2002 GMC ENVOY tow

1-7
The rear seatback handles
are located on the outboard
side of the rear seatbacks.
Pull the seatback toward you as you lift up on the
handle. The head restraint will automatically fold out of
the way when the seatback is folded down.
To raise the seatbacks, lift up the seatbacks and push
on them until they lock into the upright position. Push
and pull on the seatbacks to make sure that they are
latched securely. Then fold the bottom seat cushion
back into place.
To return the head restraint to the upright position, reach
behind the seat and pull the restraint up until it locks
into place. Push and pull on the head restraint to make
sure that it is latched securely.

1-27
In any particular crash, no one can say whether an air
bag should have inflated simply because of the damage
to a vehicle or because of what the repair costs were.
For frontal air bags, inflation is determined by the angle
of the impact and how quickly the vehicle slows down
in frontal and near
-frontal impacts. For side impact air
bags, inflation is determined by the location and severity
of the impact.
The air bag system is designed to work properly under
a wide range of conditions, including off
-road usage.
Observe safe driving speeds, especially on rough terrain.
As always, wear your safety belt. See ªOff
-Road
Drivingº in the Index for more tips on off
-road driving.
What makes an air bag inflate?
In an impact of sufficient severity, the air bag sensing
system detects that the vehicle is in a crash. For both
frontal and side impact air bags, the sensing system
triggers a release of gas from the inflator, which inflates
the air bag. The inflator, air bag and related hardware
are all part of the air bag modules inside the steering
wheel, instrument panel and the side of the front
seatbacks closest to the door.How does an air bag restrain?
In moderate to severe frontal or near frontal collisions,
even belted occupants can contact the steering wheel
or the instrument panel. In moderate to severe side
collisions, even belted occupants can contact the inside
of the vehicle. The air bag supplements the protection
provided by safety belts. Air bags distribute the force of
the impact more evenly over the occupant's upper body,
stopping the occupant more gradually. But the frontal
air bags would not help you in many types of collisions,
including rollovers, rear impacts, and many side impacts,
primarily because an occupant's motion is not toward
the air bag. Side impact air bags would not help you in
many types of collisions, including frontal or near frontal
collisions, rollovers, and rear impacts, primarily because
an occupant's motion is not toward those air bags. Air
bags should never be regarded as anything more than a
supplement to safety belts, and then only in moderate to
severe frontal or near
-frontal collisions for the driver's
and right front passenger's frontal air bags, and only in
moderate to severe side collisions for the driver's and
right front passenger's side impact air bags.

1-39
Restraint Systems for Children
An infant car bed (A), a special bed made for use in a
motor vehicle, is an infant restraint system designed to
restrain or position a child on a continuous flat surface.
Make sure that the infant's head rests toward the center
of the vehicle.
A rear-facing infant seat (B) provides restraint with
the seating surface against the back of the infant. The
harness system holds the infant in place and, in a crash,
acts to keep the infant positioned in the restraint.

1-55
CAUTION:
Never do this.
Here two children are wearing the same belt. The
belt can't properly spread the impact forces. In a
crash, the two children can be crushed together
and seriously injured. A belt must be used by
only one person at a time.
Q:What if a child is wearing a lap-shoulder belt,
but the child is so small that the shoulder belt is
very close to the child's face or neck?
A:If the child is sitting in a seat next to a window,
move the child toward the center of the vehicle. If
the child is sitting in the center rear seat passenger
position, move the child toward the safety belt
buckle. In either case, be sure that the shoulder belt
still is on the child's shoulder, so that in a crash the
child's upper body would have the restraint that
belts provide. If the child is sitting in a rear seat
outside position, see ªRear Safety Belt Comfort
Guidesº in the Index.

2-7
Power Door Locks
The power door lock
switches are located on
the driver's and front
passenger's armrests.
Remove the ignition key and press the lock symbol to
lock all of the doors at once. To unlock the doors, press
the other side of the switch.
Programmable Automatic Door Locks
Your vehicle is equipped with an automatic lock/unlock
feature which enables you to program your vehicle's
power door locks. You can program this feature through
the Driver Information Center (DIC), or by the
following method.Programmable Locking Feature
The following is the list of available programming options:

Mode 1: All doors lock when the transmission is
shifted into gear.

Mode 2: All doors lock when the vehicle speed is
greater than 8 mph (13 km/h).

