2009 GMC ENVOY climate control

Seats and Restraint System............................. 1-1
Front Seats
............................................... 1-2
Rear Seats
..............................................1-11
Safety Belts
.............................................1-13
Child Restraints
.......................................1-32
Airbag System
.........................................1-55
Restraint System Check
............................1-70
Features and Controls..................................... 2-1
Keys
........................................................ 2-3
Doors and Locks
....................................... 2-7
Windows
.................................................2-13
Theft-Deterrent Systems
............................2-16
Starting and Operating Your Vehicle
...........2-20
Mirrors
....................................................2-39
OnStar
®System
......................................2-43
Universal Home Remote System
................2-46
Storage Areas
.........................................2-51
Sunroof
..................................................2-55
Instrument Panel............................................. 3-1
Instrument Panel Overview
.......................... 3-4
Climate Controls
......................................3-19
Warning Lights, Gages, and Indicators
........3-27
Driver Information Center (DIC)
..................3-47
Audio System(s)
.......................................3-62Driving Your Vehicle....................................... 4-1
Your Driving, the Road, and the Vehicle
....... 4-2
Towing
...................................................4-38
Service and Appearance Care.......................... 5-1
Service
..................................................... 5-3
Fuel
......................................................... 5-5
Checking Things Under the Hood
...............5-10
Rear Axle
...............................................5-43
Four-Wheel Drive
.....................................5-44
Front Axle
...............................................5-44
Headlamp Aiming
.....................................5-45
Bulb Replacement
....................................5-46
Windshield Wiper Blade Replacement
.........5-50
Tires
......................................................5-53
Appearance Care
...................................5-103
Vehicle Identication
...............................5-111
Electrical System
....................................5-112
Capacities and Specications
...................5-120
Maintenance Schedule..................................... 6-1
Maintenance Schedule
................................ 6-2
Customer Assistance Information.................... 7-1
Customer Assistance and Information
........... 7-2
Reporting Safety Defects
...........................7-14
Vehicle Data Recording and Privacy
...........7-16
Index................................................................ 1
2009 GMC Envoy and Envoy Denali Owner ManualM

Liftgate/Liftglass
{CAUTION:
It can be dangerous to drive with the liftgate or
liftglass open because carbon monoxide (CO) gas
can come into your vehicle. You cannot see or
smell CO. It can cause unconsciousness and even
death. If you must drive with the liftgate open or if
electrical wiring or other cable connections must
pass through the seal between the body and the
liftgate or liftglass:
Make sure all other windows are shut.
Turn the fan on your climate control system to
its highest speed and select the control setting
that will force outside air into your vehicle. See
“Climate Control System” in the Index.
If you have air outlets on or under the
instrument panel, open them all the way. See
Engine Exhaust on page 2-37.
Liftgate Release
To unlock the liftgate, use the power door lock switch or
the remote keyless entry transmitter. SeeRemote
Keyless Entry (RKE) System Operation on page 2-5.
The liftglass will also unlock when the liftgate is
unlocked.
Press the button on the liftglass to open it. To open the
entire liftgate, lift the handle located in the center of
the liftgate. When the liftgate is opened, the liftglass will
lock after a short delay.
Emergency Release for Opening
Liftgate
1. Remove the trim plug, located on the inside of the
liftgate in the center, to expose the access hole in
the trim panel.
2. Use a tool to reach through the access hole in the
trim panel.
3. Pry the left release lever up to the unlock position.
Pry the right release lever up to unlatch the liftgate.
4. Reinstall the trim plug.
2-12

Outside Power Mirrors
Vehicles with outside power mirrors have controls
located on the driver door.
To adjust the mirrors:
1. Turn the control knob left or right to select the
driver’s or passenger mirror.
2. Move the control knob to the left or right or up or
down to position the mirror to see a little of the
outside of the vehicle.
3. After adjusting the position of the mirrors, turn the
knob to the center off position so that the mirrors
do not move.
If the end of travel position in any direction of the mirror
is reached, it will enter a ratcheting mode. This action
is harmless. It is a warning that the mirror can go
no further. To stop this action, back the mirror up by
moving the knob in the opposite direction.
Manually fold the mirrors inward to prevent damage
when going through an automatic car wash. To
fold, push the mirrors toward the vehicle. To return the
mirrors to their original position, push outward.
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 lane, you could
hit a vehicle on the right. Check the inside mirror
or glance over your shoulder before changing
lanes.
The passenger side mirror is convex shaped. A convex
mirror’s surface is curved so more can be seen from
the driver seat.
Outside Heated Mirrors
<(Rear Window Defogger):Press to heat the
mirrors. See “Rear Window Defogger” underDual
Climate Control System on page 3-19orDual Automatic
Climate Control System on page 3-22for more
information.
2-42

