2012 CHEVROLET AVALANCHE engine

Black plate (3,1)Chevrolet Avalanche Owner Manual - 2012
Keys, Doors, and Windows 2-3
.Check the transmitter's battery.
See“Battery Replacement” later
in this section.
.If the transmitter is still not
working correctly, see your
dealer or a qualified technician
for service.
Remote Keyless Entry
(RKE) System Operation
The Remote Keyless Entry (RKE)
transmitter functions work up to
60 m (195 ft) away from the vehicle.
There are other conditions which
can affect the performance of the
transmitter. See Remote Keyless
Entry (RKE) System on page 2‑2.
With Remote Start (Without
Remote Start Similar)
/(Remote Vehicle Start): For
vehicles with this feature, press
/
to start the engine from outside the
vehicle using the RKE transmitter.
See Remote Vehicle Start on
page 2‑5 for additional information.
Q(Lock):Press to lock all the
doors, including the tailgate.
If enabled through the Driver
Information Center (DIC), the turn
signal lamps flash once to indicate
locking has occurred. If enabled
through the DIC, the horn chirps
when
Qis pressed again within
three seconds of the previous press
of the lock button. See Vehicle
Personalization (With DIC Buttons)
on page 5‑45 for additional
information.
Pressing
Qarms the content
theft‐deterrent system. See
Anti-theft Alarm System on
page 2‑17.

Black plate (5,1)Chevrolet Avalanche Owner Manual - 2012
Keys, Doors, and Windows 2-5
To replace the battery:
1. Separate the transmitter with aflat, thin object, such as a flat
head screwdriver.
.Carefully insert the tool
into the notch located
along the parting line of the
transmitter. Do not insert
the tool too far. Stop as
soon as resistance is felt.
.Twist the tool until the
transmitter is separated.
2. Remove the old battery. Do not use a metal object. 3. Insert the new battery, positive
side facing down. Replace with a
CR2032 or equivalent battery.
4. Snap the transmitter back together.
Remote Vehicle Start
If available, this feature allows you
to start the engine from outside of
the vehicle. It may also start up the
vehicle's heating or air conditioning
systems and rear window defogger.
Normal operation of the system will
return after the key is turned to the
ON/RUN position.
If the vehicle has an automatic
climate control system, the climate
control system will default to a
heating or cooling mode depending
on the outside temperatures. If the
vehicle does not have an automatic
climate control system, the system
will turn on at the setting the vehicle
was set to when the vehicle was
last turned off. During a remote start, if the vehicle
has an automatic climate control
system and heated seats, the
heated seats will turn on during
colder outside temperatures and will
shut off when the key is turned to
ON/RUN. If the vehicle does not
have an automatic climate control
system, during remote start,
manually turn the heated seats on
and off. See
Heated and Ventilated
Front Seats on page 3‑9 for
additional information.
Laws in some communities may
restrict the use of remote starters.
For example, some laws may
require a person using the remote
start to have the vehicle in view
when doing so. Check local
regulations for any requirements
on remote starting of vehicles.
Do not use the remote start feature
if the vehicle is low on fuel. The
vehicle may run out of fuel.

Black plate (6,1)Chevrolet Avalanche Owner Manual - 2012
2-6 Keys, Doors, and Windows
If the vehicle has the remote start
feature, the RKE transmitter
functions will have an increased
range of operation. However, the
range may be less while the vehicle
is running.
There are other conditions which
can affect the performance of the
transmitter. SeeRemote Keyless
Entry (RKE) System on page 2‑2 for
additional information.
/(Remote Start): This button will
be on the RKE transmitter if the
vehicle has remote start.
To start the vehicle using the remote
start feature:
1. Aim the RKE transmitter at the
vehicle.
2. Press and release
Q.
3. Immediately press and hold
/
until the turn signal lamps flash.
If you cannot see the vehicle's
lamps, press and hold
/for
two to four seconds. When the vehicle starts, the
parking lamps will turn on and
remain on while the vehicle is
running. The doors will be
locked and the climate control
system may come on.
The engine will continue to run
for 10 minutes. Repeat the steps
for a 10-minute time extension.
Remote start can be extended
only once.
After entering the vehicle during a
remote start, insert and turn the key
to ON/RUN to drive the vehicle.
To cancel a remote start:
.Aim the RKE transmitter at the
vehicle and press and hold
/
until the parking lamps turn off.
.Turn on the hazard warning
flashers.
.Turn the ignition on and then
back off. The vehicle can be remote started
two separate times between driving
sequences. The engine will run for
10 minutes after each remote start.
Or, you can extend the engine run
time by another 10 minutes within
the first 10 minute remote start time
frame, and before the engine stops.
For example, if
Qand then/are
pressed again after the vehicle
has been running for 5 minutes,
10 minutes are added, allowing the
engine to run for 15 minutes.
The additional 10 minutes are
considered a second remote vehicle
start.
Once two remote starts, or a single
remote start with one time extension
has been done, the vehicle must be
started with the key. After the key is
removed from the ignition, the
vehicle can be remote started again.

