ECU GMC ENVOY 2002 Owner's Guide

2-60
Cargo Security Shade (If Equipped)
If your vehicle has a cargo cover, you can use it to cover
items in the cargo area of your vehicle.
To install the cargo cover, do the following:
1. Align the endcap with the pocket in the trim panel
located behind the rear seat.
2. Compress the opposite endcap, align it with the
pocket located on the opposite side of the trim panel
and release.
3. Grasp the handle and unroll the cover. Latch the
posts into the sockets on the inside of the vehicle to
secure it.
To remove the cargo cover, do the following:
1. Release the cover from the latch posts and carefully
roll it back up.
2. Compress one endcap and remove it from the pocket
in the trim panel.
3. Remove the cargo cover from the other endcap so
that you can remove the shade from the vehicle.CAUTION:
An improperly stored cargo cover could be
thrown about the vehicle during a collision or
sudden maneuver. You or others could be
injured. If you remove the cover, always store it
outside of the vehicle. When you put it back,
always be sure that it is securely reattached.
Cargo Tie Downs
There are five cargo tie
downs in the rear of your
vehicle that allow you to
strap cargo in and keep it
from moving.

2-61
Rear Floor Stowage Lid
CAUTION:
If the rear floor stowage lid isn't secured
properly, it can move around in a collision or
sudden stop. People in the vehicle could be
injured. Be sure to secure the rear floor stowage
lid properly.
Your vehicle has a rear floor stowage lid located in
the rear cargo area that allows you to put items
underneath it.
To remove the rear floor stowage lid, do the following:
1. Press the latch release and lift up the latch handle.
2. Raise the lid slightly to unhook it.
3. Pull the lid rearward to release it from the forward
mounting tabs.
To reinstall the rear floor stowage lid, reverse the
previous steps. Make sure the lid is secure by applying
slight pressure to the latch until you hear it click.
Luggage Carrier
CAUTION:
If you try to carry something on top of your
vehicle that is longer or wider than the luggage
carrier
-- like paneling, plywood, a mattress, and
so forth
-- the wind can catch it as you drive
along. This can cause you to lose control. What
you are carrying could be violently torn off, and
this could cause you or other drivers to have a
collision, and of course damage your vehicle. You
may be able to carry something like this inside.
But, never carry something longer or wider than
the luggage carrier on top of your vehicle.
A luggage carrier allows you to load things on top of
your vehicle. The luggage carrier has slats and side rails
attached to the roof, sliding crossrails and places to use
for tying things down. These let you load some other
things on top of your vehicle, as long as they are not
wider or longer than the luggage carrier.

2-62
To slide the crossrails to where you want them, pull up
on the lever on each side of the crossrail. This will
release the crossrail and allow you to slide it. When the
crossrail is where you want it, push down on the lever
to lock it into place.
NOTICE:
Loading cargo that weighs more than 220 lbs.
(100 kg) on the luggage carrier may damage
your vehicle.
When you carry cargo on the luggage carrier of
a proper size and weight, put it on the slats, and
distribute the weight evenly. Then slide the
crossrail up against the rear of the load, to help
keep it from moving. You can then tie it down.
Cargo containers must be loaded on the
crossrails only.
Don't exceed the maximum vehicle capacity when loading
your vehicle. For more information on vehicle capacity
and loading, see ªLoading Your Vehicleº in the Index.To prevent damage or loss of cargo as you're driving,
check now and then to make sure the luggage carrier is
locked and cargo is still securely fastened.
When the luggage carrier is not in use, place the cross
rails at the following positions for wind noise reduction.
Place one cross rail at the rear most point of the vehicle
and the other above the opening of the rear door.
Ashtrays and Cigarette Lighter
The front ashtray is removable and fits into the
front cupholder.
NOTICE:
Don't put papers and other things that burn into
your ashtray. If you do, cigarettes or other smoking
materials could set them on fire, causing damage.
To remove the front ashtray, pull the covered bin out of
the cupholder.
To use the lighter, press it in all the way, and let go.
When it's ready, it will pop back out by itself.

