2004 PONTIAC GRAND AM air conditioning

Climate Controls
Climate Control System
With this system you can control the heating, cooling
and ventilation for your vehicle.
Operation
To change the current mode, select one of the following:
HMAX:This mode is used for maximum cooling. It
will recirculate much of the air inside your vehicle.
It maximizes your air conditioner’s performance and your
vehicle’s fuel economy. The air-conditioning compressor
will run automatically in this mode when it is needed
to help dry the air in the vehicle.
H(Vent):This mode directs air to the instrument
panel outlets.
)(Bi-Level):This mode directs half of the air to the
instrument panel outlets, then directs most of the
remaining air to the floor outlets with some air directed
at the side windows.
A(Floor):This mode directs most of the air to the
floor outlets with some air directed to the side windows.
The right knob can also be used to select defog or
defrost modes. Information on defogging and defrosting
can be found later in this section.
9(Fan):Turn the left knob clockwise or
counterclockwise to increase or decrease the fan speed.
Temperature Control:Turn the center knob clockwise
or counterclockwise to manually increase or decrease
the temperature inside your vehicle.
When it’s cold outside 0°F (−18°C) or lower, use the
engine coolant heater, if equipped, to provide warmer air
faster to your vehicle. An engine coolant heater warms
the coolant that the engine uses to provide heat to
warm the inside of your vehicle. For more information,
seeEngine Coolant Heater on page 2-22.
3-19

A/C (Air Conditioning):Press this button to turn the
air-conditioning system on or off. When A/C is pressed,
an indicator light above the button will come on to let
you know that air conditioning is activated. The fan knob
must be set to a speed for the air conditioning to
operate.
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.
For quick cool down on hot days:
1. Select the vent mode.
2. Select the highest fan speed.
3. Select A/C.
4. Select the recirculation mode.
5. Select the coolest temperature.
Using these settings together for long periods of time
may cause the air inside of your vehicle to become
to dry. To prevent this from happening, after the air in
your vehicle has cooled, turn the recirculation mode off.
The air-conditioning system removes moisture from
the air, so you may sometimes notice a small amount of
water dripping underneath your vehicle while idling or
after turning off the engine. This is normal.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. There are two modes to choose from to
clear fog or frost from your windshield. 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.
Turn the right knob clockwise or counterclockwise
to select defog or defrost mode.
-(Defog):This mode directs half of the air to the
windshield with most of the remaining air directed to the
floor outlets and some air directed at the side windows.
When you select this mode, the system turns off
recirculation automatically and runs the air-conditioning
compressor unless the outside temperature is at or
below freezing. The recirculation mode cannot be
selected while in the defog mode.
1FRONT (Defrost):This mode directs most of the
air to the windshield, with some air directed to the
floor outlets. In this mode, the system will automatically
turn off recirculation and run the air-conditioning
compressor, unless the outside temperature is at or
below freezing. Recirculation cannot be selected while
in the defrost mode. Do not drive the vehicle until all the
windows are clear.
3-20

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 Ination Pressure:The amount of air pressure in
a tire, measured in pounds per square inch (psi)
before a tire has built up heat from driving. SeeInflation
- Tire Pressure on page 5-58.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 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, seeLoading
Your Vehicle on page 4-35.
GAWR FRT:Gross Axle Weight Rating for the front
axle, seeLoading Your Vehicle on page 4-35.
GAWR RR:Gross Axle Weight Rating for the rear axle,
seeLoading Your Vehicle on page 4-35.
Intended Outboard Sidewall:The side of an
asymmetrical tire that must always face outward when
mounted on a vehicle.
Kilopascal (kPa):The metric unit for air pressure.
There are 6.9 kPa’s to one psi.
Light Truck (LT-Metric) Tire:A tire used on light duty
trucks and some multipurpose passenger vehicles.
5-56

Engine Compartment Fuse Block
Your vehicle may not be equipped with all the fuses and
features listed.
The engine compartment fuse block is located on the
driver’s side of the vehicle, near the battery.
Fuse Usage
1 Ignition Switch
2Right Electrical Center-Fog Lamps,
Radio, Body Function Control
Module, Interior Lamps
Fuse Usage
3Left Electrical Center-Stop Lamps,
Hazard Lamps, Body Function
Control Module, Cluster, Climate
Control System
4 Anti-Lock Brakes
5Left Electrical Center-Power Seats,
Power Mirrors, Door Locks, Trunk
Release, Audio Amplifier, Remote
Keyless Entry
6 Not Used
7 Ignition Switch
8 Cooling Fan #1
Relays Usage
9 Rear Defog
10 Not Used
11 Starter (V6 only)
12 Cooling Fan #1
13 HVAC Blower (Climate Control)
14 Cooling Fan #2
15 Cooling Fan
16 Air Conditioning Compressor
17 Not Used
18 Fuel Pump
5-90

