parking brake GMC SAVANA 2012 Owner's Manual

Black plate (23,1)GMC Savana Owner Manual - 2012 - 2nd - 11/11/11
Instruments and Controls 5-23
Brake System Warning
Light
The vehicle brake system consists
of two hydraulic circuits. If one
circuit is not working, the remaining
circuit can still work to stop the
vehicle. For normal braking
performance, both circuits need to
be working.
If the warning light comes on, there
could be a brake problem. Have the
brake system inspected right away.
MetricEnglish
This light should come on briefly
when ignition key is turned to ON/
RUN. If it does not come on, have it
fixed so it will be ready to warn if
there is a problem. When the ignition is on, the brake
system warning light also comes on
when the parking brake is set. See
Parking Brake on page 9‑34
for
more information. The light stays on
if the parking brake does not fully
release. If it stays on after the
parking brake is fully released, it
means the vehicle has a brake
problem.
If the light comes on while driving,
pull off the road and stop carefully.
The pedal might be harder to push,
or the pedal might go closer to the
floor. It could take longer to stop.
If the light is still on, have the
vehicle towed for service. See
Towing the Vehicle on page 10‑89.
{WARNING
The brake system might not be
working properly if the brake
system warning light is on.
Driving with the brake system
warning light on can lead to a
crash. If the light is still on after
the vehicle has been pulled off
the road and carefully stopped,
have the vehicle towed for
service.

Black plate (2,1)GMC Savana Owner Manual - 2012 - 2nd - 11/15/11
7-2 Infotainment System
To minimize taking your eyes off the
road while driving, do the following
while the vehicle is parked:
.Become familiar with the
operation and controls of the
audio system.
.Set up the tone, speaker
adjustments, and preset radio
stations.
For more information, see Defensive
Driving on page 9‑3.
Notice: Contact your dealer
before adding any equipment.
Adding audio or communication
equipment could interfere with
the operation of the engine, radio,
or other systems, and could
damage them. Follow federal
rules covering mobile radio and
telephone equipment. Notice:
The chime signals related
to safety belts, parking brake, and
other functions of the vehicle
operate through the radio/
entertainment system. If that
equipment is replaced or
additional equipment is added to
the vehicle, the chimes may not
work. Make sure that replacement
or additional equipment is
compatible with the vehicle
before installing it. See
Accessories and Modifications on
page 10‑3.
The vehicle has Retained
Accessory Power (RAP). With RAP,
the audio system can be played
even after the ignition is turned off.
See Retained Accessory Power
(RAP) on page 9‑21 for more
information.
Theft-Deterrent Feature
The theft-deterrent feature works by
learning a portion of the Vehicle
Identification Number (VIN) to
the infotainment system. The
infotainment system does not
operate if it is stolen or moved to a
different vehicle.

Black plate (1,1)GMC Savana Owner Manual - 2012 - 2nd - 11/11/11
Driving and Operating 9-1
Driving and
Operating
Driving Information
Distracted Driving . . . . . . . . . . . . . 9-2
Defensive Driving . . . . . . . . . . . . . 9-3
Drunk Driving . . . . . . . . . . . . . . . . . 9-3
Control of a Vehicle . . . . . . . . . . . 9-4
Braking . . . . . . . . . . . . . . . . . . . . . . . 9-4
Steering . . . . . . . . . . . . . . . . . . . . . . . 9-4
Off-Road Recovery . . . . . . . . . . . . 9-5
Loss of Control . . . . . . . . . . . . . . . . 9-5
Driving on Wet Roads . . . . . . . . . 9-6
Highway Hypnosis . . . . . . . . . . . . 9-7
Hill and Mountain Roads . . . . . . 9-7
Winter Driving . . . . . . . . . . . . . . . . . 9-8
If the Vehicle Is Stuck . . . . . . . . 9-10
Vehicle Load Limits . . . . . . . . . . 9-10
Starting and Operating
New Vehicle Break-In . . . . . . . . 9-16
Ignition Positions . . . . . . . . . . . . 9-16
Starting the Engine . . . . . . . . . . 9-18
Fast Idle System . . . . . . . . . . . . . 9-19
Engine Heater . . . . . . . . . . . . . . . 9-20
Retained AccessoryPower (RAP) . . . . . . . . . . . . . . . 9-21
Shifting Into Park . . . . . . . . . . . . 9-21
Shifting out of Park . . . . . . . . . . 9-22
Parking over Things That Burn . . . . . . . . . . . . . . . . . . 9-23
Engine Exhaust
Engine Exhaust . . . . . . . . . . . . . . 9-24
Running the Vehicle WhileParked . . . . . . . . . . . . . . . . . . . . . 9-25
Automatic Transmission
Automatic Transmission(Six Speed) . . . . . . . . . . . . . . . . 9-25
Automatic Transmission (Four Speed) . . . . . . . . . . . . . . . 9-28
Manual Mode . . . . . . . . . . . . . . . . 9-31
Tow/Haul Mode . . . . . . . . . . . . . . 9-32
Drive Systems
All-Wheel Drive . . . . . . . . . . . . . . 9-33
Brakes
Antilock Brake System (ABS) . . . . . . . . . . . . . . 9-33
Parking Brake . . . . . . . . . . . . . . . 9-34
Ride Control Systems
StabiliTrak®System . . . . . . . . . 9-35
Locking Rear Axle . . . . . . . . . . . 9-37
Cruise Control
Cruise Control . . . . . . . . . . . . . . . 9-37
Fuel
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . 9-40
Recommended Fuel . . . . . . . . . 9-40
Gasoline Specifications (U.S. and Canada Only) . . . 9-41
California Fuel Requirements . . . . . . . . . . . . . . 9-41
Fuels in Foreign Countries . . . 9-41
Fuel Additives . . . . . . . . . . . . . . . 9-41
Fuel E85 (85% Ethanol) . . . . . 9-42
Filling the Tank . . . . . . . . . . . . . . 9-43
Filling a Portable Fuel Container . . . . . . . . . . . . . . . . . . . 9-45

