2003 GMC ENVOY ECU

5. Pull the rest of the shoulder belt all the way out of
the retractor to set the lock.6. To tighten the belt, feed the shoulder belt back into
the retractor while you push down on the child
restraint. You may ®nd it helpful to use your knee to
push down on the child restraint as you tighten
the belt.
7. Push and pull the child restraint in different
directions to be sure it is secure.
To remove the child restraint, just unbuckle the vehicle's
safety belt and let it go back all the way. The safety
belt will move freely again and be ready to work for an
adult or larger child passenger.
1-50

{CAUTION:
Both frontal and side impact air bags in¯ate
with great force, faster than the blink of an
eye. If you're too close to an in¯ating air bag,
as you would be if you were leaning forward, it
could seriously injure you. Safety belts
helpkeep you in position for air bag in¯ation
before and during a crash. Always wear your
safety belt, even with frontal air bags. The
driver should sit as far back as possible while
still maintaining control of the vehicle. Front
occupants should not lean on or sleep against
the door.
{CAUTION:
Anyone who is up against, or very close to,
any air bag when it in¯ates can be seriously
injured or killed. Air bags plus
lap-shoulderbelts offer the best protection for
adults, but not for young children and infants.
Neither the vehicle's safety belt system nor its
air bag system is designed for them. Young
children and infants need the protection that a
child restraint system can provide. Always
secure children properly in your vehicle. To
read how, see the part of this manual called
ªOlder Childrenº or ªInfants and Young
Children.º
1-53

Keys...............................................................2-3
Remote Keyless Entry System.........................2-5
Remote Keyless Entry System Operation...........2-6
Doors and Locks.............................................2-8
Door Locks....................................................2-8
Power Door Locks..........................................2-9
Delayed Locking.............................................2-9
Programmable Automatic
Door Locks...............................................2-10
Rear Door Security Locks..............................2-12
Lockout Protection........................................2-12
Leaving Your Vehicle....................................2-12
Liftgate/Liftglass............................................2-13
Windows........................................................2-14
Power Windows............................................2-15
Sun Visors...................................................2-16
Theft-Deterrent Systems..................................2-17
Content Theft-Deterrent.................................2-17
Passlock
ž....................................................2-18
Starting and Operating Your Vehicle................2-19
New Vehicle Break-In....................................2-19
Ignition Positions..........................................2-19Starting Your Engine.....................................2-21
Engine Coolant Heater..................................2-22
Automatic Transmission Operation...................2-23
Four-Wheel Drive..........................................2-25
Parking Brake..............................................2-28
Shifting Into Park (P).....................................2-29
Shifting Out of Park (P).................................2-31
Parking Over Things That Burn.......................2-32
Engine Exhaust............................................2-33
Running Your Engine While You Are Parked. . . .2-33
Mirrors...........................................................2-35
Automatic Dimming Rearview Mirror with
OnStar
žand Compass...............................2-35
Outside Manual Mirrors..................................2-37
Outside Power Mirrors...................................2-37
Outside Convex Mirror...................................2-38
Outside Heated Mirrors..................................2-38
Outside Automatic Dimming Mirror with Curb
View Assist..............................................2-38
OnStar
žSystem.............................................2-39
HomeLinkžTransmitter...................................2-40
Programming the HomeLinkžTransmitter.........2-41
Section 2 Features and Controls
2-1

Rear Door Security Locks
Your vehicle may have this feature. You can lock the
rear doors so they can't be opened from the inside
by passengers. To use one of these locks do the
following:
1. Open one of the rear doors. You will ®nd a
security lock lever located on the inside edge
of each rear door.
2. Move the lever down to
engage the safety lock.
Move the lever up to
disengage the
safety lock.
3. Close the door.
4. Do the same thing to the other rear door.The rear doors of your vehicle cannot be opened from
the inside while this feature is in use. If you want to open
the rear door while the security lock is on, unlock the
door and open the door from the outside.
Lockout Protection
This feature stops the power door locks from locking
when the key is in the ignition and a door is open
to protect you from locking your key in the vehicle.
If the power lock switch is pressed when a door is open
and the key is in the ignition, all the doors will lock
and then the driver's door will unlock.
Leaving Your Vehicle
If you are leaving the vehicle, take your key, open your
door and set the lock from inside. Then get out and
close the door.
2-12

Theft-Deterrent Systems
Vehicle theft is big business, especially in some cities.
Although your vehicle has a number of theft-deterrent
features, we know that nothing we put on it can make it
impossible to steal. However, there are ways you
can help.
Content Theft-Deterrent
Your vehicle may be equipped with a content
theft-deterrent alarm system.
Here's how to operate the system:
1. Open the door.
2. Lock the door with the power door lock switch or
the remote keyless entry transmitter. The
SECURITY light should ¯ash.3. Close all doors. The SECURITY light should go off
after approximately 30 seconds. The alarm is not
armed until the SECURITY light goes off.
If a locked door is opened without the key or the remote
keyless entry transmitter, the alarm will go off. The
headlamps and parking lamps will ¯ash for two minutes,
and the horn will sound for 30 seconds, then will turn
off to save the battery power.
Remember, the theft-deterrent system won't activate if
you lock the doors with a key or use the manual
door lock. It activates only if you use a power door lock
switch with the door open, or with the remote keyless
entry transmitter. You should also remember that
you can start your vehicle with the correct ignition key if
the alarm has been set off.
Here's how to avoid setting off the alarm by accident:
·If you don't want to activate the theft-deterrent
system, the vehicle should be locked with the door
key
afterthe doors are closed.
·Always unlock a door with a key, or use the remote
keyless entry transmitter. Unlocking a door any
other way will set off the alarm.
If you set off the alarm by accident, unlock any door with
the key. You can also turn off the alarm by pressing
unlock on the remote keyless entry transmitter. The alarm
won't stop if you try to unlock a door any other way. United StatesCanada
2-17