Center Console Storage
Pull the front lever on the center console while lifting the
top to open it.
The console has cupholders on the front and rear of the
storage compartment.
The console may also contain:
Rear Seat Audio Controls
Rear Seat Accessory Power Outlets
Rear Climate Control
To open the center armrest compartment, lift the cover by
pulling up on the latch handle located under the front
edge of the armrest.
Luggage Carrier
{CAUTION:
If something is carried on top of the vehicle that is
longer or wider than the luggage carrier — like
paneling, plywood, or a mattress— the wind can
catch it while the vehicle is being driven. This can
cause a driver to lose control. The item being
carried could be violently torn off, and this could
cause a collision, and damage the vehicle. Items
may be carried inside. Never carry something
longer or wider than the luggage carrier on top of
the vehicle.
If your vehicle has a luggage carrier, it will allow you to
load things on top of your vehicle. The luggage carrier
has side rails attached to the roof, places to use for tying
things down and may have sliding crossrails. These let
you load some other things on top of your vehicle, as long
as they are not wider or longer than the luggage carrier.
2-52

Instrument Panel Overview...............................3-4
Hazard Warning Flashers................................3-6
Horn .............................................................3-6
Tilt Wheel.....................................................3-6
Turn Signal/Multifunction Lever.........................3-7
Turn and Lane-Change Signals........................3-7
Headlamp High/Low-Beam Changer..................3-8
Flash-to-Pass.................................................3-8
Windshield Wipers..........................................3-8
Windshield Washer.........................................3-9
Rear Window Wiper/Washer.............................3-9
Headlamp Washer........................................3-10
Cruise Control..............................................3-10
Headlamps..................................................3-13
Headlamps on Reminder................................3-14
Daytime Running Lamps (DRL).......................3-14
Automatic Headlamp System..........................3-14
Fog Lamps ..................................................3-15
Instrument Panel Brightness...........................3-16
Dome Lamps ...............................................3-16
Dome Lamp Override....................................3-16
Entry Lighting...............................................3-16Exit Lighting.................................................3-17
Reading Lamps............................................3-17
Electric Power Management...........................3-17
Battery Run-Down Protection..........................3-18
Accessory Power Outlet(s).............................3-18
Ashtray(s) and Cigarette Lighter......................3-19
Climate Controls............................................3-19
Dual Climate Control System..........................3-19
Dual Automatic Climate Control System...........3-22
Outlet Adjustment.........................................3-26
Rear Climate Control System.........................3-26
Warning Lights, Gages, and Indicators............3-27
Instrument Panel Cluster...............................
.3-28
Speedometer and Odometer...........................3-29
Trip Odometer..............................................3-29
Tachometer.................................................3-29
Safety Belt Reminders...................................3-30
Airbag Readiness Light..................................3-31
Passenger Airbag Status Indicator...................3-32
Charging System Light..................................3-33
Voltmeter Gage............................................3-34
Section 3 Instrument Panel
3-1

The main components of the instrument panel are the following:
A.Headlamps on page 3-13.Dome Lamp Override
on page 3-16.Instrument Panel Brightness on
page 3-16.Fog Lamps on page 3-15(If Equipped).
B.Outlet Adjustment on page 3-26.
C.Turn Signal/Multifunction Lever on page 3-7.
D. OnStar
®and Audio Steering Wheel Controls.
SeeAudio Steering Wheel Controls on page 3-110.
E.Instrument Panel Cluster on page 3-28.
F.Audio Steering Wheel Controls on page 3-110.
G.Ignition Positions on page 2-21.
H.Audio System(s) on page 3-62.
I.Dual Climate Control System on page 3-19.
J.Hood Release on page 5-11.
K. Driver Information Center (DIC) Steering Wheel
Controls. SeeDriver Information Center (DIC)
on page 3-47.L. Transfer Case Controls. See “Automatic Transfer
Case” underFour-Wheel Drive on page 2-28.
M. Shift Lever and StabiliTrak
®(If Equipped) Button.
SeeShifting Into Park on page 2-34andStabiliTrak®
System on page 4-6.
N. Lighter. SeeAshtray(s) and Cigarette Lighter on
page 3-19.
O.Accessory Power Outlet(s) on page 3-18.
P.Parking Brake on page 2-33.
Q. Rear Window Washer/Wiper. SeeWindshield
Washer on page 3-9.
R. Rear Window Defogger. SeeDual Climate Control
System on page 3-19andDual Automatic Climate
Control System on page 3-22.
S.Glove Box on page 2-51.
3-5

