Climate control GMC ENVOY 2004 User Guide

Dual Automatic Climate Control
System
Your vehicle may have the dual automatic climate
control system. With this system you can control the
heating, cooling and ventilation for your vehicle.
When your vehicle is rst started and the climate control
system is on, or if the climate control system has
been turned on, the display will show the driver’s
temperature setting for ve seconds. Then it will show
the outside temperature.
OFF:Press this button to turn off the entire climate
control system. Outside air will still enter the vehicle, and
will be directed to the oor. Press the AUTO button,
the mode button, the fan arrows, or either temperature
knob to turn the system on.MODE:Press this button to manually select the air
delivery mode to the oor, instrument panel, or
windshield outlets. The system will stay in the selected
mode until the mode button is pressed again or the
AUTO button is pressed.
Driver’s Side Temperature Knob:Turn this knob
clockwise or counterclockwise to manually raise or lower
the temperature on the driver’s side of the vehicle.
The display will show the temperature setting decreasing
or increasing and the word DRIVER will appear on
the display. This knob can also adjust the passenger’s
side temperature setting simultaneously if the two
zones are linked. The words DRIVER and PASS will
then appear on the display.
Passenger’s Side Temperature Knob:Turn this knob
clockwise or counterclockwise to manually raise or
lower the temperature on the passenger’s side of the
vehicle. The display will show the temperature
setting decreasing or increasing and the word PASS will
appear on the display. The passenger’s temperature
setting can be set to match and link to the driver’s
temperature setting by pressing and holding the AUTO
button for three seconds. Now, by adjusting the
driver’s side temperature setting, the passenger’s side
temperature setting will follow and both DRIVER
and PASS will appear on the display. The passenger’s
side temperature setting also resets and relinks to
the driver’s side temperature setting if the vehicle has
been off for more than two hours.
3-24

6(Floor):This mode directs most of the air to the
oor outlets. Some air also comes out of the defroster
and side window outlets. The recirculation button cannot
be selected in oor mode.
h(Recirculation):Press this button to turn
recirculation mode on or off. When this button is
pressed, an indicator light in the button will also come
on to let you know that it is activated. Recirculation
mode is used to recirculate the air inside of your vehicle.
Use this mode to help prevent outside odors and/or
dust from entering your vehicle or to help cool the air
inside of your vehicle more quickly. Recirculation
mode can be used with vent and bi-level modes, but it
cannot be used with oor, defog or defrost modes.
If the weather is cold and damp, the system may
cause the windows to fog while using recirculation
mode. If the windows do start to fog, select defog or
defrost mode.
#A/C (Air Conditioning):Press this button to
manually turn the air conditioning system on or off.
When the system is on, the system will automatically
begin to cool and dehumidify the air inside of your
vehicle.
If you select air conditioning off while in front defrost or
defog mode, the air conditioning off symbol will ash
to let you know this option is not allowed.You may notice a slight change in engine performance
when the air-conditioning compressor shuts off and
turns on again. This is normal.
A/C OFF (Air Conditioning Off):When you turn the
air conditioning off, the words A/C OFF will appear
on the display. When the air conditioning is selected or
in AUTO mode, the system will run the air conditioning
automatically.
Defogging and Defrosting
Fog on the inside of windows is a result of high humidity
(moisture) condensing on the cool window glass. This
can be minimized if the climate control system is
used properly. You can use either defog or front defrost
to clear fog or frost from your windshield.
-(Defog):Use this setting to clear the windows of fog
or moisture. This setting will deliver air to the oor
and windshield outlets.
0(Front Defrost):Press the front defrost button to
clear the windshield and side windows of frost or
fog quickly. The system will automatically control the fan
speed if you select defrost from AUTO mode. If the
outside temperature is 40°F (4°C) or warmer, your air
conditioning compressor will automatically run to
help dehumidify the air and dry the windshield. Do not
drive the vehicle until all the windows are clear.
3-26