Mode 3: No automatic door locking.
The automatic door locks were pre
-programmed at the
factory to lock all the doors when the transmission is
shifted into gear. The following instructions detail how
to program your door locks differently than the factory
setting. Choose one of the three programming options
listed above before entering the program mode.
To enter the program mode you need to do
the following:
1. Begin with the ignition off. Then pull the turn
signal/multifunction lever toward you and hold it
there while you perform the next step.
2. Turn the key to RUN and LOCK twice. Then, with
the key in LOCK, release the turn signal/multifunction
lever. Once you do this, you will hear the lock switch
lock and unlock, the horn will chirp twice, and a
30 second program timer will begin.

2-8
3. You are now ready to program the automatic door
locks. Select one of the three programming options
listed above, and press the lock side of the power
door lock switch to cycle through the lock options.
You will have 30 seconds to begin programming.
If you exceed the 30 second limit, the locks will
automatically lock and unlock and the horn will
chirp twice to indicate that you have left the program
mode. If this occurs, repeat the procedure beginning
with Step 1 to re
-enter the programming mode.
You can exit the program mode any time by turning the
ignition to RUN (the locks will automatically lock and
unlock and the horn will chirp twice to indicate that you
are leaving the program mode). If the lock/unlock
switches are not pressed while in the programming
mode, the current auto lock/unlock setting will not
be modified.
See your dealer for more information.
Programmable Unlocking Feature
The following is the list of available programming options:

Mode 1: Driver's door unlocks when the
transmission is shifted into PARK (P).
Mode 2: All doors unlock when the transmission is
shifted into PARK (P)

Mode 3: All doors unlock when the key is removed
from the ignition.

Mode 4: No automatic door unlock.
The automatic door locks were pre
-programmed at the
factory to unlock the driver's door once the transmission
is shifted to PARK (P). The following instructions detail
how to program your door locks differently than the
factory setting. Choose one of the four programming
options listed above before entering the program mode.
To enter the program mode you need to do
the following:
1. Begin with the ignition off. Then pull the turn
signal/multifunction lever toward you and hold it
there while you perform the next step.
2. Turn the key to RUN and LOCK twice. Then, with the
key in LOCK, release the turn signal/multifunction
lever. Once you do this, you will hear the lock switch
lock and unlock, the horn will chirp twice, and a
30 second program timer will begin.

2-18
New Vehicle ªBreak-Inº
NOTICE:
Your vehicle doesn't need an elaborate
ªbreak
-in.º But it will perform better in the long
run if you follow these guidelines:

Keep your speed at 55 mph (88 km/h) or
less for the first 500 miles (805 km).

Don't drive at any one speed
-- fast or
slow
-- for the first 500 miles (805 km).
Don't make full
-throttle starts.

Avoid making hard stops for the first
200 miles (322 km) or so. During this time
your new brake linings aren't yet broken
in. Hard stops with new linings can mean
premature wear and earlier replacement.
Follow this breaking
-in guideline every
time you get new brake linings.

Don't tow a trailer during break
-in.
See ªTowing a Trailerº in the Index for
more information.
Ignition Positions
Use the key to turn the ignition switch to
four different positions.

2-23
Automatic Transmission Operation
There are several different positions for your shift lever.
PARK (P): This position locks the rear wheels. It's the
best position to use when you start the engine because
your vehicle can't move easily.
CAUTION:
It is dangerous to get out of your vehicle if the
shift lever is not fully in PARK (P) with the
parking brake firmly set. Your vehicle can roll.
Don't leave your vehicle when the engine is
running unless you have to. If you have left the
engine running, the vehicle can move suddenly.
You or others could be injured. To be sure your
vehicle won't move, even when you're on fairly
level ground, always set your parking brake and
move the shift lever to PARK (P).
CAUTION: (Continued)
CAUTION: (Continued)
If you have four-wheel drive, your vehicle will be
free to roll
-- even if your shift lever is in
PARK (P)
-- if your transfer case is in
NEUTRAL. So, be sure the transfer case is in a
drive gear
-- not in NEUTRAL. See ªFour-Wheel
Drive (Automatic Transfer Case)º in the Index.
See ªShifting Into PARK (P)º in the Index. If
you're pulling a trailer, see ªTowing a Trailerº in
the Index.
Ensure the shift lever is fully in PARK (P) before
starting the engine. Your vehicle has an automatic
transmission shift lock control system. You have to fully
apply the regular brakes before you can shift from
PARK (P) when the ignition key is in RUN. If you
cannot shift out of PARK (P), ease pressure on the shift
lever
-- press the button on the shift lever and push the
shift lever all the way into PARK (P) as you maintain
brake application. Then move the shift lever into the
gear you wish. See ªShifting Out of PARK (P)º in
the Index.