2007 CHEVROLET EXPRESS CARGO VAN air conditioning

Instrument Panel Overview........................ 144
Hazard Warning Flashers.......................... 146
Other Warning Devices............................. 146
Horn.......................................................... 146
Tilt Wheel.................................................. 147
Turn Signal/Multifunction Lever.................. 147
Turn and Lane-Change Signals................. 148
Headlamp High/Low-Beam Changer.......... 149
Flash-to-Pass............................................ 149
Windshield Wipers..................................... 150
Windshield Washer.................................... 151
Cruise Control........................................... 151
Exterior Lamps.......................................... 155
Headlamps on Reminder........................... 156
Daytime Running Lamps (DRL)................. 156
Instrument Panel Brightness...................... 157
Dome Lamps............................................. 157
Dome Lamp Override................................ 157
Entry Lighting............................................ 158
Exit Lighting.............................................. 158
Reading Lamps......................................... 158Battery Run-Down Protection..................... 158
Accessory Power Outlet(s)........................ 158
Ashtray(s) and Cigarette Lighter................ 159
Climate Controls......................................... 160
Climate Control System............................. 160
Outlet Adjustment...................................... 162
Rear Heating System................................ 163
Rear Air Conditioning and Heating
System.................................................. 164
Warning Lights, Gages, and Indicators..... 166
Instrument Panel Cluster........................... 167
Speedometer and Odometer...................... 168
Trip Odometer........................................... 168
Safety Belt Reminder Light........................ 168
Passenger Safety Belt Reminder Light....... 169
Airbag Readiness Light............................. 169
Airbag Off Light......................................... 170
Passenger Airbag Status Indicator............. 172
Charging System Light.............................. 174
Voltmeter Gage......................................... 175
Section 3 Instrument Panel
141

If your vehicle has air conditioning, your heating/air
conditioning controls will look like this:
On hot days, open the windows to let hot inside
air escape; then close them. This helps to reduce
the time it takes for your vehicle to cool down.
It also helps the system to operate more efficiently.
A/C (Air Conditioning):This setting will begin to
cool and dehumidify the air inside of your vehicle.
MAX A/C (Maximum Air Conditioning):Turn the
right knob to MAX A/C for maximum cooling.
This setting cools the air the fastest, by
recirculating the inside air.
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 is
used properly. There are two modes to clear fog or
frost from your windshield and side windows.Use the defog mode to clear the windows of fog or
moisture and warm the passengers. Use the defrost
mode to remove fog or frost from the windshield
more quickly. For best results, clear all snow and
ice from the windshield before defrosting.
Turn the knob on the right of the climate control
panel to select the defog or defrost mode.
-(Defog):With this setting, the outside air
comes out of both the floor and defroster outlets.
Adjust the temperature knob for warmer or
cooler air. The air conditioning compressor may
operate in this setting to dehumidify the air.
1(Defrost):This setting operates the defroster.
Most of the air comes out near the windshield,
with some going to the floor outlets and front side
windows. The air conditioning compressor may
operate in this setting to dehumidify the air.
The defog setting is useful for cold weather with a
large number of passengers or very humid
conditions to help keep the windshield clear. Use
defrost to remove fog or ice from the windshield
quickly in extremely cold conditions. The
temperature knob should be in the red area and
the fan control toward high. Do not drive the
vehicle until all the windows are clear.
161

Rear Air Conditioning and
Heating System
Your vehicle may have a rear heating and
air-conditioning system. This system regulates the
temperature, the fan speed and the air delivery for
the rear-seat passengers only. It also works with
the main climate-control system in your vehicle.
Use this control panel when you would like to
maintain a separate temperature setting. Adjust the
direction of the airflow or adjust the fan speed
for the rear seat passenger(s).If your vehicle has a 135 inch (343 cm) wheelbase,
a rear control panel for this system is located in
the second row behind the driver in the rear
of your vehicle. A rear seat passenger can use
this control panel to personally adjust the
temperature, the direction of the airflow and the
fan speed for the rear seating area.
The fan knob located on the front climate control
panel must be turned to REAR CNTL to allow a rear
seat passenger to use the control panel in the rear
seating area. Performing this action disables the
front control panel. To return control to this panel,
move the fan knob out of REAR CNTL.
Front Climate Control Panel
Rear Climate Control Panel
164

Turn the center knob clockwise or counterclockwise
to change the direction of the airflow in the rear
seating area.
To change the current mode, select one of the
following:
H(Vent):Use this mode to direct air to the
upper outlets, with a little air directed to the
floor outlets.
2(Floor):Use this mode to direct most of the
air to the floor outlets.
9(Fan):Turn the left knob clockwise or
counterclockwise to HIGH, MED (Medium) or
LOW to increase or decrease the fan speed in the
rear-seating area. Turn the knob to OFF to turn
off the fan.Temperature Control:To increase or decrease
the temperature for the rear of the vehicle, turn the
right knob located on the climate-control panel.
The air-conditioning system on the main climate
control panel must be turned on to direct cooled air
to the rear of the vehicle. If it is not on, then the
temperature in the rear of the vehicle will remain at
cabin temperature.
Be sure to keep the area under the front seats
clear of any objects so that the air inside of your
vehicle can circulate effectively.
For information on how to use the main climate
control system, seeClimate Control System
on page 160. For information on ventilation, see
Outlet Adjustment on page 162.
165

