assist Switch. See Assistance
Systems for Parking or Backing 0241 (If
Equipped). 12.
Driver Mode Control 0229.
13.
ALane Keep Assist (LKA) 0253 (If
Equipped).
5Hill Descent Control (HDC) 0228 (If
Equipped).
14.
hAuto Stop Disable Button. See Stop/
Start System 0215 (If Equipped).
15. Power Outlets 094.
16. Shift Switches. See Automatic
Transmission 0220.
17. ENGINE START/STOP Button. See Starting
the Engine 0214.
18. Steering Wheel Controls 091 (If
Equipped).
Driver Information Center (DIC) Buttons.
See Driver Information Center (DIC) (Base
Level) 0116 or
Driver Information Center (DIC) (Midlevel
and Uplevel) 0118.
19. Horn 092.
20. Steering Wheel Adjustment 091. 21.
Cruise Control 0230.
Adaptive Cruise Control (Advanced) 0232
(If Equipped).
Forward Collision Alert (FCA) System
0 246 (If Equipped).
Heated Steering Wheel 091 (If
Equipped).
22. Hood Release. See Hood0271.
23. Instrument Panel Illumination Control
0136 (Out of View).
Head-Up Display (HUD) 0120 (If
Equipped).
24. Data Link Connector (DLC) (Out of View). SeeMalfunction Indicator Lamp (Check
Engine Light) 0108.
25. Electric Parking Brake 0225.

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-15170041) - 2022 - CRC - 10/6/21
14 Keys, Doors, and Windows
Remote Vehicle Start
If equipped, this feature allows the engine
to be started from outside of the vehicle.
/:This button will be on the RKE
transmitter if the vehicle has remote start.
The climate control system will use the
previous settings during a remote start. The
rear defog may come on during a remote
start based on cold ambient conditions. The
rear fog indicator light does not come on
during a remote start.
If the vehicle has heated or ventilated seats,
they may come on during a remote start.
See Heated and Ventilated Front Seats 042.
If equipped with a remote start heated
steering wheel, the heated wheel will turn
on automatically in remote start along with
the heated seats when it is cold outside. See
Heated Steering Wheel 091.
Laws in some local communities may restrict
the use of remote starters. For example,
some laws may require a person using
remote start to have the vehicle in view.
Check local regulations for any
requirements.
Do not use remote start if the vehicle is low
on fuel as it may run out of fuel. Other conditions can affect the performance
of the transmitter. See
Remote Keyless Entry
(RKE) System 07.
Starting the Engine Using Remote Start
1. Press and releaseQon the RKE
transmitter.
2. Immediately press and hold
/for at
least four seconds or until the turn
signal lamps flash. The turn signal lamps
flashing confirms the request to remote
start the vehicle has been received.
During the remote start the doors will be
locked and the parking lamps will remain
on as long as the engine is running.
The engine will shut off after 15 minutes
unless a time extension is done or the
vehicle is started.
3. With the RKE transmitter in the vehicle, press the brake pedal and start the
vehicle to drive.
Extending Engine Run Time
The engine run time can also be extended
by another 15 minutes, if during the first
15 minutes Steps 1 and 2 are repeated while
the engine is still running. An extension can
be requested 30 seconds after starting. This
provides a total of 30 minutes. The remote start can only be extended once.
When the remote start is extended, the
second 15-minute period is added on to the
first 15 minutes for a total of 30 minutes.
A maximum of two remote starts, or a
remote start with an extension, are allowed
between ignition cycles.
The vehicle must be started and then turned
off before the remote start procedure can be
used again.
Canceling a Remote Start
To cancel a remote start, do any of the
following:
.Press and hold/until the parking lamps
turn off.
.Turn on the hazard warning flashers.
.Turn the vehicle on and then off.
Conditions in Which Remote Start Will
Not Work
The remote start will not operate if any of
the following occur:
.A transmitter is in the vehicle.
.The ignition is on.
.The hood is not closed.
.The hazard warning flashers are on.