Exit Lighting
With exit lighting, the interior lamps come on when you
remove the key from the ignition. If the dome override
is off, these lamps stay on for a short period of time and
then go out.
Reading Lamps
The reading lamps are located in the front console.
Press the lens on the lamps to turn the reading lamps
on or off.
Electric Power Management
The vehicle has Electric Power Management (EPM)
that estimates the battery’s temperature and state
of charge. It then adjusts the voltage for best
performance and extended life of the battery.
When the battery’s state of charge is low, the voltage
is raised slightly to quickly bring the charge back
up. When the state of charge is high, the voltage is
lowered slightly to prevent overcharging. If the vehicle
has a voltmeter gage or a voltage display on the
Driver Information Center (DIC), you may see the
voltage move up or down. This is normal. If there is a
problem, an alert will be displayed.The battery can be discharged at idle if the electrical
loads are very high. This is true for all vehicles.
This is because the generator (alternator) may not be
spinning fast enough at idle to produce all the power that
is needed for very high electrical loads.
A high electrical load occurs when several of the
following are on, such as: headlamps, high beams,
fog lamps, rear window defogger, climate control fan at
high speed, heated seats, engine cooling fans, trailer
loads, and loads plugged into accessory power outlets.
EPM works to prevent excessive discharge of the
battery. It does this by balancing the generator’s output
and the vehicle’s electrical needs. It can increase
engine idle speed to generate more power, whenever
needed. It can temporarily reduce the power demands of
some accessories.
Normally, these actions occur in steps or levels, without
being noticeable. In rare cases at the highest levels
of corrective action, this action may be noticeable to
the driver. If so, a Driver Information Center (DIC)
message might be displayed, such as BATTERY
SAVER ACTIVE, BATTERY VOLTAGE LOW, or
LOW BATTERY. If this message is displayed, it is
recommended that the driver reduce the electrical loads
as much as possible. SeeDIC Warnings and Messages
on page 3-51.
3-17

Battery Run-Down Protection
This feature shuts off the dome, courtesy, and vanity
lamps if they are left on for more than 20 minutes when
the ignition is off. This helps to keep the battery from
running down.
If the battery run-down protection shuts off the interior
lamps, it may be necessary to do one of the following to
return to normal operation:
Shut off all lamps and close all doors.
Turn the ignition key to ON/RUN.
This feature also turns off the parking lamps and
headlamps under most circumstances, if they
are left on. Turn the exterior lamps knob to turn
them back on.
Accessory Power Outlet(s)
Accessory power outlets let you plug in auxiliary
electrical equipment, such as a cellular telephone.
The vehicle has three accessory power outlets.
There are two outlets located below the climate
controls and one outlet is on the rear of the center oor
console.Remove the cover from the outlet to use the outlet.
Be sure to put the cover back on when not using the
accessory power outlet.
Certain electrical accessories may not be compatible
with the accessory power outlet and could result
in blown vehicle or adaptor fuses. If you experience a
problem, see your dealer/retailer for additional
information on the accessory power outlets.
Notice:Adding any electrical equipment to the
vehicle can damage it or keep other components
from working as they should. The repairs would not
be covered by the vehicle warranty. Do not use
equipment exceeding maximum amperage rating of
20 amperes. Check with your dealer/retailer before
adding electrical equipment.
When adding electrical equipment, be sure to follow
the proper installation instructions included with
the equipment.
Notice:Improper use of the power outlet can cause
damage not covered by the warranty. Do not hang
any type of accessory or accessory bracket from the
plug because the power outlets are designed for
accessory power plugs only.
3-18