Rear Climate Control System
Your Envoy has one of the following rear climate control
systems. With any of these systems, the rear climate
controls will be disabled when the front climate control
system is in defrost. This occurs to provide maximum
airow to clear the windshield.
The temperature of the air coming through the rear
outlets is determined by the front passenger’s
temperature setting. Press the PWR button to turn the
rear climate controls on and off. Use the mode knob
to change the direction of airow (upper, bi-level or oor)
to the rear seat area.If your vehicle has the rear seat audio system, the lower
buttons are used to adjust the rear seat climate
controls. The temperature of the air coming through the
rear outlets is determined by the front passenger’s
temperature setting.
If the front climate control is on and not in defrost mode,
the rear climate control can be enabled by pressing the
lower power button (center button) on the control face.
If the front is off or is in defrost mode, the rear climate
control will ash “OFF” if the power button is pressed,
indicating the function is unavailable at this point.
The fan speed is controlled by the fan speed toggle
button. The mode button, on the right, controls where
the air is vented.
3-28

Turn the knobs on the control panel to choose a fan
speed, temperature and direction of airow.
Selecting panel mode will deliver air to the four headliner
outlets. Selecting bi-level mode will deliver warmer air
to the third seat oor outlet and cooler air to the
headliner outlets. Selecting oor mode will deliver air to
the oor outlet located in the third seat area.Press the buttons at the bottom of the audio control
panel to adjust the fan speed, mode and temperature for
the rear passengers. The selections will be shown on
the display.
Press the rear fan control button with the arrow pointing
right to turn the rear climate control on. Toggle this
button to adjust the air ow speed. To turn the
rear system off, toggle the left arrow until the display
turns off. Envoy XL
Envoy XL
3-30

Outlet Adjustment
Your vehicle may have rear seat outlets that can be
used to adjust the airow toward either seating area, the
oor or upward. Move the control in the center of
each outlet in any direction to direct airow.
Climate Controls Personalization
If your vehicle is equipped with the Driver Information
Center (DIC), you can store and recall the climate
control settings for temperature, air delivery mode and
fan speed for two different drivers. The personal
choice settings recalled are determined by the
transmitter used to enter the vehicle. After the button
with the unlock symbol on a remote keyless entry
transmitter is pressed, the climate control will adjust to
the last settings of the identied driver. The settings
can also be changed by pressing one of the memory
buttons (1 or 2) located on the driver’s door. When
adjustments are made, the new settings are
automatically saved for the driver.
3-31

Driving with a Trailer
{CAUTION:
If you have a rear-most window open and you
pull a trailer with your vehicle, carbon
monoxide (CO) could come into your vehicle.
You can not see or smell CO. It can cause
unconsciousness or death. SeeEngine
Exhaust on page 2-34. To maximize your safety
when towing a trailer:
Have your exhaust system inspected for
leaks, and make necessary repairs before
starting on your trip.
Keep the rear-most windows closed.
If exhaust does come into your vehicle
through a window in the rear or another
opening, drive with your front, main
heating or cooling system on and with the
fan on any speed. This will bring fresh,
outside air into your vehicle. Do not use
the climate control setting for maximum air
because it only recirculates the air inside
your vehicle. See Climate Control System
in the Index.Towing a trailer requires a certain amount of experience.
Before setting out for the open road, you’ll want to get
to know your rig. Acquaint yourself with the feel of
handling and braking with the added weight of the trailer.
And always keep in mind that the vehicle you are
driving is now a good deal longer and not nearly as
responsive as your vehicle is by itself.
Before you start, check all trailer hitch parts and and
attachments, safety chains, electrical connection, lamps,
tires and mirror adjustment. If the trailer has electric
brakes, start your vehicle and trailer moving and then
apply the trailer brake controller by hand to be sure
the brakes are working. This lets you check your
electrical connection at the same time.
During your trip, check occasionally to be sure that the
load is secure, and that the lamps and any trailer
brakes are still working.
4-61

