ECU GMC SIERRA 2006 Service Manual

Rear Doors
Extended Cab
Your vehicle may be equipped with a rear access
door(s) that allows easier access to the rear area
of the extended cab.
To open a rear access door
from the outside, rst open
the front door. Then, use
the handle located on
the front edge of the rear
access door to open it.
You must fully close a rear access door before you can
close the front door.To open a rear access door
from the inside, the front
door must be opened rst.
Then, use the handle
located on the inside of the
rear access door to open it.
Crew Cabs
If your vehicle is a crew cab, you can open your doors
from the inside or outside. Your vehicle may also have
a feature which prevents children from opening the rear
doors. SeeRear Door Security Locks (Crew Cab) on
page 2-13for more information.
Tailgate
You can open the tailgate by lifting up on its handle
while pulling the tailgate toward you.
To shut the tailgate, rmly push it upward until it
latches.
After you put the tailgate back up, pull it back towards
you to be sure it latches securely.
2-14

Tailgate Removal
The tailgate on your vehicle can be removed to allow for
different loading situations. Although the tailgate can be
removed without assistance, you may want someone to
assist you with the removal to avoid possible damage to
the vehicle.
To remove the tailgate, do the following:
1. Raise the tailgate
slightly and release
both retaining cable
clips. To release the
retaining cable clips,
lift the cable so it points
straight out and push
the cable clip forward.2. With the tailgate at a
slight upward angle,
pull back on the tailgate
at the right edge and
then move the tailgate
to the right to release
the left edge.
Reverse the above procedure to reinstall. Make sure the
tailgate is secure.
2-15

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 be equipped with a content
theft-deterrent alarm system.
The security light is located
on the instrument panel
cluster. SeeSecurity Light
on page 3-49for additional
information.To activate the theft-deterrent system, do the following:
1. Close all the doors.
2. Lock the door with the remote keyless entry
transmitter. The security light should come on
and ash.
If the lock button on the remote keyless entry
transmitter is pressed, but a door is open, you may hear
three chimes indicating delayed locking is enabled. See
Delayed Locking on page 2-10for additional information.
Close the door and the content theft-deterrent system will
be activated.
If a locked door is opened without using the remote
keyless entry transmitter or OnStar, if equipped with
an active subscription, the alarm will go off. Your vehicle’s
lamps will ash and the horn will sound
for about two minutes, then will turn off to save the
battery power. If this occurs, you can turn off the alarm
by pressing unlock on the remote keyless entry
transmitter or by placing the key in the ignition and
turning it to START.
If your vehicle has a Driver Information Center (DIC),
you can customize your alarm warning. SeeDIC Vehicle
Customization on page 3-64for additional information.
2-19

The horn may chirp for 10 seconds before the alarm
goes off if the theft-deterrent system is activated using
the remote keyless entry transmitter and the driver’s door
is opened. If this occurs, you can turn off the alarm by
pressing unlock on the remote keyless entry transmitter
or by placing the key in the ignition and turning it to
START.
Here is how to avoid setting off the alarm by accident:
If you do not want to activate the theft-deterrent
system, the vehicle should be locked with the
door key after the doors are closed.
Always unlock a door with the remote keyless entry
transmitter.
If you set off the alarm by accident, turn off the alarm by
pressing unlock on the remote keyless entry transmitter
or by placing the key in the ignition and turning it to
START.
Testing the Alarm
The alarm can be tested by following these steps:
1. From inside the vehicle, activate the system by
locking the doors with the remote keyless entry
transmitter.
2. Wait for the security light to go out.
3. Unlock the door with the manual door lock and
open the door. This should set off the alarm.
4. Turn off the alarm by pressing unlock on the remote
keyless entry transmitter or by placing the key in
the ignition and turning it to START.
If the alarm does not sound when it should, but the
vehicle’s headlamps ash, check to see if the horn
works. The horn fuse may be blown. To replace the
fuse, seeInstrument Panel Fuse Block on page 5-124
andUnderhood Fuse Block on page 5-127.
If the alarm does not sound or the vehicle’s headlamps
do not ash, see your dealer for service.
2-20

