ECO mode GMC SIERRA 2002 Owner's Manual

1-46
When choosing a child restraint, be sure the child
restraint is designed to be used in a vehicle. If it is,
it will have a label saying that it meets federal motor
vehicle safety standards.
Then follow the instructions for the restraint. You may
find these instructions on the restraint itself or in a
booklet, or both. These restraints use the belt system in
your vehicle, but the child also has to be secured within
the restraint to help reduce the chance of personal injury.
When securing an add
-on child restraint, refer to the
instructions that come with the restraint which may be
on the restraint itself or in a booklet, or both, and to this
manual. The child restraint instructions are important, so
if they are not available, obtain a replacement copy from
the manufacturer.
Where to Put the Restraint
Accident statistics show that children are safer if they
are restrained in the rear rather than the front seat.
General Motors, therefore, recommends that child
restraints be secured in the rear seat, including an infant
riding in a rear
-facing infant seat, a child riding in a
forward
-facing child seat and an older child riding in a
booster seat. There is limited space in the rear seating
area of an extended cab model. If you want to secure a
child restraint in a rear seating position of an extended
cab model, especially in the rear center position, be sure
to study the instructions that came with your child
restraint to see if there is enough room to secure your
seat properly.
If a forward
-facing child seat must be secured in the
vehicle's right front seat, the seat should be moved back
as far as possible. However, it is better to secure the
restraint in a rear seat.
If you want to secure a rear
-facing child restraint in the
right front passenger's seat, turn off the passenger's air
bag. See ªAir Bag Off Switchº and ªSecuring a Child
Restraint in the Right Front Seat Positionº in the Index
for more on this, including important safety information.

2-22
FIRST (1): This position gives you even more power
(but lower fuel economy) than SECOND (2). You can
use it on very steep hills, or in deep snow or mud.
If the shift lever is put in FIRST (1) while the vehicle is
moving forward, the transmission won't shift into first
gear until the vehicle is going slowly enough.
NOTICE:
If your rear wheels can't turn, don't try to drive.
This might happen if you were stuck in very deep
sand or mud or were up against a solid object.
You could damage your transmission.
Also, if you stop when going uphill, don't hold
your vehicle there with only the accelerator pedal.
This could overheat and damage the transmission.
Use your brakes or shift into PARK (P) to hold
your vehicle in position on a hill.
On cold days, approximately 32
F (0
C) or colder,
your transmission is designed to shift differently until
the engine reaches normal operating temperature.
This is intended to improve heater performance.
Tow/Haul Mode Switch
Your vehicle is equipped with a tow/haul mode.
The switch is located on the end of the column shift
lever. You can use this feature to assist when towing or
hauling a heavy load. See ªTow/Haul Modeº in the
Index for more information.

2-29
Locking Rear Axle
If your vehicle has this feature, your locking rear axle
can give you additional traction on snow, mud, ice, sand
or gravel. It works like a standard axle most of the time,
but when one of the rear wheels has no traction and
the other does, this feature will allow the wheel with
traction to move the vehicle.
All-Wheel Drive
With this feature, engine power is sent to all four wheels
when extra traction is needed.
This is like four
-wheel drive, but there is no separate
lever or switch to engage or disengage the front axle.
It is fully automatic, and adjusts itself as needed for
road conditions.
QUADRASTEER (4WS)
The QUADRASTEER System has a control and
diagnostic module that monitors and records current
system status and operational information.
If your vehicle is equipped with the 4WS system it has
the ability to steer the vehicle with all four wheels.
Once this mode is selected, it is recommended to leave
the vehicle in this mode at all times.
The 4WS system is equipped with three different
driving modes:

Two wheel steering (2WS)

Four wheel steering (4WS)

Four wheel steering with a trailer mode (4WS TOW)

2-31
Higher Speed Mode (40 mph/64 kph and above)
At higher speeds the steering will operate in the higher
speed mode. This means the front and rear wheels will
turn in the same direction. This improves stability of the
vehicle during lane changes and sweeping turns.4WS TOW: The 4WS TOW mode provides enhanced
stability allowing the trailer to follow the path of the tow
vehicle more closely, especially during lane changes.
In this mode the system operates much like the
4WS mode, but is enhanced for trailer towing.
It is recommended for all types and weights of trailers.
To engage the 4WS TOW mode, press the 4 Wheel Steer
button until the 4WS and TOW indicators light up on
the instrument panel. If the TOW indicator is flashing
you will have to center the steering wheel by turning it
to the left or right. While in the 4WS TOW mode, it is
possible the steering wheel may be slightly off center.