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-15170041) - 2022 - CRC - 10/6/21
90 Instruments and Controls
Instruments and Controls
Controls
Steering Wheel Adjustment . . . . . . . . . . . . . 91
Steering Wheel Controls . . . . . . . . . . . . . . . . 91
Heated Steering Wheel . . . . . . . . . . . . . . . . . 91
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Windshield Wiper/Washer . . . . . . . . . . . . . . 92
Rear Window Wiper/Washer . . . . . . . . . . . 93
Compass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Power Outlets . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Wireless Charging . . . . . . . . . . . . . . . . . . . . . . 95
Warning Lights, Gauges, and Indicators
Warning Lights, Gauges, andIndicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Instrument Cluster (Base and Midlevel) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Instrument Cluster (Uplevel) . . . . . . . . . . . 101
Speedometer . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Trip Odometer . . . . . . . . . . . . . . . . . . . . . . . . . 103
Tachometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Fuel Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Engine Oil Temperature Gauge (Uplevel only) . . . . . . . . . . . . . . . . . . . . . . . 104
Engine Coolant Temperature Gauge . . . 105
Voltmeter Gauge (Uplevel only) . . . . . . . 105
Seat Belt Reminders . . . . . . . . . . . . . . . . . . . 106 Airbag Readiness Light . . . . . . . . . . . . . . . . 106
Passenger Airbag Status Indicator . . . . . 107
Charging System Light . . . . . . . . . . . . . . . . 108
Malfunction Indicator Lamp (Check
Engine Light) . . . . . . . . . . . . . . . . . . . . . . . . 108
Brake System Warning Light . . . . . . . . . . 109
Electric Parking Brake Light . . . . . . . . . . . . 110
Service Electric Parking Brake Light (Uplevel and Midlevel
Cluster Only) . . . . . . . . . . . . . . . . . . . . . . . . . 110
Antilock Brake System (ABS) Warning Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Gear Shifting Light . . . . . . . . . . . . . . . . . . . . . 111
Hill Descent Control Light . . . . . . . . . . . . . . 111
Lane Keep Assist (LKA) Light . . . . . . . . . . . . 111
Vehicle Ahead Indicator . . . . . . . . . . . . . . . . 112
Pedestrian Ahead Indicator . . . . . . . . . . . . . 112
Traction Off Light . . . . . . . . . . . . . . . . . . . . . . 112
StabiliTrak OFF Light . . . . . . . . . . . . . . . . . . . 112
Traction Control System (TCS)/ StabiliTrak Light . . . . . . . . . . . . . . . . . . . . . . 113
Engine Coolant Temperature Warning Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
Driver Mode Control Light . . . . . . . . . . . . . 113
Tire Pressure Light . . . . . . . . . . . . . . . . . . . . . 114
Engine Oil Pressure Light . . . . . . . . . . . . . . 114
Low Fuel Warning Light . . . . . . . . . . . . . . . . 115
Security Light . . . . . . . . . . . . . . . . . . . . . . . . . . 115
High-Beam On Light . . . . . . . . . . . . . . . . . . . . 115
Front Fog Lamp Light . . . . . . . . . . . . . . . . . . 115 Lamps On Reminder . . . . . . . . . . . . . . . . . . . . 115
Cruise Control Light . . . . . . . . . . . . . . . . . . . . 116
Door Ajar Light . . . . . . . . . . . . . . . . . . . . . . . . 116
Information Displays
Driver Information Center (DIC) (Base
Level) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Driver Information Center (DIC) (Midlevel and Uplevel) . . . . . . . . . . . . . . . 118
Head-Up Display (HUD) . . . . . . . . . . . . . . . . 120
Vehicle Messages
Vehicle Messages . . . . . . . . . . . . . . . . . . . . . . 123
Engine Power Messages . . . . . . . . . . . . . . . 124
Vehicle Speed Messages . . . . . . . . . . . . . . . 124
Vehicle Personalization
Vehicle Personalization . . . . . . . . . . . . . . . . 124
Universal Remote System
Universal Remote System . . . . . . . . . . . . . . 128
Universal Remote System Programming . . . . . . . . . . . . . . . . . . . . . . . . 128
Universal Remote System Operation . . . 130

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-15170041) - 2022 - CRC - 10/6/21
110 Instruments and Controls
If the light comes on while driving, pull off
the road and stop carefully. If equipped with
electric brake boost, vehicle speed may be
limited when the brake system warning
light comes on. The brake pedal might be
harder to push, or the brake pedal may go
closer to the floor. It could take longer to
stop. If the light is still on, have the vehicle
towed for service. SeeTowing the Vehicle
0 334.