Passlock®
Your vehicle is equipped with the Passlock®
theft-deterrent system.
Passlock
®is a passive theft-deterrent system.
Passlock®enables fuel if the ignition lock cylinder is
turned with a valid key. If a correct key is not used or the
ignition lock cylinder is tampered with, fuel is disabled.
If the engine stalls and the security light ashes, wait until
the light stops ashing before trying to restart the engine.
Remember to release the key from START as soon as
the engine starts.
If the engine is running and the security light comes on,
you will be able to restart the engine if you turn the engine
off. However, your Passlock
®system is not working
properly and must be serviced by your dealer. Your
vehicle is not protected by Passlock
®at this time. You
may also want to check the fuse. SeeFuses and Circuit
Breakers on page 5-123. See your dealer for service.
In an emergency, call the GM Roadside Assistance
Center. SeeRoadside Assistance Program on page 7-6.
Starting and Operating Your
Vehicle
New Vehicle Break-In
Notice:Your vehicle does not need an elaborate
break-in. But it will perform better in the long run if
you follow these guidelines:
Keep your speed at 55 mph (88 km/h) or less for
the rst 500 miles (805 km).
Do not drive at any one constant speed, fast or
slow, for the rst 500 miles (805 km). Do not
make full-throttle starts. Avoid downshifting to
brake, or slow, the vehicle.
Avoid making hard stops for the rst 200 miles
(322 km) or so. During this time your new brake
linings are not yet broken in. Hard stops with
new linings can mean premature wear and earlier
replacement. Follow this breaking-in guideline
every time you get new brake linings.
Do not tow a trailer during break-in. See
Towing a Trailer on page 4-67for the trailer
towing capabilities of your vehicle and more
information.
Following break-in, engine speed and load can be
gradually increased.
2-21

OnStar®System
OnStar®uses global positioning system (GPS) satellite
technology, wireless communications, and live advisors
to provide you with a wide range of safety, security,
information, and convenience services. If your airbags
deploy, the system is designed to make an automatic call
to OnStar
®Emergency where we can request emergency
services be sent to your location. If you lock your keys in
the car, call OnStar
®at 1-888-4-ONSTAR and they can
send a signal to unlock your doors. If you need roadside
assistance, press the OnStar
®button and they will get
you the help you need.
A complete OnStar
®User’s Guide and the Terms
and Conditions of the OnStar®Subscription Service
Agreement are included in the vehicle’s glove box
literature. For more information, visit www.onstar.com or
www.onstar.ca. Contact OnStar
®at 1-888-4-ONSTAR
(1-888-466-7827), or press the OnStar®button to speak
to an OnStar®advisor 24 hours a day, 7 days a week.Terms and conditions of the Subscription Service
Agreement can be found at www.onstar.com or
www.onstar.ca.
OnStar®Services
For new vehicles equipped with OnStar®, the Safe and
Sound Plan is included for one year from the date of
purchase. You can extend this plan beyond the rst year,
or upgrade to the Directions and Connections
®Plan to
meet your needs. For more information, press the
OnStar
®button to speak to an advisor.
Safe and Sound Plan

Automatic Notication of Airbag Deployment
Emergency Services
Roadside Assistance
Stolen Vehicle Tracking
AccidentAssist
Remote Door Unlock/Vehicle Alert
Remote Diagnostics
Online Concierge
2-73

Universal Home
Remote System
The Universal Home Remote System, a combined
universal transmitter and receiver, provides a way to
replace up to three hand-held transmitters used to
activate devices such as gate operators, garage door
openers, entry door locks, security systems, and
home lighting.If your vehicle is equipped with the Universal Home
Remote Transmitter, it 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 received, including
interference that may cause undesired operation of the
device.
Changes and modications to this system by other than
an authorized service facility could void authorization to
use this equipment.
2-75

Universal Home Remote
System Operation
Do not use the Universal Home Remote with any garage
door opener that does not have the “stop and reverse”
feature. This includes any garage door opener model
manufactured before April 1, 1982. If you have a newer
garage door opener with rolling codes, please be sure to
follow Steps 6 through 8 to complete the programming of
your Universal Home Remote Transmitter.
Read the instructions completely before attempting to
program the Universal Home Remote. Because of
the steps involved, it may be helpful to have another
person available to assist you in the programming steps.
Keep the original hand-held transmitter for use in other
vehicles as well as for future Universal Home Remote
programming. It is also recommended that upon the sale
of the vehicle, the programmed Universal Home Remote
buttons should be erased for security purposes. See
“Erasing Universal Home Remote Buttons” later in this
section or, for assistance, seeCustomer Assistance
Offices on page 7-4.
Be sure that people and objects are clear of the garage
door or gate operator you are programming. When
programming a garage door, it is advised to park outside
of the garage.
It is recommended that a new battery be installed
in your hand-held transmitter for quicker and more
accurate transmission of the radio-frequency signal.
Programming Universal Home Remote
Follow these steps to program up to three channels:
1. Press and hold down the two outside Universal
Home Remote buttons, releasing only when the
Universal Home Remote indicator light begins to
ash, after 20 seconds. Do not hold down the
buttons for longer than 30 seconds and do not repeat
this step to program a second and/or third hand-held
transmitter to the remaining two Universal Home
Remote buttons.
2. Position the end of your hand-held transmitter
about 1 to 3 inches (3 to 8 cm) away from the
Universal Home Remote buttons while keeping
the indicator light in view.
3. Simultaneously press and hold both the desired
Universal Home Remote button and the hand-held
transmitter button. Do not release the buttons
until Step 4 has been completed.
Some entry gates and garage door openers
may require you to substitute Step 3 with the
procedure noted in “Gate Operator and Canadian
Programming” later in this section.
4. The indicator light will ash slowly at rst and then
rapidly after Universal Home Remote successfully
receives the frequency signal from the hand-held
transmitter. Release both buttons.
2-76