Black plate (17,1)GMC Savana Owner Manual - 2012 - 2nd - 11/11/11
Driving and Operating 9-17
A (STOPPING THE ENGINE/
LOCK/OFF):When the vehicle is
stopped, turn the ignition switch to
LOCK/OFF to turn the engine off.
Retained Accessory Power (RAP)
will remain active. See Retained
Accessory Power (RAP) on
page 9‑21.
This position locks the ignition and
transmission.
Do not turn the engine off when the
vehicle is moving. This will cause a
loss of power assist in the brake
and steering systems and disable
the airbags.
If the vehicle must be shut off in an
emergency:
1. Brake using a firm and steady pressure. Do not pump the
brakes repeatedly. This may
deplete power assist, requiring
increased brake pedal force. 2. Shift the vehicle to N (Neutral).
This can be done while the
vehicle is moving. After shifting
to N (Neutral), firmly apply the
brakes and steer the vehicle to a
safe location.
3. Come to a complete stop, shift to P (Park), and turn the ignition
to LOCK/OFF. On vehicles with
an automatic transmission, the
shift lever must be in P (Park) to
turn the ignition switch to the
LOCK/OFF position.
4. Set the parking brake. See Parking Brake on page 9‑34.
{WARNING
Turning off the vehicle while
moving may cause loss of power
assist in the brake and steering
systems and disable the airbags.
While driving, only shut the
vehicle off in an emergency. If the vehicle cannot be pulled over,
and must be shut off while driving,
turn the ignition to ACC/
ACCESSORY.
Notice:
Using a tool to force the
key to turn in the ignition could
cause damage to the switch or
break the key. Use the correct
key, make sure it is all the way in,
and turn it only with your hand.
If the key cannot be turned by
hand, see your dealer.
B (ACC/ACCESSORY): This is the
position in which you can operate
things like the radio and the
windshield wipers when the engine
is off.

Black plate (20,1)GMC Savana Owner Manual - 2012 - 2nd - 11/11/11
9-20 Driving and Operating
When the fast idle is active the
Driver Information Center (DIC) will
display“FAST IDLE ON.”
One of the following actions will turn
off the fast idle:
.Pressing the brake.
.Selecting the Cruise Control
Cancel button.
.Releasing the Parking Brake.
.The transmission shift lever is
moved out of P (Park) or
N (Neutral).
.Selecting the Cruise Control On/
Off button when it was
previously on.
.Pressing the Cruise Control Set
switch a second time.
.Pressing the accelerator greater
than a quarter of the way down.
.Turning the ignition switch to the
LOCK/OFF position.
Engine Heater
If the vehicle has a diesel engine,
see the Duramax diesel supplement
for more information.
The engine coolant heater can
provide easier starting and better
fuel economy during engine
warm‐up in cold weather conditions
at or below −18°C (0°F). Vehicles
with an engine coolant heater
should be plugged in at least four
hours before starting. An internal
thermostat in the plug-end of the
cord may exist which will prevent
engine coolant heater operation at
temperatures above −18°C (0°F).
To Use the Engine Coolant
Heater
1. Turn off the engine.
2. Open the hood and unwrap the
electrical cord. The cord for the engine coolant
heater is located on the driver
side of the engine compartment
and is attached to the hose for
the power steering reservoir.
3. Plug it into a normal, grounded 110-volt AC outlet.
{WARNING
Plugging the cord into an
ungrounded outlet could cause an
electrical shock. Also, the wrong
kind of extension cord could
overheat and cause a fire. You
could be seriously injured. Plug
the cord into a properly grounded
three-prong 110-volt AC outlet.
If the cord will not reach, use a
heavy-duty three-prong extension
cord rated for at least 15 amps.
4. Before starting the engine, be sure to unplug and store the
cord as it was before to keep it
away from moving engine parts
and prevent damage.