{Warning
The brake system might not be working
properly if the brake system warning
light is on. Driving with the brake system
warning light on can lead to a crash.
If the light is still on after the vehicle has
been pulled off the road and carefully
stopped, have the vehicle towed for
service.
Electric Parking Brake Light
MetricEnglish Base Level
English Uplevel
This light comes on when the parking brake
is applied. If the light continues flashing
after the parking brake is released, or while
driving, there is a problem with the Electric
Parking Brake system. A message may also
display in the Driver Information
Center (DIC).
If the light does not come on, or remains
flashing, see your dealer.
Service Electric Parking Brake
Light (Uplevel and Midlevel
Cluster Only)
This light should come on briefly when the
vehicle is turned on. If it does not come on,
have it fixed so it will be ready to warn if
there is a problem.
If this light stays on or comes on while
driving, there is a problem with the Electric
Parking Brake (EPB). Take the vehicle to a
dealer as soon as possible. In addition to the
parking brake, other safety functions that
utilize the EPB may also be degraded.
A message may also display in the Driver
Information Center (DIC). See Electric Parking
Brake 0225.

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-15170041) - 2022 - CRC - 10/6/21
Infotainment System 181
For a pushbutton start system:1. Start the engine.
2. For automatic transmissions, the vehicle must be in P (Park). For manual
transmissions, the vehicle must be
stopped with the parking brake set.
3. From the Settings menu, touch Vehicle and then Teen Driver.
4. Enter the PIN.
5. Place the Remote Keyless Entry (RKE) transmitter key you wish to register in
the transmitter pocket. The key does not
need to be the one that started the
vehicle. See Remote Keyless Entry (RKE)
System Operation 07for transmitter
pocket location.
6. From the Teen Driver menu, touch Setup Keys.
.If the transmitter key has not
previously been registered, the option
to add the key displays. Touch Add
and a confirmation message displays.
Teen Driver restrictions will be
applied whenever this key is used to
operate the vehicle.
.If the transmitter key has already
been registered, the option to
remove the key displays. If Remove is touched, the transmitter key is no
longer registered. A confirmation
message displays, and Teen Driver
restrictions will not be applied if this
transmitter key is used to operate
the vehicle.
In vehicles with a pushbutton start system,
if a Teen Driver and a non-Teen Driver key
are both present at start up, the vehicle will
recognize the non-Teen Driver key to start
the vehicle. The Teen Driver settings will not
be active.
For a keyed ignition system: 1. Start the engine.
2. For automatic transmissions, the vehicle must be in P (Park). For manual
transmissions, the vehicle must be
stopped with the parking brake set.
3. From the Settings menu, touch Vehicle and then Teen Driver.
4. Enter the PIN.
5. Touch Setup Keys. The system displays instructions for registering or
unregistering a key. A confirmation
message displays. Manage Settings
Audio Volume Limit :
Allows the audio
volume limit to be turned on or off. Touch
Set Audio Volume Limit to choose the
maximum allowable audio volume level.
Set Audio Volume Limit : Allows a
maximum radio volume to be set. Use the
arrows to choose the maximum allowable
level for the audio volume.
Teen Driver Speed Limiter : Limits the
maximum speed of the vehicle. When the
speed limiter is turned on and the vehicle is
started with a Teen Driver key, the DIC
displays a message that the top speed is
limited.
On certain vehicles, when the Speed Limiter
is turned ON, the vehicle’s maximum
acceleration will be limited. The DIC will
display a message that the acceleration is
limited.
Teen Driver Speed Warning : Allows the
speed warning to be turned on or off. Touch
Set Teen Driver Speed Warning to set the
warning speed.

