2005 GMC ENVOY XL service

If the lights do not come on, you should take your vehicle
to your dealer for service. An indicator light will ash while
shifting the transfer case. It will stay on when the shift is
complete. If for some reason the transfer case cannot
make a requested shift, it will return to the last chosen
setting.
If the service four-wheel drive light on the instrument
panel cluster stays on, you should take your vehicle
to your dealer for service. SeeService Four-Wheel Drive
Warning Light on page 3-47for further information.
Shifting Into 4HI (Four-Wheel High)
or A4WD (Automatic Four-Wheel Drive)
Turn the knob to 4HI or A4WD. This can be done at any
speed unless you are shifting out of 4LO. The indicator
light will ash while shifting. It will remain on when
the shift is complete.
Shifting Into 2HI (Two-Wheel High)
Turn the knob to 2HI. This can be done at any speed
unless you are shifting out of 4LO.
Shifting Into 4LO (Four-Wheel Low)
To shift to 4LO, the vehicle’s engine must be running
and the vehicle must be stopped or moving less than
2 mph (3.2 km/h) with the transmission in NEUTRAL (N).
The preferred method for shifting into 4LO is to have
your vehicle moving 1 or 2 mph (1.6 to 3.2 km/h).Turn the knob to 4LO. You must wait for the 4LO indicator
light to stop ashing and stay on before shifting the
transmission into gear.
If you turn the knob to 4LO when your vehicle is in
gear and/or moving, the 4LO indicator light will ash
for 30 seconds and not complete the shift unless your
vehicle is moving less than 2 mph (3.2 km/h) and
the transmission is in NEUTRAL (N). After 30 seconds,
the transfer case will return to the setting last chosen.
Shifting Out of 4LO (Four-Wheel Low)
To shift from 4LO to 4HI, A4WD drive, or 2HI your
vehicle must be stopped or moving less than
2 mph (3.2 km/h) with the transmission in NEUTRAL (N)
and the engine running. The preferred method for
shifting out of 4LO is to have your vehicle moving
1 or 2 mph (1.6 to 3.2 km/h). Turn the knob to 4HI,
A4WD or 2HI. You must wait for the 4HI, A4WD, or
2HI indicator light to stop ashing and stay off before
shifting your transmission into gear.
If the knob is turned to 4HI, A4WD, or 2HI when your
vehicle is in gear and/or moving, the 4HI, A4WD, or
2HI indicator light will ash for 30 seconds. It will
not complete the shift unless your vehicle is moving
less than 2 mph (3.2 km/h) with the transmission
in NEUTRAL (N).
2-29

{CAUTION:
If your vehicle has four-wheel drive, it
will be free to roll — even if the shift lever
is in PARK (P) — if the transfer case is in
NEUTRAL. So be sure the transfer case is in a
drive gear — not in NEUTRAL. SeeFour-Wheel
Drive on page 2-27.
Follow the proper steps to be sure your vehicle will
not move. SeeShifting Into Park (P) on page 2-32.
If you are pulling a trailer, seeTowing a Trailer
on page 4-55.
Mirrors
Manual Rearview Mirror
While sitting in a comfortable driving position, adjust
the rearview mirror so you can see clearly behind your
vehicle. Grip the mirror in the center to move it up
or down and side to side. The day/night control, located
at the bottom of the mirror, adjusts the mirror to
reduce headlamp glare from behind during evening or
dark conditions. Turn the control clockwise for night use;
return it to the center for daytime use.
Manual Rearview Mirror with
OnStar
®
The vehicle may have a rearview mirror with the
OnStar®system.
Control buttons for the OnStar
®system are at the
bottom of the mirror. See your GM dealer for more
information on the OnStar
®system and how to
subscribe to OnStar®. Also, seeOnStar®System on
page 2-47for more information about the services
OnStar
®provides.
2-37

Manual Rearview Mirror with
OnStar
®and Compass
The vehicle may have a manual rearview mirror with
OnStar®and an eight-point compass display located
in the upper right.
Control buttons for the OnStar
®system are at the
bottom of the mirror. See your GM dealer for more
information on the OnStar
®system. Also, seeOnStar®
System on page 2-47for more information about the
services OnStar®provides.
Mirror Operation
While sitting in a comfortable position, adjust the
rearview mirror so you can see clearly behind your
vehicle. Grip it in the center and move it up or down
and side to side. The day/night control, located at
the bottom of the mirror, adjusts the mirror to reduce
headlamp glare from behind during evening or dark
conditions. Push the control for daytime use; pull it
for night use.
Compass Display
O
(On/Off):Press this button to turn the compass
on or off. The compass display, can show a maximum
of two characters. For example, NE is displayed for
north-east.
When the ignition and the compass/temperature
feature are on, character boxes will appear for about
two seconds. After two seconds, the mirror will display
the direction the vehicle is facing.
Compass Calibration
When on, the compass automatically calibrates as
the vehicle is driven. If, after two seconds, the display
does not show a compass direction, (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. If the
letter C should ever appear in the compass window,
the compass may need calibration.
Press and hold the on/off button for nine seconds to
activate the compass calibration mode. CAL will
be displayed in the compass window on the mirror.
The mirror can be calibrated by driving the vehicle
in circles at 5 mph (8 km/h) or less until the display
shows a direction.
2-40

