2002 CHEVROLET AVALANCHE ECU

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When placing the
bows, locate the small
notches in the side
rails. These notches
receive the tang on the
bow ends and help the
bows seat into place.

When reinstalling the tonneau cover, start at the front
(near the cab). Place the plastic lip into the front rail
then the rear rail and finish with the side rails.
To clean the tonneau cover, use mild soap and water.
If necessary, use a soft bristle brush to remove dirt
trapped in the grain of the material.Cargo Cover Panels (If Equipped)
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 in its proper
position in the cargo panel storage bag with the
bag securely attached to the cargo tie downs.
When you put it back, always be sure that it is
securely reattached.
NOTICE:
Each cargo cover is designed to support 250 lbs.
(113 kg) each on top of them. Exceeding the weight
limit can damage the cargo covers. This damage
would not be covered by your vehicle's warranty.
Your vehicle may be equipped with a three-piece cargo
cover system. The cargo panels can be removed and
stored in the cargo area of the vehicle with the cargo
panel storage bag.

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Cargo Panel Storage System
The three cargo panels can be stored on either the
driver's or passenger's side of the cargo box using the
storage bag. To store the panels, do the following:1. Secure the storage
bag in the cargo
storage area by
attaching the
four clips on the
cargo bag to the
tie
-down locations
on either side of
the storage area.
It is very important that you use the storage bag to
restrain the cargo panels during driving.
Before storing the cargo panels, be sure that the
latches are in the closed (locked) position. The latches
are in the closed (locked) position when they are
parallel to the front and back edge of the panel.

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6. Snug both straps on the bag by pulling on the free
end of the straps.7. Close both top and bottom mechanisms at the center
of the bag (bag should now be tightly secured).

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Cargo Area Floor Drains
Your vehicle also has four cargo-area floor drains
located under the cargo mat near the sides of the cargo
area. These drains should be cleaned periodically to
allow water to exit the cargo area.
The cargo mat has cutouts for the drains. You can flush
the drains through the cutouts, but if the cargo area is
extremely dirty you can lift up the edges of the cargo
floor mat (or take the whole mat out) and flush the
drains with water.
Cargo Tie Downs
There are eight cargo tie downs in the rear cargo area.
You can use these to strap cargo in.
The tie downs are also used to secure the cargo cover
panel storage bag or the tonneau cover storage bag
if your vehicle is equipped with either. For more
information see ªCargo Cover Panelsº and ªTonneau
Coverº in the Index.

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Luggage Carrier
You can load things on top of your vehicle with this feature.
The luggage carrier has slats and siderails attached to the
roof and crossrails which can be moved back and forth
to help secure cargo. Tie the load to the siderails or
siderail supports.
NOTICE:
Loading cargo that weighs more than 200 lbs.
(90.6 kg) on the luggage carrier may damage
your vehicle. When you carry large things, never
let them hang over the rear or the sides of your
vehicle. Load your cargo so that it rests on the
slats and does not scratch or damage the vehicle.
Put the cargo against the siderails and fasten it
securely to the luggage carrier.
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 leaving,
check now and then to make sure the luggage and cargo
are still securely fastened.Be sure the cargo is properly loaded.

If small heavy objects are placed on the roof cut a
piece of 3/8 inch plywood to fit inside the crossrails
and siderails to spread the load. If plywood is used,
tie it to the siderail supports.

Tie the load to the crossrails or the siderail supports.
Use the crossrails only to keep the load from sliding.
To move the crossrails, pull out on the latch release
handle at each end. Slide the crossrail to the desired
position balancing the force side to side. Push the
release handle back into the latched position and
slide the crossrail back and forth slightly to be sure
the latch snaps securely into place.

If you need to carry long items, move the
crossrails as far apart as they will go. Tie the load
to the crossrails and the siderails or siderail supports.
Also tie the load to the bumpers. Do not tie the load
so tightly that the crossrails or siderails are damaged.

After moving a crossrail, be sure it is securely locked
into the siderail.
Your vehicle has a Center High
-Mounted Stoplamp
(CHMSL) located above the rear glass.
If items are loaded on the roof of the vehicle, care should
be taken not to block or damage the CHMSL unit.

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The light will be red in the event of an OnStar system
malfunction. If this occurs press the OnStar 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.
Safety and Security Services
Automatic Notification of Air Bag Deployment: If an
air bag deploys, a priority emergency signal is sent
automatically 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 locate and
track your vehicle and the advisor will be able to notify
the proper authorities.
Roadside Assistance with Location: For vehicle
breakdowns, press the OnStar button. An advisor will
contact the appropriate help.Remote Diagnostics: If an instrument panel light
comes on, the center can perform a check of the engine
on
-board computer. An advisor can then 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 an additional fee.)
Accident Assist: An advisor can provide step
-by-step
guidance following an accident.
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.
In order to provide you with excellent service, calls with
the OnStar Center may be monitored or recorded.

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Premium Services (Includes Safety and
Security Services)
Route Support: An advisor can provide directions
or guidance to anywhere you want to go. In addition,
they can help you locate gas stations, rest areas, ATMs,
hospitals, stores, eateries and more.
Concierge Services: The concierge advisor can obtain
tickets, reservations or help with vacation/trip planning
and other unique items and services.
Ride Assist: An advisor can locate transportation in the
event that you are unable to drive.
OnStar System Limitations
Complete limitations can be found on the subscriber
services agreement.
OnStar Service is:

available in the 48 contiguous United States, Alaska,
Hawaii and Canada;

available when the vehicle is within the operating
range of a cellular provider;
subject to limitations caused by atmospheric
conditions, such as severe weather or topographical
conditions, such as mountainous terrain.

subject to cellular carrier equipment limitations.
Global positioning capabilities used to deliver
OnStar service will not be available if satellite
signals are obstructed.
OnStar will not function if the vehicle's battery
is discharged or disconnected. It may also be
inoperative if the vehicle is in an accident and the
OnStar or vehicle electrical system components
are damaged.
Safety and security services are provided by existing
governmental emergency service providers. OnStar
will use reasonable efforts to contact the appropriate
emergency service provider and request assistance but
cannot promise that they will respond to the call in a
timely manner or at all.

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Change Engine Oil
This message is displayed
when the engine oil needs to
be changed. The message
is only displayed for
15 seconds at the start of
each ignition cycle.
When you change the engine oil, be sure to reset the
Engine Oil Life Monitor. See ªEngine Oil, When to
Changeº in the Index.
Security
This message is
displayed when the
content theft
-deterrent
system has been activated
and also monitors the
Passlock

System.
If the security message is displayed 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 GM dealer.
Service 4WD (If Equipped)
If the SERVICE 4WD
message comes on,
there may be a problem
with the automatic
transfer case and service
is required.
Malfunctions can be indicated by the system before
any problem is apparent, which may prevent serious
damage to the vehicle. This system is also designed
to assist your service technician in correctly diagnosing
a malfunction.