2005 GMC ENVOY XL brake light

During normal operation, the security light will turn off
approximately ve seconds after the key is turned
to RUN.
If the engine stalls and the security light ashes, wait
about 10 minutes until the light stops ashing before
trying to restart the engine. Remember to release
the key from START as soon as the engine starts.
If the engine does not start after three tries, the vehicle
needs service.
If the engine is running and the security light comes
on, you will be able to restart the engine if you turn the
engine off. However, your Passlock
®system is not
working properly and must be serviced by your dealer.
Your vehicle is not protected by Passlock
®at this
time. You may also want to check the fuse. SeeFuses
and Circuit Breakers on page 5-91. See your dealer
for service.
In an emergency, call the GM Roadside Assistance
Center. SeeRoadside Assistance Program on page 7-5.
Starting and Operating
Your Vehicle
New Vehicle Break-In
Notice:Your vehicle does not need an elaborate
break-in. But it will perform better in the long run
if you follow these guidelines:
Keep your speed at 55 mph (88 km/h) or less
for the rst 500 miles (805 km).
Do not drive at any one speed, fast or slow,
for the rst 500 miles (805 km). Do not make
full-throttle starts.
Avoid making hard stops for the rst 200 miles
(322 km) or so. During this time your new
brake linings are not yet broken in. Hard stops
with new linings can mean premature wear
and earlier replacement. Follow this breaking-in
guideline every time you get new brake
linings.
Do not tow a trailer during break-in. SeeTowing
a Trailer on page 4-55for more information.
2-19

Automatic Transfer Case
If your vehicle is equipped
with four-wheel drive, the
transfer case knob is
located to the right of the
steering wheel on the
instrument panel. Use this
knob to shift into and
out of four-wheel drive.
2HI (Two-Wheel High):This setting is for driving in
most street and highway situations. Your front axle is not
engaged in two-wheel drive. It also provides the best
fuel economy.
A4WD (Automatic Four-Wheel Drive):This setting is
ideal for use when road conditions are variable. When
driving your vehicle in automatic four-wheel drive, the
front axle is engaged, but the vehicle’s power is sent to
the rear wheels. When the vehicle senses a loss of
traction, the system will automatically engage four-wheel
drive. Driving in this mode results in slightly lower fuel
economy than 2HI.
4HI (Four-Wheel High):This setting should be used
when you need extra traction, such as on snowy or icy
roads or in most off-road situations. This setting also
engages your front axle to help drive your vehicle.4LO (Four-Wheel Low):This setting also engages
your 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 your vehicle to roll even if the
transmission is in PARK (P). 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 2-31.
NEUTRAL:Shift the vehicle’s transfer case to
NEUTRAL only when towing your vehicle. See
Recreational Vehicle Towing on page 4-50for 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.
2-28

Shifting into NEUTRAL
Before shifting the transfer case to NEUTRAL, rst
make sure the vehicle is parked so that it will not roll.
1. Set the parking brake.
2. Start the vehicle.
3. Put the transmission in NEUTRAL (N).
4. Shift the transfer case to 2HI.
5. Turn the transfer case knob all of the way past
four-wheel low and hold it there for a minimum
of 10 seconds. The neutral indicator light will
come on.
6. With the engine running, shift the transmission
to REVERSE (R) for one second, then shift
the transmission to DRIVE (D) for one second,
to ensure transfer case is in NEUTRAL.
7. Turn the engine off, by turning the key to
ACCESSORY.
8. Place the transmission shift lever in PARK (P).
9. Turn the ignition to LOCK.
Shifting Out of NEUTRAL
To shift the transfer case out of NEUTRAL, do the
following:
1. Set the parking brake and apply the regular
brake pedal.
2. Turn the ignition to RUN with the engine off.
3. Put the transmission in NEUTRAL (N).
4. Turn the transfer case knob to the desired
position (2 HI, 4HI, or A4WD).
5. After the transfer case has shifted out of NEUTRAL,
the indicator light will go out.
6. Release the parking brake.
7. You may start the engine and shift the transmission
to the desired position.
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. If the ignition is on, the brake
system warning light on the instrument panel cluster will
come on. SeeBrake System Warning Light on page 3-38.
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.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 4-55.
2-31

Instrument Panel Overview...............................3-4
Hazard Warning Flashers................................3-6
Other Warning Devices...................................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..........................................3-9
Rainsense™ Wipers.......................................3-9
Windshield Washer.......................................3-10
Headlamp Washer........................................3-11
Cruise Control..............................................3-11
Headlamps..................................................3-14
Headlamps on Reminder................................3-15
Daytime Running Lamps (DRL).......................3-15
Automatic Headlamp System..........................3-16
Fog Lamps..................................................3-17
Instrument Panel Brightness...........................3-17
Dome Lamps...............................................3-17
Dome Lamp Override....................................3-18
Entry Lighting...............................................3-18
Exit Lighting.................................................3-18
Reading Lamps............................................3-18Battery Run-Down Protection..........................3-19
Accessory Power Outlets...............................3-19
Ashtrays and Cigarette Lighter........................3-20
Climate Controls............................................3-20
Dual Climate Control System..........................3-20
Dual Automatic Climate Control System...........3-23
Outlet Adjustment.........................................3-27
Rear Climate Control System.........................3-28
Warning Lights, Gages, and Indicators............3-31
Instrument Panel Cluster................................3-32
Speedometer and Odometer...........................3-33
Trip Odometer..............................................3-33
Tachometer.................................................3-33
Safety Belt Reminder Light.............................3-34
Passenger Safety Belt Reminder Light.............3-34
Airbag Readiness Light..................................3-35
Passenger Airbag Status Indicator...................3-36
Charging System Light..................................3-37
Voltmeter Gage............................................3-38
Brake System Warning Light..........................3-38
Anti-Lock Brake System
Warning Light...........................................3-40
Engine Coolant Temperature Gage..................3-40
Malfunction Indicator Lamp.............................3-41
Section 3 Instrument Panel
3-1

