2006 GMC SIERRA display

Mirrors...........................................................2-59
Manual Rearview Mirror.................................2-59
Automatic Dimming Rearview Mirror with
OnStar
®and Compass...............................2-59
Automatic Dimming Rearview
Mirror with OnStar
®, Compass
and Temperature Display............................2-61
Automatic Dimming Rearview Mirror with
Compass.................................................2-63
Automatic Dimming Rearview
Mirror with Compass and Temperature
Display....................................................2-65
Outside Manual Mirrors..................................2-68
Outside Camper-Type Mirrors.........................2-68
Outside West Coast-Type Mirrors....................2-70
Outside Power Mirrors...................................2-70
Outside Power Foldaway Mirrors.....................2-71
Outside Automatic Dimming Mirror..................2-71Outside Curb View Assist Mirrors....................2-72
Outside Convex Mirror...................................2-72
Outside Heated Mirrors..................................2-72
OnStar
®System.............................................2-73
Universal Home Remote System......................2-75
Universal Home RemoteSystem Operation........2-76
Storage Areas................................................2-79
Glove Box...................................................2-79
Cupholder(s)................................................2-79
Coinholder(s)................................................2-79
Front Storage Area.......................................2-79
Center Console Storage Area.........................2-79
Tonneau Cover............................................2-80
Sunroof.........................................................2-82
Vehicle Personalization...................................2-82
Memory Seat...............................................2-83
Section 2 Features and Controls
2-2

Automatic Transmission Operation
If your vehicle is has an automatic transmission, it
features an electronic shift position indicator within the
instrument panel cluster. This display must be powered
anytime the shift lever is moved out of PARK (P).
SeeFuses and Circuit Breakers on page 5-123.
There are several different positions for your shift lever.
See “Range Selection Mode” later in this section.PARK (P):This position locks your rear wheels. It is the
best position to use when you start your engine because
your vehicle cannot move easily. If your vehicle has the
Allison Transmission®, with the Power Takeoff (PTO),
use PARK (P) when starting. The Allison Transmission®
has a park pawl that is designed to hold the weight of
commercial medium duty trucks. Therefore, the Allison
Transmission
®uses larger parts than other automatic
transmissions. These larger parts may sometimes make
a clunk noise when the selector lever is moved from
DRIVE (D) or REVERSE (R) to PARK (P). This is normal
and there is no damage occurring during these shifts.
When parked on a hill, especially when loaded, you may
notice an increase in the effort to shift out of Park. See
Torque Lock (Automatic Transmission) underShifting
Into Park (P) (Automatic Transmission) on page 2-53for
more information.
Automatic Transmission
Allison Transmission®
2-26

{CAUTION:
It is dangerous to get out of your vehicle if
the shift lever is not fully in PARK (P) with the
parking brake rmly set. Your vehicle can roll.
Do not leave your 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 your
vehicle will not move, even when you are on
fairly level ground, always set your parking
brake and move the shift lever to PARK (P). See
Shifting Into Park (P) (Automatic Transmission)
on page 2-53. If you are pulling a trailer, see
Towing a Trailer on page 4-67.
{CAUTION:
If you have four-wheel drive, your vehicle will
be free to roll — even if your shift lever is in
PARK (P) — if your transfer case is in
NEUTRAL. So, be sure the transfer case is
in a drive gear, two-wheel high (2H) or
four-wheel high (4H) or four-wheel
low (4L) — not in NEUTRAL. SeeShifting
Into Park (P) (Automatic Transmission) on
page 2-53.
REVERSE (R):Use this gear to back up. If your vehicle
has the Allison Transmission
®, the R on the shift display,
may blink if the shift inhibitor is active.
Notice:Shifting to REVERSE (R) while your vehicle
is moving forward could damage the transmission.
The repairs would not be covered by your warranty.
Shift to REVERSE (R) only after your vehicle is
stopped.
To rock your vehicle back and forth to get out of snow,
ice, or sand without damaging your transmission, seeIf
Your Vehicle is Stuck in Sand, Mud, Ice or Snow on
page 4-46.
2-27