Black plate (21,1)GMC Savana Owner Manual - 2012 - 2nd - 11/11/11
Driving and Operating 9-21
The length of time the heater should
remain plugged in depends on
several factors. Ask a dealer in the
area where you will be parking the
vehicle for the best advice on this.
Retained Accessory
Power (RAP)
These vehicle accessories can be
used for up to 10 minutes after the
engine is turned off:
.Audio System
.Power Windows (if equipped)
These features will work when the
ignition key is in ON/RUN or ACC/
ACCESSORY. Once the key is
turned from ON/RUN to LOCK/OFF,
power to the radio and power
windows will continue to work
10 minutes or until the driver door is
opened.
Shifting Into Park
{WARNING
It can be dangerous to get out of
the vehicle if the shift lever is not
fully in P (Park) with the parking
brake firmly set. The vehicle can
roll. If you have left the engine
running, the vehicle can move
suddenly. You or others could be
injured. To be sure the vehicle will
not move, even when you are on
fairly level ground, use the steps
that follow. If you are pulling a
trailer, see Driving Characteristics
and Towing Tips on page 9‑46.
1. Hold the brake pedal down and set the parking brake. See
Parking Brake on page 9‑34. 2. Move the shift lever into P (Park)
by pulling the shift lever toward
you and moving it up as far as it
will go.
3. Turn the ignition key to LOCK/OFF.
4. Remove the key and take it with you. If you can leave the vehicle
with the ignition key in your
hand, the vehicle is in P (Park).

Black plate (22,1)GMC Savana Owner Manual - 2012 - 2nd - 11/11/11
9-22 Driving and Operating
Leaving the Vehicle With the
Engine Running
{WARNING
It can be dangerous to leave the
vehicle with the engine running.
The vehicle could move suddenly
if the shift lever is not fully in
P (Park) with the parking brake
firmly set. And, if you leave the
vehicle with the engine running, it
could overheat and even catch
fire. You or others could be
injured. Do not leave the vehicle
with the engine running.If you have to leave the vehicle with
the engine running, be sure the
vehicle is in P (Park) and the
parking brake is firmly set before
you leave it. After you move the shift
lever into P (Park), hold the regular
brake pedal down. Then, see if you
can move the shift lever away from
P (Park) without first pulling it toward
you. If you can, it means that the
shift lever was not fully locked into
P (Park).
Torque Lock
If you are parking on a hill and you
do not shift the vehicle into P (Park)
properly, the weight of the vehicle
may put too much force on the
parking pawl in the transmission.
You may find it difficult to pull the
shift lever out of P (Park). This is
called torque lock. To prevent torque
lock, set the parking brake and then
shift into P (Park) properly before
you leave the driver seat. To find out
how, see
“Shifting Into Park”
previously in this section. When you are ready to drive, move
the shift lever out of P (Park) before
you release the parking brake.
If torque lock does occur, you may
need to have another vehicle push
yours a little uphill to take some of
the pressure from the parking pawl
in the transmission, so you can pull
the shift lever out of P (Park).
Shifting out of Park
The vehicle has an automatic
transmission shift lock control
system. You have to fully apply the
brakes before you can shift from
P (Park) when the ignition is in ON/
RUN or ACC/ACCESSORY. See
Automatic Transmission (Six Speed)
on page 9‑25
orAutomatic
Transmission (Four Speed) on
page 9‑28.