Tire Terminology and Denitions
Air Pressure:The amount of air inside the tire
pressing outward on each square inch of the
tire. Air pressure is expressed in pounds
per square inch (psi) or kilopascal (kPa).
Accessory Weight:This means the combined
weight of optional accessories. Some examples of
optional accessories are, automatic transmission,
power steering, power brakes, power windows,
power seats, and air conditioning.
Aspect Ratio:The relationship of a tire’s height
to its width.
Belt:A rubber coated layer of cords that is
located between the plies and the tread. Cords
may be made from steel or other reinforcing
materials.
Bead:The tire bead contains steel wires wrapped
by steel cords that hold the tire onto the rim.
Bias Ply Tire:A pneumatic tire in which the plies
are laid at alternate angles less than 90 degrees
to the centerline of the tread.Cold Tire Pressure:The amount of air pressure in
a tire, measured in pounds per square inch (psi) or
kilopascals (kPa) before a tire has built up heat
from driving. SeeInation - Tire Pressure on
page 354.
Curb Weight:This means the weight of a motor
vehicle with standard and optional equipment
including the maximum capacity of fuel, oil, and
coolant, but without passengers and cargo.
DOT Markings:A code molded into the sidewall
of a tire signifying that the tire is in compliance
with the U.S. Department of Transportation (DOT)
motor vehicle safety standards. The DOT code
includes the Tire Identification Number (TIN),
an alphanumeric designator which can also identify
the tire manufacturer, production plant, brand,
and date of production.
GVWR:Gross Vehicle Weight Rating. See
Loading Your Vehicle on page 261.
GAWR FRT:Gross Axle Weight Rating for the
front axle. SeeLoading Your Vehicle on page 261.
351

Fuse Usage
5 Back-up Lamps Trailer Wiring
6 Ignition 0
7 Stoplamp
8 Rear Defogger/Heated Mirror
9Right Daytime Running
Lamp/Turn Signal
10Left Daytime Running
Lamp/Turn Signal
11 Truck Body Control Module 4
12 Fuel Pump
13 Trailer
14 Hazard Flashers
15 Horn
16 Truck Body Control Module 3
17 Trailer Stop/Turn Signal
18 Truck Body Control Module 2
19 Truck Body Control Module
20 Remote Function Actuator
21 Engine 2 (Gas), Spare (Diesel)
22 Ignition EFuse Usage
23 Engine 1
24Truck Body Control Module
Ignition 1
25 Spare (Gas), Fuel Heater (Diesel)
26 Inside Rearview Mirror
27 Crankcase
28Brake Transmission Shift
Interlock System
29 Auxiliary Power Outlets
30 Cigarette Lighter
31 Instrument Panel Cluster
32 Air Conditioning
33Spare (Gas), Engine Control
Module (Diesel)
34Canister Vent Solenoid (Gas),
Rear Fog Lamps (Diesel)
35 SPARE
36Brake Transmission Shift
Interlock, Vehicle Back-Up
37 Airbag
396

Fuse Usage
38Powertrain Control Module Ignition 1
(Gas), Engine Control Module,
Transmission Control Module,
Glow Plug Control Module Ignition 1
(Diesel)
39Oxygen Sensor B (Gas),
Spare (Diesel)
40Oxygen Sensor A (Gas),
Spare (Diesel)
41 Windshield Wipers
42 Right Headlamp - Low Beam
43 Left Headlamp - Low Beam
44 Left Headlamp - High Beam
45 Right Headlamp - High Beam
46Truck Body Controller- Accessory
(Gas), Truck Body Controller,
Transmission Control Module
Accessory (Diesel)
47 Front Windshield Wiper
48Anti-lock Brakes, Vehicle Stability
Enhancement System
49 Ignition A
50 TrailerFuse Usage
51 Climate Control Blower
52 Ignition B
63Spare (Gas), Engine Control
Module Actuator (Diesel)
64 Spare
Relays Usage
53 Windshield Wiper
54 Air Conditioning
55Spare (Gas), Rear Fog
Lamps (Diesel)
56 Headlamp - High Beam
57 Fuel Pump
58 Headlamp - Low Beam
59 Horn
SPARE (G),
ECM (D)Spare (Gas), Engine
Control Module (Diesel)
STRTR Starter
Circuit Breaker Usage
PWR SEAT Power Seat
397

Capacities and Specications
The following approximate capacities are given in English and metric conversions. SeeRecommended
Fluids and Lubricants on page 415for more information. When adding, be sure to fill to the appropriate
level or as recommended in this manual.
See refrigerant charge label under the hood for charge capacity information and requirements.
ApplicationCapacities
English Metric
Air Conditioning Refrigerant R134aFor the air conditioning system refrigerant
charge amount, see the refrigerant
caution label located under the hood.
See your dealer for more information.
Cooling System
4300 V6 11.0 qt 10.4 L
4800 V8, 5300 V8, 5300 V8 Flexible Fuel 13.4 qt 12.7 L
6000 V8 14.8 qt 14.0 L
Cooling System with Rear Heat
4300 V6 14.0 qt 13.2 L
4800 V8, 5300 V8, 5300 V8 Flexible Fuel 16.4 qt 15.5 L
6000 V8 17.8 qt 17.0 L
398