Black plate (7,1)Chevrolet Avalanche Owner Manual - 2012
Keys, Doors, and Windows 2-7
The vehicle cannot be remote
started if the key is in the ignition,
the hood is not closed, or if there
is an emission control system
malfunction and the check engine
light is on.
Also, the engine will turn off during a
remote vehicle start if the coolant
temperature gets too high or if the
oil pressure gets low.
Remote Start Ready
If the vehicle does not have the
remote vehicle start feature, it may
have the remote start ready feature.
This feature allows your dealer to
add the manufacturer's remote
vehicle start feature.
See your dealer to add the
manufacturer's remote vehicle
start feature to the vehicle.
Door Locks
{WARNING
Unlocked doors can be
dangerous.
.Passengers, especially
children, can easily open the
doors and fall out of a moving
vehicle. When a door is
locked, the handle will not
open it. The chance of being
thrown out of the vehicle in a
crash is increased if the
doors are not locked. So, all
passengers should wear
safety belts properly and the
doors should be locked
whenever the vehicle is
driven.
.Young children who get into
unlocked vehicles may be
unable to get out. A child can
be overcome by extreme heat
and can suffer permanent(Continued)
WARNING (Continued)
injuries or even death from
heat stroke. Always lock the
vehicle whenever leaving it.
.Outsiders can easily enter
through an unlocked door
when you slow down or stop
the vehicle. Locking the doors
can help prevent this from
happening.
There are several ways to lock and
unlock the vehicle.
From outside, use the Remote
Keyless Entry (RKE) transmitter or
the key in the driver door.
From inside, use the power door
locks or manual door locks. To lock
or unlock the door with the manual
locks, push down or pull up on the
manual lock knob.

Black plate (9,1)Chevrolet Avalanche Owner Manual - 2012
Keys, Doors, and Windows 2-9
Open the rear doors to access the
security locks on the inside edge of
each door.
To set the locks, insert a key into
the slot and turn it to the horizontal
position. The door can only be
opened from the outside with the
door unlocked. To return the door to
normal operation, turn the slot to the
vertical position.
Doors
Midgate®
{WARNING
It can be dangerous to drive with
the cargo area covered and the
tailgate and the Midgate
®open
because carbon monoxide (CO)
gas can come into your vehicle.
You can not see or smell CO.
It can cause unconsciousness
and even death. If you must drive
with the cargo covers on and the
tailgate and Midgate open or if
electrical wiring or other cable
connections must pass through
the seal between the body and
the Midgate:
.Make sure all windows
are shut.
.Turn the fan on your heating
or cooling system to its
highest speed on the setting
(Continued)
WARNING (Continued)
that brings in outside air. This
will force outside air into your
vehicle. SeeDual Automatic
Climate Control System on
page 8‑4.
.If you have air outlets on or
under the instrument panel,
open them all the way. See
Engine Exhaust on
page 9‑31.
Midgate Operation
This vehicle is equipped with a
Midgate and a removable rear glass
panel. The Midgate allows you to
extend the length of the vehicle's
cargo area.

Black plate (18,1)Chevrolet Avalanche Owner Manual - 2012
2-18 Keys, Doors, and Windows
If you set off the alarm by accident,
press unlock on the RKE transmitter
or place the key in the ignition and
turn it to START to turn off the
alarm. The alarm will not stop if you
try to unlock a door any other way.
Testing the Alarm
To test the alarm:
1. From inside the vehicle, lowerthe driver window and open the
driver door.
2. Activate the system by locking the doors with the power door
lock switch while the door is
open, or with the RKE
transmitter.
3. Get out of the vehicle, close the door and wait for the security
light to go out.
4. Then reach in through the window, unlock the door with the
manual door lock and open the
door. This should set off the
alarm. While the alarm is set, the power
door unlock switch will not work.
If the alarm does not sound when it
should but the headlamps flash,
check to see if the horn works. The
horn fuse may be blown. To replace
the fuse, see
Instrument Panel Fuse
Block on page 10‑46 andEngine
Compartment Fuse Block on
page 10‑41.
If the alarm does not sound or the
headlamps do not flash, the vehicle
should be serviced by your dealer.
Immobilizer
See Radio Frequency Statement on
page 13‑20 for information
regarding Part 15 of the Federal
Communications Commission
(FCC) rules and Industry Canada
Standards RSS-GEN/210/220/310.
Immobilizer Operation
This vehicle has PASS-Key®III+
(Personalized Automotive Security
System) theft-deterrent system.
PASS-Key III+ is a passive
theft-deterrent system.
The system is automatically armed
when the key is removed from the
ignition.
The system is automatically
disarmed when the key is turned to
ON/RUN, ACC/ACCESSORY,
or START from the LOCK/OFF
position.
You do not have to manually arm or
disarm the system.
The security light will come on if
there is a problem with arming or
disarming the theft-deterrent
system.

