2007 GMC ENVOY DENALI instrument panel

{CAUTION:
If the airbag readiness light in the
instrument panel cluster ever comes on
and stays on, it means that something
may be wrong with the airbag system.
If this ever happens, have the vehicle
serviced promptly, because an
adult-size person sitting in the right
front passenger’s seat may not have
the protection of the frontal airbag.
SeeAirbag Readiness Light on page 201
for more on this, including important
safety information.Aftermarket equipment, such as seat covers, can
affect how well the passenger sensing system
operates. You may want to consider not using
seat covers or other aftermarket equipment if
your vehicle has the passenger sensing system.
SeeAdding Equipment to Your Airbag-Equipped
Vehicle on page 89for more information about
modications that can affect how the system
operates.
{CAUTION:
Stowing of articles under the passenger’s
seat or between the passenger’s seat
cushion and seatback may interfere with
the proper operation of the passenger
sensing system.
87

Adding Equipment to Your
Airbag-Equipped Vehicle
Q:Is there anything I might add to the front
or sides of the vehicle that could keep the
airbags from working properly?
A:Yes. If you add things that change your
vehicle’s frame, bumper system, height,
front end or side sheet metal, they may keep
the airbag system from working properly.
Also, the airbag system may not work properly
if you relocate any of the airbag sensors.
If you have any questions about this,
you should contact Customer Assistance
before you modify your vehicle. The phone
numbers and addresses for Customer
Assistance are in Step Two of the Customer
Satisfaction Procedure in this manual.
SeeCustomer Satisfaction Procedure
on page 526.
Q:Because I have a disability, I have to get
my vehicle modied. How can I nd out
whether this will affect my airbag system?
A:Changing or moving any parts of the
front seats, safety belts, the airbag sensing
and diagnostic module, steering wheel,
instrument panel, the inside review mirror,
ceiling headliner, ceiling and pillar garnish trim,
roof-mounted airbag modules, or airbag
wiring can affect the operation of the airbag
system. If you have questions, call Customer
Assistance. The phone numbers and
addresses for Customer Assistance are
in Step Two of the Customer Satisfaction
Procedure in this manual. SeeCustomer
Satisfaction Procedure on page 526.
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Restraint System Check
Checking the Restraint Systems
Now and then, make sure the safety belt reminder
light and all your belts, buckles, latch plates,
retractors and anchorages are working properly.
Look for any other loose or damaged safety
belt system parts. If you see anything that might
keep a safety belt system from doing its job,
have it repaired. Keep safety belts clean and dry.
SeeCare of Safety Belts on page 485for more
information.
Torn or frayed safety belts may not protect you in
a crash. They can rip apart under impact forces.
If a belt is torn or frayed, get a new one right away.Also look for any opened or broken airbag
covers, and have them repaired or replaced.
The airbag system does not need regular
maintenance.
Notice:If you damage the covering for the
driver’s or the right front passenger’s airbag,
or the side impact airbag covering on the
ceiling near the side windows, the airbag may
not work properly. You may have to replace
the airbag module in the steering wheel, both
the airbag module and the instrument panel
for the right front passenger’s airbag, or
side impact airbag module and ceiling covering
for roof-mounted rollover airbags (if equipped).
Do not open or break the airbag coverings.
90

Liftgate/Liftglass
{CAUTION:
It can be dangerous to drive with the
liftgate or liftglass open because carbon
monoxide (CO) gas can come into your
vehicle. You cannot see or smell CO.
It can cause unconsciousness and even
death. If you must drive with the liftgate
open or if electrical wiring or other cable
connections must pass through the seal
between the body and the liftgate or
liftglass:
Make sure all other windows are shut.
Turn the fan on your climate control
system to its highest speed and select
the control setting that will force
outside air into your vehicle. See
“Climate Control System” in the Index.
If you have air outlets on or under the
instrument panel, open them all the
way. SeeEngine Exhaust on page 131.
Liftgate Release
To unlock the liftgate, use the power door lock
switch or the remote keyless entry transmitter.
SeeRemote Keyless Entry (RKE) System
Operation on page 98. The liftglass will also unlock
when the liftgate is unlocked.
Press the button on the liftglass to open it.
To open the entire liftgate, lift the handle located
in the center of the liftgate. When the liftgate
is opened, the liftglass will lock after a short delay.
Emergency Release for Opening
Liftgate
1. Remove the trim plug, located on the inside of
the liftgate in the center, to expose the access
hole in the trim panel.
2. Use a tool to reach through the access hole in
the trim panel.
3. Pry the left release lever up to the unlock
position. Pry the right release lever up to
unlatch the liftgate.
4. Reinstall the trim plug.
106