The main components of your instrument panel are the following:
A. Exterior Lamp Control. SeeHeadlamps on
page 3-14. Dome Lamp Override Button. SeeDome
Lamp Override on page 3-18. Instrument Panel
Brightness Control. SeeInstrument Panel Brightness
on page 3-17. Fog Lamp Button (If Equipped).
SeeFog Lamps on page 3-17.
B. Air Outlets. SeeOutlet Adjustment on page 3-27.
C. Turn Signal/Multifunction Lever. SeeTurn
Signal/Multifunction Lever on page 3-7.
D. OnStar
®and Audio Steering Wheel Controls. See
Audio Steering Wheel Controls on page 3-126.
E. Instrument Panel Cluster. SeeInstrument Panel
Cluster on page 3-32.
F. Audio Steering Wheel Controls. SeeAudio Steering
Wheel Controls on page 3-126.
G. Ignition Switch. SeeIgnition Positions on page 2-20.
H. Audio System. SeeAudio System(s) on page 3-62.
I. Climate Controls. SeeDual Climate Control
System on page 3-20.
J. Hood Release. SeeHood Release on page 5-11.K. Driver Information Center (DIC) Steering Wheel
Controls. SeeDriver Information Center (DIC)
on page 3-49.
L. Transfer Case Controls. See “Automatic Transfer
Case” underFour-Wheel Drive on page 2-27.
Traction Assist Button. SeeTraction Assist
System (TAS) on page 4-8.
M. Shift Lever. SeeShifting Into Park (P) on page 2-32.
N. Lighter. SeeAshtrays and Cigarette Lighter on
page 3-20.
O. Accessory Power Outlets. SeeAccessory Power
Outlets on page 3-19.
P. Parking Brake. SeeParking Brake on page 2-31.
Q. Rear Window Washer/Wiper. See “Rear Window
Washer/Wiper” underWindshield Washer on
page 3-10.
R. Rear Window Defogger. See “Rear Window
Defogger” underDual Climate Control System on
page 3-20andDual Automatic Climate Control
System on page 3-23.
S. Glove Box. SeeGlove Box on page 2-53.
3-5

The cruise light on the
instrument panel cluster
will come on when
the cruise control is
engaged.
Resuming a Set Speed
Suppose you set your cruise control at a desired speed
and then you apply the brake. This, of course, shuts
off the cruise control. But you don’t need to reset it.
Once you’re going about 25 mph (40 km/h) or more, you
can move the cruise control switch briey from on to
resume/accelerate.
You’ll go right back up to your chosen speed and stay
there.
If you hold the switch at resume/accelerate, the vehicle
will keep going faster until you release the switch or
apply the brake. So unless you want to go faster, don’t
hold the switch at resume/accelerate.
Increasing Speed While Using Cruise
Control
There are two ways to go to a higher speed:
Use the accelerator pedal to get to the higher
speed. Press the button at the end of the lever,
then release the button and the accelerator pedal.
You’ll now cruise at the higher speed.
Move the cruise switch from on to
resume/accelerate. Hold it there until you get up to
the speed you want, and then release the switch.
To increase your speed in very small amounts,
move the switch briey to resume/accelerate.
Each time you do this, your vehicle will go about
1 mph (1.6 km/h) faster.
Reducing Speed While Using Cruise
Control
Press in the set button at the end of the lever until
you reach the lower speed you want, then release it.
Each time you do this, you’ll go about 1 mph (1.6 km/h)
slower.
Passing Another Vehicle While Using
Cruise Control
Use the accelerator pedal to increase your speed.
When you take your foot off the pedal, your vehicle will
slow down to the cruise control speed you set earlier.
3-13

Using Cruise Control on Hills
How well your cruise control will work on hills depends
upon your speed, load and the steepness of the hills.
When going up steep hills, you may want to step on the
accelerator pedal to maintain your speed. When going
downhill, you may have to brake or shift to a lower gear to
keep your speed down. Of course, applying the brake
takes you out of cruise control. Many drivers nd this to
be too much trouble and don’t use cruise control on
steep hills.
Ending Cruise Control
There are three ways to turn off the cruise control:
Step lightly on the brake pedal.
Move the cruise switch to off, or
Shift the transmission to NEUTRAL (N).
Erasing Speed Memory
When you turn off the cruise control or the ignition,
your cruise control set speed memory is erased.
Headlamps
Your exterior lamps
knob is located on your
instrument panel to the
left of the steering wheel.
c(Off):Turn the knob to this symbol and release it
to turn off the Daytime Running Lamps (DRL) and
the automatic headlamps. An indicator will illuminate
when the position is selected. This position is not
available for vehicles rst sold in Canada.
i(Automatic DRL/AHS):Turning the knob to
this symbol puts the system into automatic headlamp
mode. An indicator will illuminate when the position
is selected.
3-14