Treadwear
The treadwear grade is a comparative rating based on
the wear rate of the tire when tested under controlled
conditions on a specied government test course.
For example, a tire graded 150 would wear one and
a half (1.5) times as well on the government course as
a tire graded 100. The relative performance of tires
depends upon the actual conditions of their use,
however, and may depart signicantly from the norm
due to variations in driving habits, service practices and
differences in road characteristics and climate.
Traction – AA, A, B, C
The traction grades, from highest to lowest, are AA, A,
B, and C. Those grades represent the tire’s ability
to stop on wet pavement as measured under controlled
conditions on specied government test surfaces of
asphalt and concrete. A tire marked C may have poor
traction performance. Warning: The traction grade
assigned to this tire is based on straight-ahead braking
traction tests, and does not include acceleration,
cornering, hydroplaning, or peak traction characteristics.
Temperature – A, B, C
The temperature grades are A (the highest), B, and C,
representing the tire’s resistance to the generation
of heat and its ability to dissipate heat when tested
under controlled conditions on a specied indoor
laboratory test wheel. Sustained high temperature can
cause the material of the tire to degenerate and
reduce tire life, and excessive temperature can lead to
sudden tire failure. The grade C corresponds to a
level of performance which all passenger car tires must
meet under the Federal Motor Vehicle Safety Standard
No. 109. Grades B and A represent higher levels of
performance on the laboratory test wheel than the
minimum required by law.
Warning: The temperature grade for this tire is
established for a tire that is properly inated and not
overloaded. Excessive speed, underination, or
excessive loading, either separately or in combination,
can cause heat buildup and possible tire failure.
5-70

Fuses Usage
01 Right Door Control Module
02 Left Door Control Module
03 Liftgate Module 2
04 Truck Body Controller 3
05 Rear Fog Lamps
06 Blank
07 Truck Body Controller 2
08 Power Seats
09 Rear Wiper
10 Driver Door Module
11 Amplier
12 Passenger Door ModuleFuses Usage
13 Rear Climate Controls
14 Left Rear Parking Lamps
15 Blank
16Vehicle Center High-Mounted
Stop Lamp
17 Right Rear Parking Lamps
18 Locks
19Liftgate Module/Driver Seat
Module
20 Sunroof
21 Lock
23 Blank
5-110

Fuses Usage
01 Right Door Control Module
02 Left Door Control Module
03 Liftgate Module 2
04 Truck Body Controller 3
05 Rear Fog Lamps
06 Blank
07 Truck Body Controller 2
08 Power Seats
09 Rear Wiper
10 Driver Door Module
11 Amplier
12 Passenger Door Module
13 Rear Climate Controls
14 Left Rear Parking LampsFuses Usage
15 Blank
16Vehicle Center High-Mounted
Stop Lamp
17 Right Rear Parking Lamps
18 Locks
19Liftgate Module/Driver Seat
Module
20 Vent Window
21 Lock
22 Retained Accessory Power
23 Blank
24 Unlock
25 Blank
26 Blank
5-113

Climate Control System
Climate Controls Personalization....................3-31
Dual..........................................................3-20
Dual Automatic............................................3-24
Rear..........................................................3-28
Compass Calibration.......................................2-36
Compass Operation.........................................2-36
Compass Variance..........................................2-37
Content Theft-Deferrent....................................2-17
Control of a Vehicle.......................................... 4-5
Convenience Net............................................2-50
Coolant
Engine Temperature Gage............................3-39
Heater, Engine............................................2-23
Cooling System..............................................5-30
Cruise Control................................................3-12
Cruise Control Light........................................3-46
CURB VIEW ACTIVATED.................................3-62
Current and Past Model Order Forms................7-13
Customer Assistance Information
Courtesy Transportation.................................. 7-7
Customer Assistance for Text
Telephone (TTY) Users............................... 7-4
Customer Assistance Offices........................... 7-4
Customer Satisfaction Procedure..................... 7-2
GM Mobility Program for Persons
with Disabilities.......................................... 7-5
Reporting Safety Defects to General Motors....7-11Customer Assistance Information (cont.)
Reporting Safety Defects to
the Canadian Government.........................7-11
Reporting Safety Defects to
the United States Government...................7-11
Roadside Assistance Program......................... 7-6
Service Publications Ordering Information........7-12
D
Daytime Running Lamps (DRL).........................3-16
Defensive Driving............................................. 4-2
Defogging and Defrosting.........................3-22, 3-26
Delayed Locking............................................... 2-9
Dinghy Towing................................................4-45
Doing Your Own Service Work........................... 5-3
Dolly Towing..................................................4-47
Dome Lamp Override......................................3-18
Dome Lamps.................................................3-18
Door
Delayed Locking........................................... 2-9
Locks.......................................................... 2-8
Power Door Locks......................................... 2-9
Programmable Automatic Door Locks.............2-10
Rear Door Security Locks.............................2-13
4