Testing the Alarm
The alarm can be tested by following these steps:
1. From inside the vehicle, lower the driver's window
and open the driver's door.
2. Activate the system by locking the doors with the
power door lock switch while the door is open, or
with the remote keyless entry transmitter.
3. Get out of the vehicle, close the door and wait for
the SECURITY light to go out.
4. Then reach in through the window, unlock the door
with the manual door lock and open the door. This
should set off the alarm.
When the alarm is set the power door unlock switch is
not operational.
If the alarm does not sound when it should but the
headlamps ¯ash, check to see if the horn works. The
horn fuse may be blown. To replace the fuse, see
Fuses
and Circuit Breakers on page 5-90.
If the alarm does not sound or the headlamps do not
¯ash, the vehicle should be serviced by your dealer.
Passlockž
Your vehicle is equipped with the
Passlockžtheft-deterrent system.
Passlockžis a passive theft-deterrent system.
Passlockženables fuel if the ignition lock cylinder is
turned with a valid key. If a correct key is not used or the
ignition lock cylinder is tampered with, the fuel system
is disabled and the vehicle will not start.
During normal operation, the security light will turn off
approximately ®ve seconds after the key is turned
to RUN.
If the engine stalls and the security light ¯ashes, wait
about 10 minutes until the light stops ¯ashing before
trying to restart the engine. Remember to release
the key from START as soon as the engine starts.
If the engine does not start after three tries, the vehicle
needs service.
If the engine is running and the security light comes on,
you will be able to restart the engine if you turn the
engine off. However, your Passlock
žsystem is
not working properly and must be serviced by your
dealer. Your vehicle is not protected by Passlock
žat this
time. You may also want to check the fuse. See
Fuses and Circuit Breakers on page 5-90. See your
dealer for service.
In an emergency, call the GM Roadside Assistance
Center. See
Roadside Assistance Program on page 7-5.
2-18

OnStaržSystem
Your vehicle may have this feature. OnStaržuses
global positioning system (GPS) satellite technology,
wireless communications, and state of the art call
centers to provide you with a wide range of safety,
security, information and convenience services.
A complete OnStar
žuser's guide and the terms and
conditions of the OnStaržSubscription Service
Agreement are included in your OnStarž-equipped
vehicle's glove box literature. For more information, visit
www.onstar.com, contact OnStar
žat 1-888-4-ONSTAR
(1-888-466-7827), or press the blue OnStaržbutton
to speak to an OnStaržadvisor 24 hours a day, 7 days
a week.
A completed Subscription Service Agreement is required
prior to delivery of OnStar
žservices and prepaid
calling minutes are also required for OnStaržPersonal
Calling and OnStaržVirtual Advisor use. Terms and
conditions of the Subscription Service Agreement can be
found at www.onstar.com.
OnStaržServices
One of the following plans is normally included for a
speci®c duration with each vehicle equipped with
OnStar
ž. You can upgrade or extend your OnStarž
service plan to meet your needs.
Safe and Sound Plan
·
Automatic Noti®cation of Air Bag Deployment
·Emergency Services
·Roadside Assistance
·Stolen Vehicle Assistance
·AccidentAssist
·Remote Door Unlock
·Remote Diagnostics
·Online Concierge
Directions and Connections Plan
·
All Safe and Sound Plan services
·Route Support
·RideAssist
·Information and Convenience Services
2-39

Luxury and Leisure Plan
·
All Directions and Connections Plan services
·Personal Concierge
OnStaržPersonal Calling
With OnStaržPersonal Calling, you have a safer way to
stay connected while driving. It's a hands-free wireless
phone that's integrated into your vehicle. You can place
calls nationwide using voice-activated dialing with no
contracts and no additional roaming charges. To ®nd out
more about OnStar
žPersonal Calling, refer to the
OnStaržowner's guide in your vehicle's glove box, or
call OnStaržat 1-888-4-ONSTAR (1-888-466-7827).
OnStaržVirtual Advisor
With OnStaržVirtual Advisor you can listen to your
favorite news, entertainment and information topics,
such as traffic and weather reports, stock quotes
and sports scores. You listen to your e-mail through
your vehicle's speakers, and reply with your hands on
the wheel and your eyes on the road.
HomeLinkžTransmitter
HomeLinkž, a combined universal transmitter and
receiver, provides a way to replace up to three
hand-held transmitters used to activate devices such as
gate operators, garage door openers, entry door
locks, security systems and home lighting. Additional
HomeLink
žinformation can be found on the internet at
www.homelink.com or by calling 1- 800- 355- 3515.
If your vehicle is equipped with the HomeLink
ž
Transmitter, it complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions:
(1) this device may not cause harmful interference, and
(2) this device must accept any interference received,
including interference that may cause undesired
operation.
2-40