Manual Rearview Mirror with
OnStar
®, Compass, and
Temperature Display
The vehicle may have a manual rearview mirror with
OnStar®and an eight-point compass and temperature
display located in the upper right.
Control buttons for the OnStar
®system are at the
bottom of the mirror. See your GM dealer for more
information about the OnStar
®system. Also, see
OnStar®System on page 2-47for more information
about the services OnStar®provides.
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.
Mirror Operation
While sitting in a comfortable position, adjust the
rearview mirror so you can see clearly behind your
vehicle. Grip it in the center and move it up or down
and side to side. The day/night control, located at
the bottom of the mirror, adjusts the mirror to reduce
headlamp glare from behind during evening or dark
conditions. Push the control for daytime use; pull it
for night use.
Temperature and Compass Display
O
(On/Off):Press this button to turn the compass and
temperature display on or off. The compass display,
can show a maximum of two characters. For example,
NE is displayed for north-east.
When the ignition and the compass/temperature
feature are on, character boxes will appear for about
two seconds. After two seconds, the mirror will display
the direction the vehicle is facing and the outside
temperature.
To set the temperature in Fahrenheit or Celsius, do the
following:
1. Press and hold the on/off button until either a
ashing F or C appears.
2. Press the button again to change the display
to the desired unit of measurement. After about
four seconds of inactivity, the new unit will be
locked in and the compass/temperature display
will return.
Compass Calibration
When on, the compass automatically calibrates
as the vehicle is driven. If, after two seconds,
the display does not show a compass direction,
N for North, for example, there may be a strong
magnetic eld interfering with the compass.
2-44

Outside Convex Mirror
{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 or left lane,
you could hit a vehicle. Check your inside
mirror or glance over your shoulder before
changing lanes.
The passenger’s outside mirror is convex. A convex
mirror’s surface is curved so more can be seen from the
driver’s seat.
Outside Heated Mirrors
If the vehicle has this feature, when the rear window
defogger is turned on, the outside driver’s and
passenger’s rearview mirrors also heat to help clear
them of ice, snow, and condensation. SeeDual Climate
Control System on page 3-20orDual Automatic
Climate Control System on page 3-23for more
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.
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
with an advisor.
2-47

Safe and Sound Plan

Advanced Automatic Collision Notication
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 an available 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. Customize
your information prole at www.myonstar.com. See the
OnStar
®user’s guide for more information.
2-48

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.
HomeLink®Wireless Control
System Operation
Do not use the HomeLink®Transmitter 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 HomeLink
®Transmitter.
Read the instructions completely before attempting to
program the HomeLink
®Transmitter. Because of
the steps involved, it may be helpful to have another
person available to assist you in programming the
transmitter.Keep the original transmitter for use in other vehicles as
well as for future HomeLink
®programming. It is also
recommended that upon the sale of the vehicle,
the programmed HomeLink
®buttons should be erased
for security purposes. Refer to “Erasing HomeLink®
Buttons” or, for assistance, contact HomeLink®on the
Internet at: www.homelink.com or by calling
1-800-355-3515.
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.
Programming HomeLink®
Your vehicle’s engine should be turned off while
programming the transmitter. Follow these steps to
program up to three channels:
1. Press and hold down the two outside buttons,
releasing only when the 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
transmitter to the remaining two HomeLink
®buttons.
2-50

Oil Pressure Gage........................................3-44
Change Engine Oil Light................................3-45
Security Light...............................................3-45
Cruise Control Light......................................3-46
Reduced Engine Power Light.........................3-46
Highbeam On Light.......................................3-46
Service Four-Wheel Drive
Warning Light...........................................3-47
Check Gages Warning Light...........................3-47
Gate Ajar Light.............................................3-47
Fuel Gage...................................................3-48
Low Fuel Warning Light.................................3-48
Check Gas Cap Light....................................3-48
Driver Information Center (DIC).......................3-49
DIC Operation and Displays...........................3-50
DIC Warnings and Messages.........................3-53
DIC Vehicle Customization.............................3-56Audio System(s).............................................3-62
Setting the Time...........................................3-62
Radio with CD (Base Level)...........................3-63
Radio with CD (MP3)....................................3-73
Radio with Cassette and CD..........................3-87
Radio with Six-Disc CD................................3-100
Navigation/Radio System..............................3-113
Rear Seat Entertainment System...................3-113
Rear Seat Audio (RSA)................................3-124
Theft-Deterrent Feature................................3-125
Audio Steering Wheel Controls......................3-126
Radio Reception.........................................3-127
Care of the Cassette Tape Player.................3-127
Care of Your CDs and DVDs........................3-128
Care of the CD and DVD Player...................3-128
Fixed Mast Antenna....................................3-129
XM™ Satellite Radio Antenna System............3-129
Chime Level Adjustment...............................3-129
Section 3 Instrument Panel
3-2