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-15170041) - 2022 - CRC - 10/6/21
Driving and Operating 199
Driving and Operating
Driving Information
Driving for Better Fuel Economy . . . . . . 200
Distracted Driving . . . . . . . . . . . . . . . . . . . . . 200
Defensive Driving . . . . . . . . . . . . . . . . . . . . . . 201
Impaired Driving . . . . . . . . . . . . . . . . . . . . . . . 201
Control of a Vehicle . . . . . . . . . . . . . . . . . . . 201
Braking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201
Steering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202
Off-Road Recovery . . . . . . . . . . . . . . . . . . . . . 203
Loss of Control . . . . . . . . . . . . . . . . . . . . . . . . 203
Off-Road Driving . . . . . . . . . . . . . . . . . . . . . . . 203
Driving on Wet Roads . . . . . . . . . . . . . . . . . 207
Hill and Mountain Roads . . . . . . . . . . . . . . 207
Winter Driving . . . . . . . . . . . . . . . . . . . . . . . . 208
If the Vehicle Is Stuck . . . . . . . . . . . . . . . . . 209
Vehicle Load Limits . . . . . . . . . . . . . . . . . . . 209
Starting and Operating
New Vehicle Break-In . . . . . . . . . . . . . . . . . . 212
Ignition Positions . . . . . . . . . . . . . . . . . . . . . . 213
Starting the Engine . . . . . . . . . . . . . . . . . . . . 214
Stop/Start System . . . . . . . . . . . . . . . . . . . . . 215
Engine Heater . . . . . . . . . . . . . . . . . . . . . . . . . 216
Retained Accessory Power (RAP) . . . . . . . 217
Shifting Into Park . . . . . . . . . . . . . . . . . . . . . . 218
Shifting out of Park . . . . . . . . . . . . . . . . . . . 219Parking over Things That Burn . . . . . . . . . 219
Active Fuel Management . . . . . . . . . . . . . . 219
Extended Parking . . . . . . . . . . . . . . . . . . . . . . 219
Engine Exhaust
Engine Exhaust . . . . . . . . . . . . . . . . . . . . . . . . 220
Running the Vehicle While Parked . . . . . 220
Automatic Transmission
Automatic Transmission . . . . . . . . . . . . . . . 220
Manual Mode . . . . . . . . . . . . . . . . . . . . . . . . . 223
Drive Systems
All-Wheel Drive . . . . . . . . . . . . . . . . . . . . . . . . 224
Brakes
Electric Brake Boost . . . . . . . . . . . . . . . . . . . 224
Antilock Brake System (ABS) . . . . . . . . . . 224
Electric Parking Brake . . . . . . . . . . . . . . . . . . 225
Brake Assist . . . . . . . . . . . . . . . . . . . . . . . . . . . 226
Hill Start Assist (HSA) . . . . . . . . . . . . . . . . . 226
Ride Control Systems
Traction Control/Electronic Stability
Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227
Hill Descent Control (HDC) . . . . . . . . . . . . . 228
Driver Mode Control . . . . . . . . . . . . . . . . . . 229
Cruise Control
Cruise Control . . . . . . . . . . . . . . . . . . . . . . . . . 230
Adaptive Cruise Control (Advanced) . . . . 232
Driver Assistance Systems
Driver Assistance Systems . . . . . . . . . . . . . 240
Assistance Systems for Parking or Backing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 241
Rear Vision Camera (RVC) . . . . . . . . . . . . . . 241
Surround Vision System . . . . . . . . . . . . . . . 242
Park Assist . . . . . . . . . . . . . . . . . . . . . . . . . . . . 244
Rear Cross Traffic Alert (RCTA) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245
Assistance Systems for Driving . . . . . . . . 246
Forward Collision Alert (FCA) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 246
Automatic Emergency Braking (AEB) . . . . . . . . . . . . . . . . . . . . . . . . 248
Front Pedestrian Braking (FPB) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249
Side Blind Zone Alert (SBZA) . . . . . . . . . . . 251
Lane Change Alert (LCA) . . . . . . . . . . . . . . . 251
Lane Keep Assist (LKA) . . . . . . . . . . . . . . . . . 253
Fuel
Top Tier Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . 255
Recommended Fuel . . . . . . . . . . . . . . . . . . . . 255
Prohibited Fuels . . . . . . . . . . . . . . . . . . . . . . . 255
Fuels in Foreign Countries . . . . . . . . . . . . . 256
Fuel Additives . . . . . . . . . . . . . . . . . . . . . . . . . 256
Filling the Tank . . . . . . . . . . . . . . . . . . . . . . . . 256
Filling a Portable Fuel Container . . . . . . . 257

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-15170041) - 2022 - CRC - 10/6/21
202 Driving and Operating
Helpful braking tips to keep in mind include:
.Keep enough distance between you and
the vehicle in front of you.