2-67
The light will be red in the event of an OnStar system
malfunction. If this occurs press the OnStar Services
button to attempt to contact an advisor. If the connection
is made, the advisor will assist you with steps to take to
make sure that the system is functioning properly. If you
cannot contact the advisor, take your vehicle to your
dealership as soon as possible for assistance.
Cellular Antenna
The cellular antenna on the outside of your vehicle is
critical to effective communications using the OnStar
system. Optimum cellular reception can be obtained
when the mast is straight up and down.
OnStar Services
The following services are available within OnStar
service plans. Your vehicle comes with a specific
one
-year service plan that allows use of some or all of
the following services.
Automatic Notification of Air Bag Deployment: If an
air bag deploys, a priority emergency signal is
automatically sent to the center. An advisor will locate
your vehicle's position, try to contact you and assist you
in the situation. If the center is unable to contact you, an
emergency service provider will be contacted.Stolen Vehicle Tracking: Call the center at
1
-888-4-ONSTAR (1-888-466-7827) to report your
vehicle stolen. The system can then attempt to locate
and track your vehicle and the advisor will assist the
proper authorities.
Roadside Assistance with Location: For vehicle
breakdowns, press the OnStar Services button. An
advisor will contact the appropriate help.
Remote Diagnostics: If an instrument panel light comes
on, press the OnStar Services button. An advisor can
perform a check of the engine on
-board computer, and
recommend what action needs to be taken.
OnStar MED
-NET: Med-Net can store your personal
medical history and provide it to emergency personnel if
necessary. (Requires activation and additional fee.)
Remote Door Unlock: To contact the center, call
1
-888-4-ONSTAR. You will be required to provide your
security information. An advisor will send a command
to your vehicle to unlock itself. The advisor can delay
unlocking your vehicle. Remote Door Unlock is
disabled 48 hours after the vehicle is parked to maintain
the battery charge.
Vehicle Locator Service: To contact the center, call
1
-888-4-ONSTAR. You will be required to provide your
security information. An advisor will send a command
to your vehicle to sound the horn and/or flash the lamps.

2-87
Change Engine Oil Light
United States Canada
This light is displayed when the engine oil needs to
be changed.
Once the engine oil has been changed, the CHANGE
ENG OIL light must be reset. Until it is reset, the light
will be displayed when the engine is on. For more
information on resetting the system, see ªOil Life
Systemº in the Index.
Security Light
United States Canada
This light will come on briefly when you turn the
key toward START. The light will stay on until the
engine starts.
If the light flashes, the Passlock

system has entered a
tamper mode. If the vehicle fails to start, see ªPasslockº
in the Index.
If the light comes on continuously while driving and
stays on, there may be a problem with the Passlock
system. Your vehicle will not be protected by Passlock,
and you should see your dealer.
Also, see ªContent Theft
-Deterrentº in the Index for
additional information regarding the SECURITY light.

4-16
Off-Road Driving with Your
Four
-Wheel-Drive Vehicle
This off-road guide is for vehicles that have
four
-wheel drive.
Also, see ªAnti
-Lock Brakesº in the Index.
If your vehicle doesn't have four
-wheel drive, you
shouldn't drive off
-road unless you're on a level,
solid surface.
Off
-road driving can be great fun. But it does have
some definite hazards. The greatest of these is the
terrain itself.
ªOff
-roadingº means you've left the great North
American road system behind. Traffic lanes aren't
marked. Curves aren't banked. There are no road signs.
Surfaces can be slippery, rough, uphill or downhill.
In short, you've gone right back to nature.
Off
-road driving involves some new skills. And that's
why it's very important that you read this guide. You'll
find many driving tips and suggestions. These will help
make your off
-road driving safer and more enjoyable.
Before You Go Off-Roading
There are some things to do before you go out.
For example, be sure to have all necessary maintenance
and service work done. Check to make sure all
underbody shields (if so equipped) are properly
attached. Be sure you read all the information about
your four
-wheel-drive vehicle in this manual. Is there
enough fuel? Is the spare tire fully inflated? Are the
fluid levels up where they should be? What are the local
laws that apply to off
-roading where you'll be driving?
If you don't know, you should check with law
enforcement people in the area. Will you be on
someone's private land? If so, be sure to get the
necessary permission.
Loading Your Vehicle for Off-Road Driving
There are some important things to remember about
how to load your vehicle.

The heaviest things should be on the load floor and
forward of your rear axle. Put heavier items as far
forward as you can.

Be sure the load is secured properly, so driving on
the off
-road terrain doesn't toss things around.

4-17
CAUTION:

Cargo on the load floor piled higher than
the seatbacks can be thrown forward
during a sudden stop. You or your
passengers could be injured. Keep cargo
below the top of the seatbacks.