2-39
The exterior lamp control has three positions:
(OFF): Turning the control to this position turns off
all lamps, except the Daytime Running Lamps (DRL).
It also puts the system into automatic headlamp mode.
(Parking Lamps): Turning the control to this
position turns on the parking lamps, together with
the following:

Sidemarker Lamps

Taillamps

License Plate Lamps

Instrument Panel Lights

Roof Marker Lamps (If Equipped)
(Headlamps): Turning the control to this position
turns on the headlamps, together with the previously
listed lamps and lights.
You can switch your headlamps from high to low
-beam
by pulling on the turn signal/multifunction lever.
Automatic Headlamp System
When it is dark enough outside, your automatic
headlamp system will turn on your headlamps at the
normal brightness along with other lamps such as the
taillamps, sidemarker, parking lamps and the instrument
panel lights. The radio lights will also be dim.
Your vehicle is equipped with a headlamp off delay,
which will keep the headlamps on for a short time after
the ignition is turned to OFF. For more information see
ªSecondary Information Centerº in the Index.
Your vehicle has a light sensor located on the top of
the instrument panel in the defroster grille. Be sure it
is not covered, or the system will be on whenever the
ignition is on.
The system may also turn on your headlamps when
driving through a parking garage, heavy overcast
weather or a tunnel. This is normal.

2-41
When it begins to get dark, the automatic headlamp
system will switch from DRL to the headlamps or the
last chosen headlamp setting that was used.
When you turn the exterior lamp control to off,
the headlamps will go off, and your DRL lamps will
illuminate, provided it is not dark outside.
To idle your vehicle with the DRL off, set the
parking brake, before starting the vehicle. Shifting the
transmission into PARK (P) will also allow you to idle
the vehicle with the DRL off. The DRL will stay off
until you release the parking brake or shift the
transmission out of PARK (P).
The following procedure applies only to vehicles first
sold in the United States.
When necessary, you may turn off the automatic
headlamp system and the Daytime Running Lamps
(DRL) feature by following these steps. When the system
is turned off, the headlamps will not automatically come
on when it becomes dark outside.1. Turn the ignition to RUN.
2. Press the DOME OVERRIDE button four times
within six seconds. After the fourth press of the
button, a chime will sound informing you the
system is off.
The system will revert back to the automatic mode when
the DOME OVERRIDE button is again pushed four
times within six seconds (a chime will sound), or when
the ignition is turned off and on again.
As with any vehicle, you should turn on the regular
headlamp system when you need it.
Puddle Lamps
Your vehicle is equipped with puddle lamps to help you
see the area near the base of the front doors when it is
dark out. The puddle lamps will illuminate when a door
is opened or when you press the UNLOCK button on the
keyless entry transmitter. You can program the puddle
lamps not to come on if you wish. See ªSecondary
Information Centerº in the Index for more information.

2-46
Electrochromic Mirror Operation
The electrochromic (self
-dimming) mirror function is
turned on automatically each time the engine is started.
To operate the electrochromic mirror do the following:
1. Make sure the green indicator light, located to the
left of the on/off button, is lit. If it's not, press and
hold the on/off button for six seconds until the
green light comes on, indicating that the mirror
is in electrochromic (self dimming) mode.
2. Turn off the electrochromic mirror function by
pressing and holding the on/off button for six
seconds until the green indicator light turns off.
Compass Variance
The mirror is set in zone eight upon leaving the factory.
It will be necessary to adjust the compass to compensate
for compass variance if you live outside of zone eight.
Under certain circumstances, as during a long distance
cross
-country trip, it will be necessary to adjust for
compass variance. Compass variance is the difference
between earth's magnetic north and true geographic
north. If not adjusted to account for compass variance,
your compass could give false readings.To adjust for compass variance do the following:
1. Find your current location and variance zone number
on the following zone map.
2. Press and hold the on/off button for nine seconds or
until a Z and a zone number appears in the display.
The compass is now in zone mode.

