2005 GMC SIERRA DENALI Owners Manual

Mirrors
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 see your dealer.
Under certain circumstances, a delay in updating the
temperature is normal.
2-29

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 appears in the display. The compass
is now in zone mode.
2-30

3. Keep pressing the on/off button until the desired
zone number appears in the display. Release the
button. After approximately four seconds of
inactivity, the new zone number will be locked in
and the compass/temperature display will return.
4. Calibrate the compass as described below.
Compass Calibration
The compass may need calibration if one of the
following occurs:
After approximately ve seconds, the display does
not show a compass heading (N for North, for
example), there may be a strong magnetic eld
interfering with the compass. Such interference may
be caused by a magnetic antenna mount, magnetic
note pad holder or a similar magnetic item.
The compass does not display the correct heading
and the compass zone variance is set correctly.In order to calibrate, CAL must be displayed in the
mirror compass windows. If CAL is not displayed, push
the on/off button for approximately 12 seconds or
until CAL is displayed.
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.
Passenger Air Bag Indicator
Your vehicle may be equipped with a passenger airbag
indicator, on the mirror glass, just above the buttons.
For more information, seePassenger Sensing System
on page 1-55.
Cleaning the Mirror
When cleaning the mirror, use a paper towel or similar
material dampened with glass cleaner. Do not spray
glass cleaner directly on the mirror as that may cause
the liquid cleaner to enter the mirror housing.
2-31

Outside Power Mirrors
If your vehicle is equipped
with outside power mirrors,
the controls are located
on the driver’s door
armrest.
Move the selector switch located above the control pad
to the left or right to choose the mirror you want to
adjust, then press the dots located on the four-way
control pad to adjust the mirror.
The mirrors include ground illumination lamps (puddle
lamps) in the base of the mirror. For more information on
these lamps, seePuddle Lamps on page 3-16.
The mirrors also include a memory function which works
in conjunction with the memory seats. SeeMemory
Seat on page 2-44.
Outside Power Foldaway Mirrors
If your vehicle is equipped
with this feature, the
controls are located on the
driver’s door armrest.
Move the upper selector switch to the left or right to
choose the mirror you want to adjust; then press the dots
located on the four-way control pad to adjust the mirror.
The mirrors may also include a memory function which
works together with the memory seats. See “Memory
Seats” underMemory Seat on page 2-44for more
information.
To fold or unfold the mirrors, move the selector switch,
located above the mirror control, to the middle position.
The mirror control will illuminate. Press the right or left
side of the mirror control to fold or unfold the mirrors. You
may notice the mirror glass adjust as the mirrors fold in;
this is normal. The mirror glass will reposition itself once
the mirrors are unfolded.
2-32

If the mirrors are accidentally folded/unfolded manually,
they may shake or utter at normal driving speeds
and may not stay in the unfolded position. If this
happens, you will need to reset the mirrors. See
“Resetting the Power Foldaway Mirrors” next.
Resetting the Power Foldaway Mirrors
You will need to reset the power foldaway mirrors if the
following occurs:
They are accidentally manually folded/unfolded.
The mirrors will not stay in the unfolded position.
The mirrors shake and utter at normal driving
speeds.
To reset the power foldaway mirrors, fold and unfold
them at least three times using the mirror controls. This
will reset them to their normal position.
Outside Automatic Dimming Mirror
The driver’s outside mirror will adjust for the glare of any
headlamps behind you. This feature is controlled by
the on and off settings on the electrochromic mirror. See
“Electrochromic Mirror Operation” underAutomatic
Dimming Rearview Mirror with OnStar
®, Compass and
Temperature Display on page 2-29.
Outside Curb View Assist Mirrors
If the vehicle has the memory package, the outside
mirrors are able to perform the curb view assist mirror
function. This feature will cause the passenger’s
and/or driver’s mirror to tilt to a preselected position
when the vehicle is in REVERSE (R). This feature may
be useful in allowing the driver to view the curb when
parallel parking. When the vehicle is shifted out of
REVERSE (R) and a short delay has occurred,
the passenger’s and/or driver’s mirror will return to its
original position.
To change the preselected tilt position, adjust the
mirrors to the desired position while the vehicle is in
REVERSE (R). When the vehicle is shifted out of
REVERSE (R), this new position is saved in memory as
the tilt position.
This feature can be turned on or off through the Driver
Information Center (DIC).
2-33

Outside Convex Mirror
Your passenger’s side mirror is convex. A convex
mirror’s surface is curved so you can see more from the
driver’s seat.
{CAUTION:
A convex mirror can make things (like other
vehicles) look farther away than they really are.
If you cut too sharply into the right lane, you
could hit a vehicle on your right. Check your
inside mirror or glance over your shoulder
before changing lanes.
Outside Heated Mirrors
The vehicle may have outside heated mirrors which
helps clear them of condensation, snow, and ice. There
is a heated mirror symbol on the driver’s side mirror
that indicates the feature.
When the rear window defogger button is pressed, the
heated mirrors are turned on. See “Rear Window
Defogger” underDual Automatic Climate Control System
on page 3-20for further information.
OnStar®System
OnStar®uses global positioning system (GPS) satellite
technology, wireless communications, and call centers
to provide you with a wide range of safety, security,
information, and convenience services.
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.onstarcanada.com. 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.onstarcanada.com.
2-34

OnStar®Services
For new vehicles equipped with OnStar®, the Safe and
Sound Plan is included for the rst year. 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
Information and Convenience Services
Online Concierge
Directions and Connections Plan
All Safe and Sound Plan Services
Driving Directions
RideAssist
Information and Convenience Services
OnStar®Personal Calling
As an OnStar®subscriber, the Personal Calling
capability is available if your hand-held cell phone is
lost, forgotten, or has a low battery. It is a hands-free
wireless phone that is integrated into the vehicle.
Calls can be placed nationwide using simple voice
commands with no additional contracts and no additional
roaming charges. To nd out more about OnStar
®
Personal Calling, refer to the OnStar®user’s guide in
the vehicle’s glove box, visit www.onstar.com or
www.onstarcanada.com; or speak to an OnStar
®advisor
by pressing the OnStar®button or calling
1-888-4-ONSTAR (1-888-466-7827).
OnStar®Virtual Advisor
Virtual Advisor is a feature of OnStar®Personal Calling
that uses minutes to access up-to-date weather and
traffic reports for your area, news and sports updates,
stock quotes, entertainment, and more. You are
also able to listen and reply to E-mail through the
vehicle’s audio system. Customize your information
prole at www.myonstar.com. See the OnStar
®user’s
guide for more information.
2-35

OnStar®Steering Wheel Controls
A steering wheel control can be used to interact with the
OnStar®personal calling feature.
Press the control with
this symbol on the
steering wheel to make
a phone call.
When calling into voice mail systems, or to dial directory
numbers, press the control, say the number(s), then
say “dial”.
See the OnStar
®user’s guide for more information.
HomeLink®Transmitter
HomeLink®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. Additional
HomeLink
®information can be found on the internet at
www.homelink.com or by calling 1-800-355-3515.
If your vehicle is equipped with the HomeLink
®
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.
2-36