Unsecured cargo on the load floor can
be tossed about when driving over rough
terrain. You or your passengers can be
struck by flying objects. Secure the
cargo properly.

Heavy loads on the roof raise the vehicle's
center of gravity, making it more likely to
roll over. You can be seriously or fatally
injured if the vehicle rolls over. Put heavy
loads inside the cargo area, not on the roof.
Keep cargo in the cargo area as far forward
and low as possible.
You'll find other important information in this manual.
See ªVehicle Loading,º ªLuggage Carrierº and ªTiresº
in the Index.
Environmental Concerns
Off-road driving can provide wholesome and satisfying
recreation. However, it also raises environmental
concerns. GMC recognizes these concerns and urges
every off
-roader to follow these basic rules for
protecting the environment:

Always use established trails, roads and areas that
have been specially set aside for public off
-road
recreational driving; obey all posted regulations.

Avoid any driving practice that could damage the
environment
-- shrubs, flowers, trees, grasses -- or
disturb wildlife (this includes wheel
-spinning,
breaking down trees or unnecessary driving through
streams or over soft ground).

Always carry a litter bag . . . make sure all refuse is
removed from any campsite before leaving.

Take extreme care with open fires (where permitted),
camp stoves and lanterns.

Never park your vehicle over dry grass or other
combustible materials that could catch fire from the
heat of the vehicle's exhaust system.

4-40
Winter DrivingHere are some tips for winter driving:

Have your vehicle in good shape for winter.

You may want to put winter emergency supplies in
your vehicle.
Include an ice scraper, a small brush or broom, a supply
of windshield washer fluid, a rag, some winter outer
clothing, a small shovel, a flashlight, a red cloth and
reflective warning triangles. And, if you will be driving
under severe conditions, include a small bag of sand, a
piece of old carpet or a couple of burlap bags to help
provide traction. Be sure you properly secure these
items in your vehicle.
Driving on Snow or Ice
Most of the time, those places where your tires meet the
road probably have good traction.
However, if there is snow or ice between your tires and
the road, you can have a very slippery situation. You'll
have a lot less traction or ªgripº and will need to be
very careful.

4-45 Dinghy Towing
When towing your vehicle, turn the ignition off.
To prevent your battery from draining while towing,
remove the Ignition A and the Ignition B fuses from the
engine compartment fuse block. Be sure to reinstall the
fuse when you reach your destination. See ªFuses and
Circuit Breakersº in the Index.
Tw o
-Wheel-Drive Vehicles
Tw o
-wheel-drive vehicles, should not be towed with
all four wheels on the ground. Two
-wheel-drive
transmissions have no provisions for internal lubrication
while being towed. To properly tow these vehicles,
they should be placed on a platform trailer with all
four wheels off the ground.
In rare cases when it's unavoidable that a
two
-wheel-drive vehicle is to be towed with all
four wheels on the ground, the propeller shaft to
axle yoke orientation should be marked and the
propeller shaft removed following the applicable
service manual removal/installation procedure.
Dust or dirt can enter the back of the transmission
through the opening created by removing the propeller
shaft if proper protection is not provided. Also, check
the transmission fluid level before driving the truck.Four
-Wheel-Drive Vehicles
Use the following procedure to tow your vehicle:
1. Firmly set the parking brake.
2. Shift the transmission to PARK (P).
3. Securely attach the vehicle being towed to the
tow vehicle.

4-48
Using heavier suspension components to get added
durability might not change your weight ratings. Ask
your dealer to help you load your vehicle the right way.
NOTICE:
Your warranty does not cover parts or
components that fail because of overloading.
If you put things inside your vehicle -- like suitcases,
tools, packages, or anything else
-- they will go as fast
as the vehicle goes. If you have to stop or turn quickly,
or if there is a crash, they'll keep going.
CAUTION:
Things you put inside your vehicle can strike
and injure people in a sudden stop or turn, or
in a crash.

Put things in the cargo area of your vehicle.
Try to spread the weight evenly.

Never stack heavier things, like suitcases,
inside the vehicle so that some of them are
above the tops of the seats.

Don't leave an unsecured child restraint in
your vehicle.

When you carry something inside the
vehicle, secure it whenever you can.

Don't leave a seat folded down unless you
need to.
There's also important loading information for off-road
driving in this manual. See ªLoading Your Vehicle for
Off
-Road Drivingº in the Index.