Reprogramming a Single Universal
Home Remote Button
To program a device to Universal Home Remote using
a Universal Home Remote button previously trained,
follow these steps:
1. Press and hold the desired Universal Home
Remote button. Do not release the button.
2. The indicator light will begin to ash after
20 seconds. While still holding the Universal
Home Remote button, proceed with Step 2 under
“Programming Universal Home Remote” shown
earlier in this section.
For additional information on Universal Home Remote,
seeCustomer Assistance Offices on page 7-4.
Storage Areas
Glove Box
Open the glove box by pulling the bottom of the handle
upward.
Cupholder(s)
Your vehicle may have cupholders located in the front
console, or in the fold-down armrest.
Coinholder(s)
Your vehicle may have a coin holder inside the center
console storage area.
Front Storage Area
Your vehicle may have a center armrest storage
compartment in the front bench seat.
To open it, fold down the armrest and press the latch
handle located at the front of the armrest. Then, let the
lid pop up and swing open.
The storage compartment may have a cassette/compact
disc holder.
Center Console Storage Area
Your vehicle may be equipped with a console
compartment between the bucket seats.
To open it, press the button located on the right side of
the front of the lid and swing the lid open.
Your vehicle may have a compact disc holder in the
console.
Your console may have a cupholder that swings down
for the rear seat passengers to use. The front cupholder
pulls out and swivels 180° to provide clearance between
tall beverage containers and the manual transmission
shift lever (if equipped).
2-79

Instrument Panel Overview...............................3-4
Hazard Warning Flashers................................3-6
Other Warning Devices...................................3-6
Horn.............................................................3-6
Tilt Wheel.....................................................3-6
Turn Signal/Multifunction Lever.........................3-7
Turn and Lane-Change Signals........................3-7
Headlamp High/Low-Beam Changer..................3-8
Flash-to-Pass.................................................3-9
Windshield Wipers..........................................3-9
Windshield Washer.......................................3-10
Cruise Control..............................................3-10
Headlamps..................................................3-14
Headlamps on Reminder................................3-14
Daytime Running Lamps (DRL).......................3-15
Automatic Headlamp System..........................3-15
Fog Lamps..................................................3-17
Auxiliary Roof Mounted Lamp.........................3-18
Instrument Panel Brightness...........................3-18
Dome Lamps...............................................3-18
Dome Lamp Override....................................3-19
Entry Lighting...............................................3-19
Exit Lighting.................................................3-19
Front Reading Lamps....................................3-19
Cargo Lamp.................................................3-19
Accessory Power Outlet(s).............................3-20
Ashtray(s) and Cigarette Lighter......................3-20Climate Controls............................................3-21
Climate Control System.................................3-21
Dual Climate Control System..........................3-22
Dual Automatic Climate Control System...........3-25
Outlet Adjustment.........................................3-30
Warning Lights, Gages, and Indicators............3-31
Instrument Panel Cluster................................3-32
Speedometer and Odometer...........................3-33
Trip Odometer..............................................3-33
Tachometer.................................................3-34
Safety Belt Reminder Light.............................3-34
Airbag Readiness Light..................................3-35
Airbag Off Light............................................3-35
Passenger Airbag Status Indicator...................3-37
Battery Warning Light....................................3-40
Voltmeter Gage............................................3-40
Up-Shift Light (Manual Transmission)...............3-41
Brake System Warning Light..........................3-41
Anti-Lock Brake System Warning Light...............3-42
Traction Off Light..........................................3-43
Engine Coolant Temperature Gage..................3-43
Transmission Temperature Gage.....................3-44
Malfunction Indicator Lamp.............................3-46
Oil Pressure Gage........................................3-48
Security Light...............................................3-49
Cruise Control Light......................................3-49
Section 3 Instrument Panel
3-1