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.
Content Theft-Deterrent
Your vehicle may have a content theft-deterrent
alarm system.
The security light is
located on the
instrument panel cluster.To operate the system, do the following:
1. Open the door.
2. Lock the door with the power door lock switch
or the Remote Keyless Entry (RKE)
transmitter. The security light should ash.
3. Close all doors. The security light should turn
off after about 30 seconds. The alarm is not
armed until the security light turns off.
If a locked door is opened without the key or
the RKE 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 will not
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 RKE transmitter. You should also remember
that you can start your vehicle with the correct
ignition key if the alarm has been set off.
110

Four-Wheel Drive
If your vehicle has four-wheel drive, the engine’s
driving power can be sent to all four wheels
for extra traction. To get the most satisfaction out
of four-wheel drive, you must be familiar with
its operation. Read the part that follows before
using four-wheel drive. You should use Two-Wheel
High for most normal driving conditions.
Notice:Driving on clean, dry pavement in
Four-Wheel-Drive High or Four-Wheel-Drive
Low for an extended period of time may cause
premature wear on your vehicle’s powertrain.
Do not drive on clean, dry pavement in
Four-Wheel-Drive High or Four-Wheel-Drive
Low for extended periods of time.
Automatic Transfer Case
If your vehicle has four-wheel drive, the transfer
case knob is located to the right of the steering
wheel on the instrument panel.Use this knob to shift
into and out of
four-wheel drive
2
m(Two-Wheel High):This setting is for
driving in most street and highway situations.
Your front axle is not engaged in two-wheel drive.
It also provides the best fuel economy.
AUTO (Automatic Four-Wheel Drive):This
setting is ideal for use when road conditions are
variable. When driving your vehicle in automatic
four-wheel drive, the front axle is engaged, but the
vehicle’s power is sent to the rear wheels.
When the vehicle senses a loss of traction, the
system will automatically engage four-wheel drive.
Driving in this mode results in slightly lower fuel
economy than Two-Wheel High.
122

4m(Four-Wheel High):This setting should be
used when you need extra traction, such as
on snowy or icy roads or in most off-road
situations. This setting also engages your front
axle to help drive your vehicle.
4
n(Four-Wheel Low):This setting also
engages your front axle and delivers extra torque.
It sends maximum power to all four wheels.
You might choose this setting if you are driving
off-road in deep sand, deep mud, and climbing or
descending steep hills.
{CAUTION:
Shifting the transfer case to NEUTRAL
can cause your vehicle to roll even if the
transmission is in PARK (P). You or
someone else could be seriously injured.
Be sure to set the parking brake before
placing the transfer case in NEUTRAL.
SeeParking Brake on page 126.NEUTRAL:Shift the vehicle’s transfer case to
NEUTRAL only when towing your vehicle.
SeeRecreational Vehicle Towing on page 355for
more information.
An indicator light in the knob will show you which
position the transfer case is in. The indicator
lights will come on briey when you turn on the
ignition and one will stay on. If the lights do
not come on, you should take your vehicle to your
dealer for service. An indicator light will ash
while shifting the transfer case. It will stay on when
the shift is complete. If for some reason the
transfer case cannot make a requested shift, it will
return to the last chosen setting.
If the service Four-Wheel Drive Warning Light on
the instrument panel cluster stays on, you
should take your vehicle to your dealer for service.
SeeService Four-Wheel Drive Warning Light on
page 216for further information.
123

Parking Brake
To set the parking brake, hold the regular brake
pedal down with your foot and pull up on the
parking brake lever located between the seats.
If the ignition is on, the brake system warning light
on the instrument panel cluster will come on.
SeeBrake System Warning Light on page 206.To release the parking brake, hold the regular
brake pedal down. Pull the parking brake lever up
until you can press in the button at the end of
the lever. Hold the button in as you move
the parking brake lever all the way down.
Notice:Driving with the parking brake on can
overheat the brake system and cause
premature wear or damage to brake system
parts. Verify that the parking brake is fully
released and the brake warning light is
off before driving.
If you are towing a trailer and you must park on a
hill, seeTowing a Trailer on page 362.
126