Black plate (19,1)Chevrolet Avalanche Owner Manual - 2012
Keys, Doors, and Windows 2-19
When the PASS-Key III+ system
senses that someone is using the
wrong key, it prevents the vehicle
from starting. Anyone using a
trial-and-error method to start the
vehicle will be discouraged because
of the high number of electrical key
codes.
If the engine does not start and the
security light on the instrument
panel cluster comes on when trying
to start the vehicle, there may be a
problem with the theft-deterrent
system. Turn the ignition off and try
again.
If the engine still does not start, and
the key appears to be undamaged,
try another ignition key. At this time,
you may also want to check the
fuse. SeeFuses and Circuit
Breakers on page 10‑41. If the
engine still does not start with the
other key, the vehicle needs service.
If the vehicle does start, the first key
may be faulty. See your dealer who
can service the PASS-Key III+ to
have a new key made. It is possible for the PASS-Key III+
decoder to learn the transponder
value of a new or replacement key.
Up to 10 keys may be programmed
for the vehicle. The following
procedure is for programming
additional keys only. If all the
currently programmed keys are lost
or do not operate, you must see
your dealer or a locksmith who can
service PASS-Key III+ to have keys
made and programmed to the
system.
See your dealer or a locksmith who
can service PASS-Key III+ to get a
new key blank cut exactly as the
ignition key that operates the
system.
To program the new additional key:
1. Verify that the new key has
a
1stamped on it.
2. Insert the original, already programmed key in the ignition
and start the engine. If the
engine will not start, see your
dealer for service. 3. After the engine has started,
turn the key to LOCK/OFF, and
remove the key.
4. Insert the new key to be programmed and turn it to the
ON/RUN position within
five seconds of turning the
ignition to the LOCK/OFF
position in Step 3.
The security light will turn off
once the key has been
programmed.
5. Repeat Steps 1 through 4 if additional keys are to be
programmed.
If you lose or damage your
PASS-Key III+ key, see your dealer
or a locksmith who can service
PASS-Key III+ to have a new
key made.
Do not leave the key or device
that disarms or deactivates the
theft-deterrent system in the vehicle.

Black plate (28,1)Chevrolet Avalanche Owner Manual - 2012
3-28 Seats and Restraints
What Will You See after
an Airbag Inflates?
After the frontal airbags and
seat-mounted side impact airbags
inflate, they quickly deflate, so
quickly that some people may not
even realize an airbag inflated.
Roof-rail airbags may still be at least
partially inflated for some time after
they deploy. Some components of
the airbag module may be hot for
several minutes. For location of the
airbag modules, seeWhat Makes
an Airbag Inflate? on page 3‑27.
The parts of the airbag that come
into contact with you may be warm,
but not too hot to touch. There may
be some smoke and dust coming
from the vents in the deflated
airbags. Airbag inflation does not
prevent the driver from seeing out of
the windshield or being able to steer
the vehicle, nor does it prevent
people from leaving the vehicle.
{WARNING
When an airbag inflates, there
may be dust in the air. This dust
could cause breathing problems
for people with a history of
asthma or other breathing trouble.
To avoid this, everyone in the
vehicle should get out as soon as
it is safe to do so. If you have
breathing problems but cannot
get out of the vehicle after an
airbag inflates, then get fresh air
by opening a window or a door.
If you experience breathing
problems following an airbag
deployment, you should seek
medical attention.
The vehicle may have a feature that
may automatically unlock the doors,
turn on the interior lamps and
hazard warning flashers, and shut
off the fuel system after the airbags
inflate. You can lock the doors, turn off the interior lamps and hazard
warning flashers by using the
controls for those features.
{WARNING
A crash severe enough to inflate
the airbags may have also
damaged important functions in
the vehicle, such as the fuel
system, brake and steering
systems, etc. Even if the vehicle
appears to be drivable after a
moderate crash, there may be
concealed damage that could
make it difficult to safely operate
the vehicle.
Use caution if you should attempt
to restart the engine after a crash
has occurred.
In many crashes severe enough to
inflate the airbag, windshields are
broken by vehicle deformation.
Additional windshield breakage
may also occur from the right front
passenger airbag.