Relays Usage
19 Automatic Headlamp System
20 Automatic Headlamp System
21 Horn
22 Daytime Running Lamps (DRL)
Fuses Usage
23–32 Spare Fuse Holder
33 Rear Defog
34Accessory Power Outlets, Cigarette
Lighter
35 Generator
36 Not Used
37Air Conditioning Compressor, Body
Function Control Module
38 Automatic Transaxle
39 Powertrain Control Module (PCM)
40 Anti-Lock Brakes (ABS)
41 Ignition System
42Back-Up Lamps, Brake Transaxle
Shift Interlock
Fuses Usage
43 Horn
44 PCM
45 Parking Lamps
46Climate Control System, Air
Conditioning
47Canister Vent Valve, Exhaust
Oxygen Sensors
48 Fuel Pump, Injectors
49 Not Used
50 Right Headlamp
51 Left Headlamp
52 Cooling Fan #2
53 HVAC Blower (Climate Control)
54 Crank (V6 only)
55 Cooling Fan #2 Ground
56 Fuse Puller for Mini Fuses
57 Not Used
5-91

Capacities and Specications
All capacities are approximate. When adding, be sure to fill to the appropriate level or as recommended in this manual.
Capacities
ApplicationCapacities
English Metric
Air Conditioning Refrigerant R134a
Use Refrigerant Oil, R134a Systems1.4 lbs. 0.6 kg
Automatic Transaxle
Complete Overhaul9.5 quarts 9.0 L
Cooling System
2.2L L4 † Engine
3400 V6 Engine8.6 quarts
13.6 quarts8.2 L
12.9 L
Engine Oil with Filter
2.2L L4 † Engine
3400 V6 Engine4.0 quarts
4.0 quarts3.8 L
3.8 L
Fuel Tank 14.1 gallons 53.4 L
5-92

Maintenance Footnotes
†The U.S. Environmental Protection Agency or the
California Air Resources Board has determined that the
failure to perform this maintenance item will not nullify
the emission warranty or limit recall liability prior to
the completion of the vehicle’s useful life. We, however,
urge that all recommended maintenance services be
performed at the indicated intervals and the
maintenance be recorded.
(a)Visually inspect brake lines and hoses for proper
hook-up, binding, leaks, cracks, chafing, etc. Inspect
disc brake pads for wear and rotors for surface
condition. Inspect drum brake linings for wear or cracks.
Inspect other brake parts, including drums, wheel
cylinders, calipers, parking brake, etc.
(b)Visually inspect front and rear suspension and
steering system for damaged, loose or missing parts or
signs of wear. Inspect power steering lines and
hoses for proper hook-up, binding, leaks, cracks,
chafing, etc.
(c)Visually inspect hoses and have them replaced if they
are cracked, swollen or deteriorated. Inspect all pipes,
fittings and clamps; replace with genuine GM parts as
needed. To help ensure proper operation, a pressure test
of the cooling system and pressure cap and cleaning the
outside of the radiator and air conditioning condenser is
recommended at least once a year.(d)Visually inspect wiper blades for wear or cracking.
Replace blade inserts that appear worn or damaged
or that streak or miss areas of the windshield.
(e)Make sure the safety belt reminder light and all your
belts, buckles, latch plates, retractors and anchorages
are working properly. Look for any other loose or
damaged safety belt system parts. If you see anything
that might keep a safety belt system from doing its
job, have it repaired. Have any torn or frayed safety belts
replaced. Also look for any opened or broken air bag
coverings, and have them repaired or replaced. (The air
bag system does not need regular maintenance.)
(f)Lubricate all key lock cylinders, door hinges and
latches, hood hinges and latches and trunk lid hinges
and latches. More frequent lubrication may be required
when exposed to a corrosive environment. Applying
silicone grease on weatherstrips with a clean cloth will
make them last longer, seal better and not stick or
squeak.
(g)Check system for interference or binding and for
damaged or missing parts. Replace parts as needed.
Replace any components that have high effort or
excessive wear. Do not lubricate accelerator or cruise
control cables.
6-7