key GMC ENVOY DENALI 2008 Owner's Guide

Hazard Warning Flashers
The hazard warning ashers warn others. They also
let the police and other emergency vehicles know you
have a problem.
The hazard warning
asher button is located
on top of the steering
column.
Press the button to make the front and rear turn signal
lamps ash on and off. Press the button again to turn the
ashers off.
The hazard warning ashers work no matter what
ignition position the key is in, and even if the key is
not in the ignition.
When the hazard warning ashers are on, your vehicle’s
turn signals will not work.
Other Warning Devices
If you carry reective triangles, you can set them up at
the side of the road about 300 feet (100 m) behind
your vehicle.
Horn
To sound the horn, press the horn symbols on the
steering wheel pad.
Tilt Wheel
The tilt lever is on the
outboard side of the
steering column, under
the turn signal lever.
Do not adjust the steering wheel while driving.
Hold the steering wheel and pull the lever toward you to
change the position, then release the lever to lock.
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Headlamps on Reminder
A reminder tone sounds when the headlamps or parking
lamps are manually turned on, if the driver’s door is
open and the ignition is in LOCK or ACC. To turn the
tone off, turn the knob all the way counterclockwise.
In the automatic mode, the headlamps turn off once the
ignition key is in LOCK.
Daytime Running Lamps (DRL)
Daytime Running Lamps (DRL) can make it easier
for others to see the front of your vehicle during the day.
DRL can be helpful in many different driving conditions,
but they can be especially helpful in the short periods
after dawn and before sunset. Fully functional DRL
are required on all vehicles rst sold in Canada.
The DRL system makes the headlamps come on at
reduced brightness when the following conditions
are met:
The ignition is on.
The exterior lamps knob is in automatic
headlamp mode.
The light sensor detects daytime light.
The transmission is not in PARK (P).When the DRL are on, only the headlamps will be on.
The taillamps, sidemarker and other lamps will not
be on. The instrument panel will not be lit up either.
When it begins to get dark, the headlamps automatically
switch from DRL to the regular headlamps.
Automatic Headlamp System
When it is dark enough outside, the Automatic
Headlamp System turns on the headlamps when the
vehicle is started and after the transaxle has been
shifted out of the PARK (P) position. The headlamps,
taillamps, sidemarker, and parking lamps will come
on. The instrument panel lights and radio lights will
also turn on at normal brightness. Once on, the system
remains on during these conditions even if the vehicle
is shifted back into PARK (P).
The vehicle has a light sensor on the top of the
instrument panel. Make sure it is not covered or the
system may come on whenever the ignition is on and
the vehicle is shifted out of the PARK (P) position.
The system could also turn on the lamps when driving
through a parking garage, heavy overcast weather
or a tunnel. This is normal.
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Instrument Panel Brightness
Press the knob located
next to the exterior lamps
knob to extend it.
Turn the knob to adjust the instrument panel lights. Turn
the knob all the way up to turn on the interior lamps.
Press the knob back into its stored position when
you are not using it.
Dome Lamps
The dome lamps will come on when you open a door
unless the dome lamp override is pressed in.
Dome Lamp Override
The dome override button
is located below the
exterior lamps knob.
To turn the dome lamps off, press the button. The dome
lamps will remain off when a door is open. This will
override the illuminated entry feature unless you use the
Remote Keyless Entry (RKE) transmitter to unlock the
vehicle.
To return the lamps to automatic operation, press the
button again. The dome lamps come on when a door is
opened.
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Entry Lighting
The vehicle has entry lighting.
When any door is opened, the dome lamps come on as
long as the dome override lamp override button is not
pressed in. When all the doors are closed, the lamps
stay on for a short period of time and then turn off
automatically. If you use the Remote Keyless Entry (RKE)
transmitter to unlock the vehicle, the interior lamps come
on for a short time whether or not the dome lamp override
is on.
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 put the charge back in. 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 loads are on: 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.
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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 or
Service Battery Charging System. 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 3-53.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 will 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 RUN.
This feature will also turn off the parking lamps and
headlamps under most circumstances, if they are left on.
If you would like to turn them back on, turn the exterior
lamps knob.
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If, after several seconds, both status indicator lights
remain on, or if there are no lights at all, there may
be a problem with the lights or the passenger sensing
system. See your dealer/retailer for service.
{CAUTION:
If the airbag readiness light in the instrument
panel cluster ever comes on and stays on,
it means that something may be wrong with
the airbag system. If this ever happens, have
the vehicle serviced promptly, because an
adult-size person sitting in the right front
passenger’s seat may not have the protection
of the airbag(s). SeeAirbag Readiness Light
on page 3-33for more on this, including
important safety information.
Charging System Light
This light will come on
briey when you turn on the
ignition key, but the engine
is not running, as a check
to show you it is working.
It should go out once the engine is running. If it stays
on, or comes on while driving, there could be a problem
with the charging system. A charging system Driver
Information Center (DIC) message may also appear.
SeeDIC Warnings and Messages on page 3-53for
more information. This light could indicate that there
are problems with a generator drive belt, or that there is
an electrical problem. Have it checked right away. If you
must drive a short distance with the light on, be certain
to turn off all the accessories, such as the radio and air
conditioner.
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Brake System Warning Light
When the ignition is on, the brake system warning light
will come on when you set your parking brake. The light
will stay on if your parking brake does not release fully.
If it stays on after your parking brake is fully released, it
means your vehicle has a brake problem. A chime may
also sound when the light comes on.
Your vehicle’s hydraulic brake system is divided into
two parts. If one part is not working, the other part can
still work and stop you. For good braking, though,
you need both parts working well.
If the warning light comes on, there could be a brake
problem. Have your brake system inspected right away.This light should come on briey when you turn the
ignition key to RUN. If it does not come on then, have it
xed so it will be ready to warn you if there is a problem.
If the light comes on while you are driving, pull off the
road and stop carefully. You may notice that the pedal
is harder to push or the pedal may go closer to the
oor. It may take longer to stop. If the light is still on,
have the vehicle towed for service. SeeTowing
Your Vehicle on page 4-40.
{CAUTION:
Your brake system may not be working
properly if the brake system warning light is on.
Driving with the brake system warning light on
can lead to an accident. If the light is still on
after you have pulled off the road and stopped
carefully, have the vehicle towed for service.
United States
Canada
3-38