Range Selection Mode
(Allison Transmission®)
If your truck has an Allison Transmission®your vehicle
is equipped with a Range Selection System.
To use this feature, do the following:
1. Move the shift lever to the MANUAL MODE (M).
When in the MANUAL MODE, the transmission’s
current gear range will be the highest attainable
range with all the lower gears available.
2. Press the plus/minus buttons to upshift or downshift
selecting the desired range of gears for your current
driving conditions.The Range Selection Mode allows you to control the
vehicle’s engine and vehicle speed while driving
down hill by allowing you to select a desired gear.
The DIC shows the six available ranges with the
highest attainable range shown in brackets. See
Driver Information Center (DIC) on page 3-52and
DIC Operation and Displays on page 3-53for more
information.
While using the Range Selection mode feature, cruise
control and the Tow/Haul mode can be used.
Low Traction Mode
(Allison Transmission®)
If your vehicle has the DURAMAX®diesel engine and the
Allison Transmission®, it is equipped with a Low Traction
Mode that assists in vehicle acceleration when road
conditions are slippery, such as ice or snow. While at a
stop, selecting the second gear range using the Range
Selection system, will allow the Allison Transmission
®
to limit torque to the wheels after it detects wheel slip,
preventing the tires from spinning.
Notice:Spinning the tires or holding the vehicle in
one place on a hill using only the accelerator pedal
may damage the transmission. If you are stuck, do
not spin the tires. When stopping on a hill, use the
brakes to hold the vehicle in place.
2-30

Cold Weather Operation
(Allison Transmission®)
On cold days, approximately 32°F (0°C) or colder, your
automatic transmission is designed to shift differently.
The transmission uses a warm-up mode shift schedule
until the engine reaches normal operating temperature.
While the transmission is in warm-up mode it is normal for
transmission upshifts to be delayed or held longer. This
feature improves heater performance by giving quicker
vehicle warm-ups.
When temperatures are below−13°F (−25°C), the
transmission will prevent certain operations to protect
against damage. When active the DIC will display
the message “Trans in Warm-up”.
SeeDIC Warnings and Messages on page 3-55for
more information.
Tow/Haul Mode
If your vehicle has an automatic transmission, it may
have a Tow/Haul mode. If your vehicle has an
Allison Transmission
®see “Tow/Haul Mode (Allison
Transmission®) following. Tow/Haul mode adjusts
the transmission shift pattern to reduce shift cycling,
providing increased performance, vehicle control, and
transmission cooling when towing or hauling heavy loads.
The selector button is located on the end of the shift
lever. Turn the Turn Tow/Haul on and off by pressing
the button. When the Tow/Haul is on, a light on the
instrument panel cluster will come on.
2-31

Compass Operation
Press the on/off button once to turn the compass on
or off.
There is a compass display in the window in the upper
right corner of the mirror face. The compass displays
a maximum of two characters. For example, “NE”
is displayed for north-east.
Compass Calibration
Press and hold the on/off button down for nine seconds
to activate the compass calibration mode. CAL will
be displayed in the compass window on the mirror.
The compass can be calibrated by driving the vehicle in
circles at 5 mph (8 km/h) or less until the display reads a
direction.
Compass Variance
Compass variance is the difference between earth’s
magnetic north and true geographic north. The mirror
is set to zone eight upon leaving the factory. It will be
necessary to adjust the compass to compensate for
compass variance if you live outside zone eight. Under
certain circumstances, such as during a long distance
cross-country trip, it will be necessary to adjust for
compass variance. 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 map.
2. Press and hold the on/off button for six seconds.
Release the button when ZONE is displayed.
The number shown is the current zone number.
3. Scroll through the zone numbers that appear in the
compass/temperature window on the mirror by
pressing the on/off button. Once you nd your zone
number, release the button. After about four
seconds, the mirror will return to the compass
display, and the new zone number will be set.
2-60

Automatic Dimming Rearview
Mirror with OnStar
®, Compass
and Temperature Display
Your vehicle may have this feature. When on, an
automatic dimming mirror automatically dims to the
proper level to minimize glare from lights behind you
after dark.
The mirror also includes a dual display in the upper right
corner of the mirror face. The compass reading and the
outside temperature will both appear in the display at the
same time.
P(On/Off):This is the on/off button.
Temperature and Compass Display
Press the on/off button, located to the far left, briey to
turn the compass/temperature display on or off.
If the display reads CAL, you will need to calibrate the
compass. For more information on calibration, see below.
To adjust between Fahrenheit and Celsius do the
following:
1. Press and hold the on/off button for approximately
four seconds until either a ashing F or C appears.
2. Press the button again to change the display to the
desired unit of measurement. After approximately
four seconds of inactivity, the new unit will be locked
in and the compass/temperature display will return.
If an abnormal temperature reading is displayed for an
extended period of time, please consult your dealer.
Under certain circumstances, a delay in updating
the temperature is normal.
2-61

Automatic Dimming Mirror Operation
The automatic dimming mirror function is turned
on automatically each time the ignition is started. To
operate the automatic dimming 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 approximately six seconds until the
green light comes on, indicating that the mirror is in
automatic dimming mode.
2. Turn off the automatic dimming mirror function
by pressing and holding the on/off button for
approximately 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 until a Z and a
zone number appear in the display. The compass
is now in zone mode.
2-62