2002 GMC ENVOY battery replacement

2-11
Changes or modifications to this system by other than an
authorized service facility could void authorization to
use this equipment.
At times you may notice a decrease in range. This is
normal for any remote keyless entry system. If the
transmitter does not work or if you have to stand closer
to your vehicle for the transmitter to work, try this:

Check the distance. You may be too far from your
vehicle. You may need to stand closer during rainy
or snowy weather.

Check the location. Other vehicles or objects may be
blocking the signal. Take a few steps to the left or
right, hold the transmitter higher, and try again.

Check to determine if battery replacement or
resynchronization is necessary. See the instructions
that follow.

If you're still having trouble, see your dealer or a
qualified technician for service.Operation
(Unlock): When you
press unlock, the driver's
door will unlock
automatically, the parking
lamps may flash and the
interior lights will go on.
You can program different feedback settings through the
Driver Information Center (DIC). For more information
see ªDriver Information Center (DIC)º in the Index.
(Lock): Press lock to lock all the doors. Press lock
again within three seconds and the horn will chirp.
(Panic): When the button with the horn symbol
on the key transmitter is pressed, the horn will sound
and the headlamps and taillamps will flash for up to
30 seconds. This can be turned off by pressing the horn
button again, or by waiting for 30 seconds, or by starting
the vehicle.

2-12
Matching Transmitter(s) to Your Vehicle
Each remote keyless entry transmitter is coded to
prevent another transmitter from unlocking your vehicle.
If a transmitter is lost or stolen, a replacement can be
purchased through your dealer. Remember to bring any
remaining transmitters with you when you go to your
dealer. When the dealer matches the replacement
transmitter to your vehicle, any remaining transmitters
must also be matched. Once your dealer has coded the
new transmitter, the lost transmitter will not unlock
your vehicle. Each vehicle can have a maximum of
four transmitters matched to it.
Battery Replacement
Under normal use, the battery in your remote keyless
entry transmitter should last about two years.
You can tell the battery is weak if the transmitter won't
work at the normal range in any location. If you have to
get close to your vehicle before the transmitter works,
it's probably time to change the battery.
The Driver Information Center (DIC) will display a
RFA # BATTERY LOW message when the transmitter
battery is low.
NOTICE:
When replacing the battery, use care not to touch
any of the circuitry. Static from your body
transferred to these surfaces may damage
the transmitter.

3-46 Headphones
The entertainment system includes two
IR wireless headphones.
Mini
-headphone jacks are also provided for use
with customer provided headphones.
The wireless headphones have an ON/OFF switch
and a volume control. To use the headphones turn the
switch to ON. An indicator light will illuminate. If the
light does not illuminate, the batteries may need to be
replaced. See ªBattery Replacementº later in this
section for more information. Switch the headphones
to OFF when not in use.
If the system is shut off, or if the headphones are out
of range of the IR transmitters below the overhead
RSE control panel for more than three minutes,
the headphones will shut off automatically to save the
battery. If you move too far forward or step out of the
vehicle, the headphones will lose the audio signal.
To adjust the volume on both pairs of wired headphones,
use the volume control.
NOTICE:
Do not store the headphones in heat or direct
sunlight. This could damage the headphones
and would not be covered by your warranty.
Keep the headphones stored in a cool, dry place.
Battery Replacement
To change the batteries, do the following:
1. Loosen the screw on the battery compartment
door located on the left side of the headphones.
2. Remove the batteries from the compartment.
3. Replace the two AAA batteries. Make sure that
they are installed correctly.
If the headphones are to be stored for a long period
of time, remove the batteries and keep them in a cool,
dry place.

3-53
COMP/AUDIO (COMP) Compression: Press and
release this button to display the current compression
displayed on the screen. Press this button again to
select the next compression state. Three compression
states are available including minimum, standard and
off. The compression feature only functions on AC3
(Dolby Digital) encoded DVD video discs.
Press and hold this button to see if the DVD playing
has optional audio tracks, such as different languages
or commentaries. Press and release to change selections.
INPUT/TITLE DVD AUX (Auxiliary): Press and
release this button to switch between the auxiliary input
device and the DVD player.
Press and hold this button to see a display of the DVD's
titles. Press and release to change the titles available.
RTN (Return): When a DVD menu is active and
the return button is pressed, the selected option will be
disabled. This button could have different functions with
different discs.
SCREEN BRIGHTNESS: Press the plus or
minus symbol to increase or decrease the brightness
of the screen. This button can also be found above the
video screen.
LIGHT: Press this button to illuminate the keypad
for about eight seconds.Setup Menu
To access the setup menu, ensure a DVD disc is in the
player and the video is in stop mode. Press the menu key.
Once the menu is activated, use the UP, DOWN, RIGHT,
LEFT, and Enter buttons to navigate the screen.
The setup menu allows the user to select default preferences
for Menu Language, Subtitle Language, Audio Language,
TV Aspect, TV Mode, and Dynamic Range Compression.
Not all DVDs support all the feature defaults in the
setup menus. In the event a particular feature is not
supported, defaults will be provided by the DVD media.
Exit the setup menu by pressing the RETURN button
on the remote control. If you make changes to the
system setup defaults, the disc will resume play from
it's beginning and not where it previously left off.
Battery Replacement
To change the batteries, do the following:
1. Unclip the battery door located on the back of
the remote control.
2. Remove the batteries from the compartment.
3. Replace the two AA batteries. Make sure that
they are installed correctly.
If the remote control is to be stored for a long period
of time, remove the batteries and keep them in a cool,
dry place.

