2009 GMC ENVOY warning light

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

Vehicle Symbol Chart
Here are some additional symbols that may be found on
the vehicle and what they mean. For more information
on the symbol, refer to the index.
0:Adjustable Pedals
9:Airbag Readiness Light
#:Air Conditioning
!:Antilock Brake System (ABS)
g:Audio Steering Wheel Controls or OnStar®
$:Brake System Warning Light
":Charging System
I:Cruise Control
B:Engine Coolant Temperature
O:Exterior Lamps
#:Fog Lamps
.:Fuel Gage
+:Fuses
i:Headlamp High/Low-Beam Changer
j:LATCH System Child Restraints
*:Malfunction Indicator Lamp
::Oil Pressure
}:Power
/:Remote Vehicle Start
>:Safety Belt Reminders
7:Tire Pressure Monitor
F:Traction Control
M:Windshield Washer Fluid
iv

Ignition Positions
The ignition switch has
four different positions.
Press the brake pedal, and turn the ignition to ON/RUN
to shift out of P (Park).
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/retailer.A (LOCK/OFF):This position locks the ignition and
transmission. The key can only be removed in
LOCK/OFF.
The steering can bind with the wheels turned off center.
If this happens, move the steering wheel from right to
left while turning the key to ACC/ACCESSORY. If
this doesn’t work, then the vehicle needs service.
B (ACC/ACCESSORY):This is the position in which
you can operate electrical accessories.
C (ON/RUN):This position can be used to operate the
electrical accessories and to display some instrument
panel warning and indicator lights. The switch stays
in this position when the engine is running.
If you leave the key in the ACC/ACCESSORY or
ON/RUN position with the engine off, the battery could
be drained. You may not be able to start the vehicle
if the battery is allowed to drain for an extended period
of time.
D (START):This is the position that starts the engine.
When the engine starts, release the key. The ignition
switch returns to ON/RUN for driving.
A warning tone will sound when the driver door is
opened, the ignition is in ACC/ACCESSORY or
LOCK/OFF and the key is in the ignition.
2-21

4n(Four-Wheel Low):This setting also engages the
front axle and delivers extra torque. It sends maximum
power to all four wheels. You might choose this setting if
you are driving off-road in deep sand, deep mud, and
climbing or descending steep hills.
{CAUTION:
Shifting the transfer case to Neutral can cause the
vehicle to roll even if the transmission is in
P (Park). You or someone else could be seriously
injured. Be sure to set the parking brake before
placing the transfer case in Neutral. SeeParking
Brake on page 2-33.
Neutral:Shift the vehicle’s transfer case to Neutral only
when towing the vehicle. SeeRecreational Vehicle
Towing on page 4-38for more information.An indicator light in the knob will show you which
position the transfer case is in. The indicator lights will
come on briey when you turn on the ignition and
one will stay on. If the lights do not come on, you should
take the vehicle to your dealer/retailer for service. An
indicator light will ash while shifting the transfer case. It
will stay on when the shift is complete. If the transfer
case cannot make a requested shift, it will return to the
last chosen setting.
If the service Four-Wheel Drive Warning Light on the
instrument panel cluster stays on, you should take
the vehicle to your dealer/retailer for service. See
Service Four-Wheel Drive Warning Light on page 3-44
for further information.
Shifting Into Four-Wheel High or Automatic
Four-Wheel Drive
Turn the knob to Four-Wheel High or Automatic
Four-Wheel Drive. This can be done at any speed
unless you are shifting out of Four-Wheel Low. The
indicator light will ash while shifting. It will remain on
when the shift is complete.
2-30

Parking Brake
To set the parking brake,
hold the regular brake
pedal down with your foot
and pull up on the parking
brake lever located
between the seats.
To release the parking brake, hold the regular brake
pedal down. Pull the parking brake lever up until you can
press in the button at the end of the lever. Hold the
button in as you move the parking brake lever all the
way down.If the ignition is on, the brake system warning light on
the instrument panel cluster will come on. SeeBrake
System Warning Light on page 3-35.
Notice:Driving with the parking brake on can
overheat the brake system and cause premature
wear or damage to brake system parts. Verify that
the parking brake is fully released and the brake
warning light is off before driving.
If you are towing a trailer and you must park on a hill,
seeTowing a Trailer on page 4-46.
2-33

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

Brake System Warning Light..........................3-35
Antilock Brake System (ABS) Warning Light.....3-36
StabiliTrak
®Service Light...............................3-36
StabiliTrak®Indicator Light.............................3-37
Engine Coolant Temperature Gage..................3-37
Tire Pressure Light.......................................3-38
Malfunction Indicator Lamp.............................3-38
Oil Pressure Gage........................................3-42
Change Engine Oil Light................................3-43
Security Light...............................................3-43
Cruise Control Light......................................3-43
Reduced Engine Power Light.........................3-44
Highbeam On Light.......................................3-44
Service Four-Wheel Drive Warning Light..........3-44
Check Gages Warning Light...........................3-45
Gate Ajar Light.............................................3-45
Fuel Gage...................................................3-46
Low Fuel Warning Light.................................3-47
Check Gas Cap Light....................................3-47Driver Information Center (DIC).......................3-47
DIC Operation and Displays...........................3-48
DIC Warnings and Messages.........................3-51
DIC Vehicle Customization.............................3-56
Audio System(s).............................................3-62
Setting the Clock..........................................3-63
Radio(s)......................................................3-64
Using an MP3..............................................3-80
XM Radio Messages.....................................3-84
Navigation/Radio System...............................3-86
Bluetooth
®...................................................3-86
Rear Seat Entertainment (RSE) System...........3-96
Rear Seat Audio (RSA)................................3-109
Theft-Deterrent Feature................................3-110
Audio Steering Wheel Controls......................3-110
Radio Reception.........................................3-111
Fixed Mast Antenna....................................3-112
XM™ Satellite Radio Antenna System............3-112
Chime Level Adjustment...............................3-112
Section 3 Instrument Panel
3-2

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