.Avoid needless heavy braking.
.Keep pace with traffic.
If the engine ever stops while the vehicle is
being driven, brake normally but do not
pump the brakes. Doing so could make the
pedal harder to push down. If the engine
stops, there will be some power brake assist
but it will be used when the brake is
applied. Once the power assist is used up, it
can take longer to stop and the brake pedal
will be harder to push.
Steering
Electric Power 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.
The vehicle has electric power steering.
It does not have power steering fluid.
Regular maintenance is not required.
If power steering assist is lost due to a
system malfunction, the vehicle can be
steered, but may require increased effort.
If the steering assist is used for an extended
period of time while the vehicle is not
moving, power assist may be reduced.
If the steering wheel is turned until it
reaches the end of its travel and is held
against that position for an extended period
of time, power steering assist may be
reduced. Normal use of the power steering assist
should return when the system cools down.
See your dealer if there is a problem.
Curve Tips
.Take curves at a reasonable speed.
.Reduce speed before entering a curve.
.Maintain a reasonable steady speed
through the curve.
.Wait until the vehicle is out of the curve
before accelerating gently into the
straightaway.
Steering in Emergencies
.There are some situations when steering
around a problem may be more effective
than braking.
.Holding both sides of the steering wheel
allows you to turn 180 degrees without
removing a hand.
.The Antilock Brake System (ABS) allows
steering while braking.

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-15170041) - 2022 - CRC - 10/6/21
Driving and Operating 205
When driving on hills:
.Use a low gear and keep a firm grip on
the steering wheel.
.Maintain a slow speed.
.When possible, drive straight up or down
the hill.
.Slow down when approaching the top of
the hill.
.Use headlamps even during the day to
make the vehicle more visible.
{Warning
Driving to the top of a hill at high speed
can cause a crash. There could be a
drop-off, embankment, cliff, or even
another vehicle. You could be seriously
injured or killed. As you near the top of a
hill, slow down and stay alert.
.Never go downhill forward or backward
with the transmission in N (Neutral). The
brakes could overheat and you could lose
control.
.When driving down a hill, keep the
vehicle headed straight down. Use a low
gear because the engine will work with
the brakes to slow the vehicle and help
keep the vehicle under control.
{Warning
Heavy braking when going down a hill
can cause your brakes to overheat and
fade. This could cause loss of control and
you or others could be injured or killed.
Apply the brakes lightly when descending
a hill and use a low gear to keep vehicle
speed under control.
If the vehicle stalls on a hill: 1. Apply the brakes to stop the vehicle, and then apply the parking brake.
2. Shift into P (Park) and then restart the engine.
.If driving uphill when the vehicle
stalls, shift to R (Reverse), release the
parking brake, and back
straight down.
.Never try to turn the vehicle around.
If the hill is steep enough to stall the
vehicle, it is steep enough to cause it
to roll over.
.If you cannot make it up the hill,
back straight down the hill.
.Never back down a hill in N (Neutral)
using only the brake.
.The vehicle can roll backward quickly
and you could lose control.
.If driving downhill when the vehicle
stalls, shift to a lower gear, release
the parking brake, and drive straight
down the hill.
3. If the vehicle cannot be restarted after stalling, set the parking brake, shift into
P (Park), and turn the vehicle off.