6-
6-1
Section 6 Service and Appearance Care
Here you will find information about the care of your vehicle. This section begins with service and fuel information,
and then it shows how to check important fluid and lubricant levels. There is also technical information about your
vehicle, and a part devoted to its appearance care.
6
-2 Service
6
-3 Fuel
6
-5 Fuels in Foreign Countries
6
-6 Filling Your Tank
6
-8 Filling a Portable Fuel Container
6
-8 Checking Things Under the Hood
6
-11 Engine Oil
6
-15 Engine Air Cleaner/Filter
6
-17 Automatic Transmission Fluid
6
-20 Rear Axle
6
-21 Four-Wheel Drive
6
-23 Engine Coolant
6
-26 Radiator Pressure Cap
6
-27 Power Steering Fluid
6
-28 Windshield Washer Fluid
6
-29 Brakes6
-33 Battery
6
-33 Bulb Replacement
6
-36 Windshield Wiper Blade Replacement
6
-38 Tires
6
-46 Appearance Care
6
-47 Cleaning the Inside of Your Vehicle
6
-49 Care of Safety Belts
6
-50 Cleaning the Outside of Your Vehicle
6
-54 GM Vehicle Care/Appearance Materials
6
-55 Vehicle Identification Number (VIN)
6
-55 Service Parts Identification Label
6
-56 Electrical System
6
-63 Replacement Bulbs
6
-63 Capacities and Specifications
6
-64 Normal Maintenance Replacement Parts

6-33
Battery
Your new vehicle comes with a maintenance free
ACDelco
battery. When it's time for a new battery, get
one that has the replacement number shown on the
original battery's label. We recommend an ACDelco
battery. See ªEngine Compartment Overviewº in the
Index for battery location.
WARNING: Battery posts, terminals and related
accessories contain lead and lead compounds, chemicals
known to the State of California to cause cancer and
reproductive harm. Wash hands after handling.
Vehicle Storage
If you're not going to drive your vehicle for 25 days or
more, remove the black, negative (
-) cable from the
battery. This will help keep your battery from
running down.
CAUTION:
Batteries have acid that can burn you and gas
that can explode. You can be badly hurt if you
aren't careful. See ªJump Startingº in the Index
for tips on working around a battery without
getting hurt.
Contact your dealer to learn how to prepare your vehicle
for longer storage periods.
Also, for your audio system, see ªTheft
-Deterrent
Featureº in the Index.
Bulb Replacement
For the type of bulbs, see ªReplacement Bulbsº in
the Index.
For any bulb changing procedure not listed in this
section, contact your dealer.

8-6
Roadside Assistance
GMC's Roadside Assistance provides stranded owners
with over
-the-phone roadside repairs, location of the
nearest GMC dealer or the following special services:
Flat Tire Change: Installation of spare tire will be
covered at no charge (customer is responsible for repair
or replacement of tire).Fuel Delivery: Delivery of enough fuel for the customer
to get to the nearest service station (up to $5.00) will
be covered.
Jump Start: No
-start situations which require a battery
jump start will be covered at no charge.
Lock Out: Replacement keys or locksmith service will
be covered at no charge if you are unable to gain entry
into your vehicle. Delivery of the replacement key will
be covered at no charge within 10 miles (16 km).
Emergency Towing Service: Towing to the nearest
GMC dealer for warranty related disablements will
be covered.
Trip Routing: Custom
-made, computerized highlighted
maps using the most direct or scenic route are provided
free of charge. Maps include points of interest and a list
of GMC dealers along the route. Also included is a list
of hotels along the route that are discounted through
affiliation with ªQuest International.º Trip Routing
is available through Roadside Assistance by calling
1
-800-GMC-8782 (462-8782). Please be prepared
to provide your Vehicle Identification Number (VIN).
Allow five working days for fulfillment.