2004 GMC ENVOY XUV brake light

{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. See
Parking Brake on
page 2-35
.
NEUTRAL:Shift the vehicle's transfer case to
NEUTRAL only when towing your vehicle. See
Recreational Vehicle Towing on page 4-45for more
information.
An indicator light in the knob will show you which
position the transfer case is in. The indicator lights will
come on brie¯y when you turn on the ignition and
one will stay on. 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 remain illuminated 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. See
Service Four-Wheel
Drive Warning Light on page 3-44for further information.
Shifting into 4HI or A4WD
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 illuminated
when the shift is complete.
Shifting into 2HI
Turn the knob to 2HI. This can be done at any speed
unless you are shifting out of 4LO.
Shifting into 4LO
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 remain
illuminated before shifting your 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.
2-33

Shifting Out of 4LO
To shift from 4LO to 4HI, A4WD 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 remain illuminated 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).
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 4LO
and hold it there for a minimum of 10 seconds.
The neutral indicator light will come on.6. Shift the transmission to REVERSE (R) for one
second, then shift the transmission to DRIVE (D)
for one second.
7. Place the transmission shift lever in PARK (P).
8. Turn the ignition to LOCK.
9. Release the parking brake prior to towing.
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. Start the vehicle with the transmission in PARK (P).
3. Turn the transfer case knob to the desired shift
position (2HI, 4HI or A4WD).
4. Put the transmission in NEUTRAL (N).
5. Release the parking brake.
6. After the transfer case has shifted out of NEUTRAL,
the indicator light will go out. Shift the transmission
lever to the desired position.
A re-engagement sound is normal when shifting out of
NEUTRAL.
2-34

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 on the center console. If the ignition is on,
the brake system warning light will come on.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,
see
Towing a Trailer on page 4-56. That section
shows what to do ®rst to keep the trailer from moving.
2-35

Instrument Panel Overview...............................3-4
Other Warning Devices...................................3-5
Horn.............................................................3-5
Tilt Wheel.....................................................3-6
Turn Signal/Multifunction Lever.........................3-6
Exterior Lamps.............................................3-14
Interior Lamps..............................................3-16
Accessory Power Outlets...............................3-19
Ashtrays and Cigarette Lighter........................3-19
Climate Controls............................................3-20
Dual Climate Control System..........................3-20
Dual Automatic Climate Control System...........3-23
Rear Climate Control System.........................3-28
Climate Controls Personalization.....................3-29
Warning Lights, Gages, and Indicators............3-30
Instrument Panel Cluster................................3-31
Speedometer and Odometer...........................3-32
Tachometer.................................................3-33
Safety Belt Reminder Light.............................3-33Air Bag Readiness Light................................3-34
Charging System Light..................................3-35
Voltmeter Gage............................................3-35
Brake System Warning Light..........................3-36
Anti-Lock Brake System Warning Light.............3-37
Engine Coolant Temperature Gage..................3-37
Malfunction Indicator Lamp.............................3-38
Oil Pressure Gage........................................3-41
Change Engine Oil Light................................3-42
Security Light...............................................3-42
Cruise Control Light......................................3-43
Reduced Engine Power Light.........................3-43
Service Four-Wheel Drive Warning Light..........3-44
Check Gages Warning Light...........................3-44
Fuel Gage...................................................3-45
Low Fuel Warning Light.................................3-45
Driver Information Center (DIC).......................3-46
DIC Operation and Displays...........................3-46
DIC Warnings and Messages.........................3-56
Section 3 Instrument Panel
3-1

The main components of your instrument panel are the
following:
A. Exterior Lamp Controls. See
Exterior Lamps on
page 3-14.
B. Air Outlets. See ªOutlet Adjustmentº under
Dual
Climate Control System on page 3-20.
C. Turn Signal/Multifunction Lever. See
Turn
Signal/Multifunction Lever on page 3-6.
D. OnStar and Audio Steering Wheel Controls. See
Audio Steering Wheel Controls on page 3-118.
E. Instrument Panel Cluster. See
Instrument Panel
Cluster on page 3-31.
F. Audio Steering Wheel Controls. See
Audio Steering
Wheel Controls on page 3-118.
G. Ignition Switch. See
Ignition Positions on page 2-24.
H. Audio System. See
Audio System(s) on page 3-61.
I. Climate Controls. See
Dual Climate Control
System on page 3-20.
J. Hood Release. See
Hood Release on page 5-11.
K. Driver Information Center (DIC) Steering Wheel
Controls. See
Driver Information Center (DIC) on
page 3-46.
L. Transfer Case Controls. See ªAutomatic Transfer
Caseº under
Four-Wheel Drive on page 2-31.M. Shift Lever. See
Shifting Into Park (P) on page 2-36.
N. Lighter. See
Ashtrays and Cigarette Lighter on
page 3-19.
O. Accessory Power Outlets. See
Accessory Power
Outlets on page 3-19.
P. Parking Brake. See
Parking Brake on page 2-35.
Q. Rear Window Washer/Wiper. See ªRear Window
Washer/Wiperº under
Turn Signal/Multifunction Lever
on page 3-6.
R. Rear Window Defogger. See ªRear Window
Defoggerº under
Dual Climate Control System on
page 3-20.
S. Glove Box. See
Glove Box on page 2-51.
Other Warning Devices
If you carry re¯ective triangles, you can set one 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.
3-5

Setting Cruise Control
1. Move the cruise control switch to on.
2. Get up to the speed you want.
3. Press the set button at the end of the lever and
release it.
4. Take your foot off the accelerator pedal.
The accelerator pedal will not go down.
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 brie¯y 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 brie¯y to resume/accelerate. Each
time you do this, your vehicle will go about
1 mph (1.6 km/h) faster.
3-12

Reducing Speed While Using Cruise
Control
Press 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.
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.
3-13

There is a delay in the transition between the daytime
and nighttime operation of the Daytime Running
Lamps (DRL) and the automatic headlamp systems, so
that driving under bridges or bright overhead street
lights does not affect the system. The DRL and
automatic headlamp system will only be affected when
the light sensor sees a change in lighting lasting
longer than the delay.
If you start your vehicle in a dark garage, the automatic
headlamp system will come on immediately. Once
you leave the garage, it will take about one minute for
the automatic headlamp system to change to DRL if it is
light outside. During that delay, your instrument panel
cluster may not be as bright as usual. Make sure
your instrument panel brightness control is in the full
bright position.
To idle your vehicle with the automatic headlamp
system off, set the parking brake while the ignition is off.
Then start your vehicle. The automatic headlamp
system will stay off until you release the parking brake,
shift out of park or turn the exterior lamp control to
the off position as described in ªExterior Lampsº listed
previously.
Lamps On Reminder
A reminder tone will sound when your headlamps or
parking lamps are manually turned on, the driver's door
is open and your ignition is in LOCK or ACCESSORY.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
daytime running lamps are required on all vehicles
®rst sold in Canada.
The DRL system will make your 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 your headlamps will be on.
The taillamps, sidemarker and other lamps won't be
on. The instrument panel won't be lit up either.
When it begins to get dark, the headlamps will
automatically switch from DRL to the regular headlamps.
3-15