3.1. Leave the vehicle and seek help.
3.2. Stay clear of the path the vehicle
would take if it rolled downhill.
.Avoid turns that take the vehicle across
the incline of the hill. A hill that can be
driven straight up or down might be too
steep to drive across. Driving across an
incline puts more weight on the downhill
wheels which could cause a downhill slide
or a rollover.
.Surface conditions can be a problem.
Loose gravel, muddy spots, or even wet
grass can cause the tires to slip sideways,
downhill. If the vehicle slips sideways, it
can hit something that will trip it —a
rock, a rut, etc. —and roll over.

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-15170041) - 2022 - CRC - 10/6/21
214 Driving and Operating
If the vehicle must be shut off in an
emergency:1. Brake using a firm and steady pressure. Do not pump the brakes repeatedly. This
may deplete power assist, requiring
increased brake pedal force.
2. 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.
3. Come to a complete stop and shift to P (Park).
4. Set the parking brake. See Electric
Parking Brake 0225. And press ENGINE
START/STOP to turn the vehicle off.
{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.
If the vehicle cannot be pulled over, and
must be shut off while driving, press and
hold ENGINE START/STOP for longer than
two seconds, or press twice in five seconds. 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 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 the button once will place the
ignition system in ON/RUN/START. Once
engine cranking begins, release the button.
Engine cranking will continue until the
engine starts. See Starting the Engine 0214.
The ignition will then remain in ON/RUN.
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 button for more than
five seconds will place the vehicle in Service Mode. The instruments and audio systems
will operate as they do in ON/RUN, but the
vehicle will not be able to be driven. The
engine will not start in Service Mode. Press
the button again to turn the vehicle off.
Starting the Engine
Shift the vehicle into 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.
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 0268.

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-15170041) - 2022 - CRC - 10/6/21
218 Driving and Operating
Shifting Into Park
{Warning
It can be dangerous to get out of the
vehicle if the vehicle is not in P (Park)
with the parking brake set. The vehicle
can roll. If you have left the engine
running, the vehicle can move suddenly.
You or others could be injured. To be
sure the vehicle will not move, even
when you are on fairly level ground, use
the steps that follow. If you are pulling a
trailer, seeDriving Characteristics and
Towing Tips 0258.
To shift into P (Park): 1. Hold the brake pedal down and set the parking brake. See Electric Parking Brake
0 225.
2. Press the P (Park) switch on the center console.
3. Press ENGINE START/STOP to turn the engine off.
If the vehicle is shifted into P (Park) on a
hill, the electric parking brake (EPB) may
apply automatically. The driver may not be able to release the EPB using the EPB
switch. It should automatically release when
the vehicle is shifted out of P (Park).Leaving the Vehicle with the Engine
Running
{Warning
It can be dangerous to leave the vehicle
with the engine running. It could
overheat and catch fire.
It is dangerous to get out of the vehicle
if the vehicle is not in P (Park) with the
parking brake set. The vehicle can roll.
Do not leave the vehicle when the engine
is running. If you have left the engine
running, the vehicle can move suddenly.
You or others could be injured. To be
sure the vehicle will not move, even
when you are on fairly level ground,
always set the parking brake and shift
the vehicle to P (Park). See
Shifting Into
Park 0218. If you are towing a trailer,
see Driving Characteristics and Towing
Tips 0258. If you have to leave the vehicle with the
engine running, the vehicle must be in
P (Park) with the parking brake set.
Confirm that the vehicle is in P (Park).
Torque Lock
Torque lock is when the weight of the
vehicle puts too much force on the parking
pawl in the transmission. This happens when
parking on a hill and shifting the
transmission into P (Park) is not done
properly and then it is difficult to shift out
of P (Park). To prevent torque lock, set the
parking brake and then shift into P (Park). To
find out how, see
“Shifting Into Park” listed
previously.
On certain steep grades, the transmission
will automatically set the parking brake to
prevent torque lock.
If torque lock does occur, the vehicle may
need to be pushed uphill by another vehicle
to relieve the parking pawl pressure, so you
can shift out of P (Park).