Black plate (23,1)GMC Savana Owner Manual - 2012 - 2nd - 11/11/11
Driving and Operating 9-23
The shift lock control system is
designed to do the following:
.Prevent the ignition key from
being removed unless the shift
lever is in P (Park).
.Prevent movement of the shift
lever out of P (Park), unless the
ignition is in ON/RUN or ACC/
ACCESSORY and the regular
brake pedal is applied.
The shift lock control system is
always functional except in the case
of a dead battery or low voltage
(less than 9 V) battery.
If the vehicle has an uncharged
battery or a battery with low voltage,
try charging or jump starting the
battery. See Jump Starting on
page 10‑84 for more information. To shift out of P (Park) use the
following:
1. Apply the brake pedal.
2. Turn the ignition to ACC/
ACCESSORY or ON/RUN.
3. Move the shift lever to the desired position.
If you still are unable to shift out of
P (Park):
1. Ease the pressure on the shift lever.
2. While holding down the brake pedal, push the shift lever all the
way into P (Park).
3. Move the shift lever to the desired position.
If you are still having a problem
shifting, have the vehicle serviced.
Parking over Things
That Burn
{WARNING
Things that can burn could touch
hot exhaust parts under the
vehicle and ignite. Do not park
over papers, leaves, dry grass,
or other things that can burn.

Black plate (25,1)GMC Savana Owner Manual - 2012 - 2nd - 11/11/11
Driving and Operating 9-25
Running the Vehicle
While Parked
It is better not to park with the
engine running. But if you ever have
to, here are some things to know.
{WARNING
Idling a vehicle in an enclosed
area with poor ventilation is
dangerous. Engine exhaust may
enter the vehicle. Engine exhaust
contains carbon monoxide (CO)
which cannot be seen or smelled.
It can cause unconsciousness
and even death. Never run the
engine in an enclosed area that
has no fresh air ventilation. For
more information, seeEngine
Exhaust on page 9‑24.
{WARNING
It can be dangerous to get out of
the vehicle if the automatic
transmission shift lever is not fully
in P (Park) with the parking brake
firmly set. The vehicle can roll. Do
not leave the vehicle when the
engine is running unless you
have to. If you have left the
engine running, the vehicle can
move suddenly. You or others
could be injured. To be sure the
vehicle will not move, even when
you are on fairly level ground,
always set the parking brake and
move the shift lever to P (Park).
Follow the proper steps to be sure
the vehicle will not move. See
Shifting Into Park on page 9‑21.
If parking on a hill and pulling a
trailer, see Driving Characteristics
and Towing Tips on page 9‑46.
Automatic
Transmission
Automatic Transmission
(Six Speed)
Vehicles with a six speed automatic
transmission have a shift position
indicator within the instrument panel
cluster.
There are several different positions
for the shift lever.
See “Range Selection Mode” under
Manual Mode on page 9‑31.

Black plate (26,1)GMC Savana Owner Manual - 2012 - 2nd - 11/11/11
9-26 Driving and Operating
P (Park):This position locks the
rear wheels. It is the best position to
use when starting the engine
because the vehicle cannot move
easily. When parked on a hill,
especially when the vehicle has a
heavy load, you might notice an
increase in the effort to shift out of
P (Park). See “Torque Lock” under
Shifting Into Park on page 9‑21 for
more information.
{WARNING
It is dangerous to get out of the
vehicle if the shift lever is not fully
in P (Park) with the parking brake
firmly set. The vehicle can roll.
Do not leave the vehicle when the
engine is running unless you
have to. If you have left the
engine running, the vehicle can
move suddenly. You or others
could be injured. To be sure the
vehicle will not move, even when
you are on fairly level ground,
(Continued)
WARNING (Continued)
always set the parking brake and
move the shift lever to P (Park).
SeeShifting Into Park on
page 9‑21. If you are pulling a
trailer, see Driving Characteristics
and Towing Tips on page 9‑46.
R (Reverse): Use this gear to
back up.
Notice: Shifting to R (Reverse)
while the vehicle is moving
forward could damage the
transmission. The repairs would
not be covered by the vehicle
warranty. Shift to R (Reverse) only
after the vehicle is stopped.
To rock the vehicle back and forth to
get out of snow, ice, or sand without
damaging the transmission, see If
the Vehicle Is Stuck on page 9‑10.
N (Neutral): In this position, the
engine does not connect with the
wheels. To restart when you are already moving, use N (Neutral)
only. Also, use N (Neutral) when the
vehicle is being towed.
{WARNING
Shifting into a drive gear while the
engine is running at high speed is
dangerous. Unless your foot is
firmly on the brake pedal, the
vehicle could move very rapidly.
You could lose control and hit
people or objects. Do not shift
into a drive gear while the engine
is running at high speed.
Notice: Shifting out of P (Park) or
N (Neutral) with the engine
running at high speed may
damage the transmission. The
repairs would not be covered by
the vehicle warranty. Be sure the
engine is not running at high
speed when shifting the vehicle.