ICE POSSIBLE
This message may display if the outside temperature
reaches a level where ice could form on the roadway.
Adjust your driving accordingly. If the temperature
rises to a safe level, the message clears. This message
clears itself after 10 seconds, or you can manually
clear it from the DIC display.
KEY FOB # BATTERY LOW
This message displays if a Remote Keyless Entry (RKE)
transmitter battery is low. Replace the battery in the
transmitter. See “Battery Replacement” underRemote
Keyless Entry (RKE) System Operation on page 2-5.
LEFT REAR DOOR AJAR
This message displays and a chime sounds if the driver
side rear door is not fully closed. Stop and turn off
the vehicle, check the door for obstructions, and close
the door again. Check to see if the message still
appears on the DIC.
OIL PRESSURE LOW/STOP ENGINE
Notice:If you drive your vehicle while the engine
oil pressure is low, severe engine damage may
occur. If a low oil pressure warning appears on the
Driver Information Center (DIC), stop the vehicle
as soon as possible. Do not drive the vehicle until
the cause of the low oil pressure is corrected.
SeeEngine Oil on page 5-16for more information.
This message displays if low oil pressure levels
occur. Stop the vehicle as soon as safely possible and
do not operate it until the cause of the low oil pressure
has been corrected. Check the oil as soon as possible
and have your vehicle serviced by your dealer/retailer.
SeeEngine Oil on page 5-16.
PASSENGER DOOR AJAR
This message displays and a chime sounds if the
passenger door is not fully closed. Stop and turn off
the vehicle, check the door for obstructions, and close
the door again. Check to see if the message still
appears on the DIC.
3-55

Lock Doors
Press the customization button until LOCK DOORS: IN
GEAR appears in the display. To select your preference
for automatic locking, press the select button while LOCK
DOORS: IN GEAR is displayed on the DIC. Pressing the
select button will scroll through the following settings:
LOCK DOORS: IN GEAR (default):The doors will lock
when the vehicle is shifted out of PARK (P).
LOCK DOORS: WITH SPEED:The doors will lock
when the vehicle speed is above 8 mph (13 km/h) for
three seconds.
To select a setting and move on to the next feature,
press the customization button while the desired setting
is displayed on the DIC.
SeeProgrammable Automatic Door Locks on page 2-9
for more information.
Unlock Doors
Press the customization button until UNLOCK DOORS:
IN PARK appears in the display. To select your
preference for automatic unlocking, press the select
button while UNLOCK DOORS: IN PARK is displayed
on the DIC. Pressing the select button will scroll through
the following settings:
UNLOCK DOORS: IN PARK (default):All of the doors
will unlock when the vehicle is shifted into PARK (P).
UNLOCK DRIVER: IN PARK:The driver’s door will be
unlocked when the vehicle is shifted into PARK (P).
UNLOCK DOORS: KEY OUT:All of the doors
will unlock when the key is taken out of the ignition.
UNLOCK DOORS: MANUALLY:The doors will not be
unlocked automatically.
To select a setting and move on to the next feature,
press the customization button while the desired setting
is displayed on the DIC.
SeeProgrammable Automatic Door Locks on page 2-9
for more information.
3-59

Lock Feedback
Press the customization button until LOCK FEEDBACK:
BOTH appears in the display. To select your preference
for the feedback you receive when locking the vehicle
with the Remote Keyless Entry (RKE) transmitter, press
the select button while LOCK FEEDBACK: BOTH is
displayed on the DIC. Pressing the select button
will scroll through the following settings:
LOCK FEEDBACK: BOTH (default):The parking
lamps will ash each time you press the button with the
lock symbol on the RKE transmitter and the horn will
chirp the second time you press the lock button.
LOCK FEEDBACK: OFF:There will be no feedback
when locking the vehicle.
LOCK FEEDBACK: LAMPS:The parking lamps will
ash each time you press the button with the lock
symbol on the RKE transmitter.
LOCK FEEDBACK: HORN:The horn will chirp the
second time you press the button with the lock symbol
on the RKE transmitter.
To select a setting and move on to the next feature,
press the customization button while the desired setting
is displayed on the DIC.
Unlock Feedback
Press the customization button until UNLOCK
FEEDBACK: LAMPS appears in the display. To select
your preference for the feedback you will receive when
unlocking the vehicle with the Remote Keyless Entry
(RKE) transmitter, press the select button while UNLOCK
FEEDBACK: LAMPS is displayed on the DIC. Pressing
the select button will scroll through the following settings:
UNLOCK FEEDBACK: LAMPS (default):The parking
lamps will ash each time you press the button with
the unlock symbol on the RKE transmitter.
UNLOCK FEEDBACK: HORN:The horn will chirp
the second time you press the button with the unlock
symbol on the RKE transmitter.
UNLOCK FEEDBACK: BOTH:The parking lamps will
ash each time you press the button with the unlock
symbol on the RKE transmitter and the horn will
chirp the second time you press the unlock button.
UNLOCK FEEDBACK: OFF:There will be no feedback
when unlocking the vehicle.
To select a setting and move on to the next feature,
press the customization button while the desired setting
is displayed on the DIC.
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