2-57
HomeLink
Transmitter
This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions:
(1) this device may not cause harmful interference,
and (2) this device must accept any interference received
including interference that may cause undesired operation.
This device complies with RSS
-210 of Industry Canada.
Operation is subject to the following two conditions:
(1) this device may not cause interference, and (2) this
device must accept any interference, including interference
that may cause undesired operation of the device.
Changes and modifications to this system by other than
an authorized service facility could void authorization to
use this equipment.
Programming the HomeLink Transmitter
Do not use the HomeLink Transmitter with any garage
door opener that does not have the ªstop and reverseº
feature. This includes any garage door opener model
manufactured before April 1, 1982.
Be sure that people and objects are clear of the garage
door you are programming.
It is recommended that a new battery be installed in
your hand
-held transmitter for quicker and more
accurate transmission of the radio frequency.
Your vehicle's engine should be turned off while
programming the transmitter. Follow these steps to
program up to three channels:
1. Decide which one of the three channels (one of the
HomeLink buttons) you want to program.
2. Press and hold the desired button on HomeLink
through Step 3.
3. When the HomeLink indicator light begins to blink
slowly (this may take up to 30 seconds), hold the
hand
-held transmitter about 1 to 3 inches (3 to 8 cm)
away from HomeLink and then press and hold the
transmit button on the hand
-held transmitter.
Continue to hold both buttons until the indicator
light on HomeLink begins to flash rapidly
(this may take up to 90 seconds).

2-58
If you have trouble programming HomeLink,
make sure that you have followed the directions exactly
as described and that the battery in the hand
-held
transmitter is not weak. If you still cannot program it,
move the hand
-held transmitter to the left or right or
forward or backward or flip it upside down. HomeLink
may not work with older garage door openers that do
not meet current Federal Consumer Safety Standards.
If you cannot program the transmitter after repeated
attempts, refer to ªTraining a Garage Door Opener with
a 'Rolling Code' Featureº next in this section or contact
the manufacturer of HomeLink at 1
-800-355-3515,
or on the internet at www.homelink.com.
Be sure to keep the original hand
-held transmitter in
case you need to erase and reprogram HomeLink.
Training a Garage Door Opener with a
ªRolling Codeº Feature (If Equipped)
If you have not previously programmed the hand-held
transmitter to HomeLink, see ªProgramming the
HomeLink Transmitterº listed previously. If you have
completed this programming already, you now need to
train the garage door opener motor head unit to
recognize HomeLink.
1. Find the ªLearnº or ªSmartº button on the garage
door opener motor head unit. The exact location and
color will vary by garage door opener brand. If you
have difficulty finding the Learn or Smart button,
refer to your garage door opener owner's manual
or contact the manufacturer of HomeLink at
1
-800-355-3515, or on the internet at
www.homelink.com. Because of the steps involved,
it may be helpful to have another person assist in
programming the transmitter.
2. Press the Learn or Smart button on the garage
door opener motor head unit. An indicator light will
begin to flash when the motor head unit enters the
training mode.
Following this step, you have 30 seconds to start Step 3.

2-78 Trans Fluid Hot
The automatic transmission temperature warning display
is contained in the message center.
If the transmission fluid
temperature becomes high,
the message center will
display this message.
When the transmission enters the protection mode
you may notice a change in the transmission shifting
patterns. When the transmission fluid temperature
returns to normal, the display will turn off and the
transmission shifting patterns will return to normal.
NOTICE:
If you keep driving your vehicle with the
transmission TRANS FLUID HOT message
displayed, you can damage the transmission.
This could lead to costly repairs that may not be
covered under your warranty.
The following situations can cause the transmission to
operate at higher temperatures:

Towing a trailer

Hot outside air temperatures

Hauling a large or heavy load

Low transmission fluid level

High transmission fluid level

Restricted air flow to the radiator and the auxiliary
transmission oil cooler.
A temporary solution to hotter transmission operating
temperatures may be to let the transmission cool down.
If the transmission is operated at higher temperatures on
a frequent basis, see ªScheduled Maintenanceº in the
Index for the proper transmission maintenance intervals.