2003 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:
f;’ (MAX): 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.
2 (Vent): This mode directs air to the instrument
panel outlets.
tf;’ (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.
@ (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.
@ (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,
see Engine
Coolant Heater on page 2-22.
3-1 8

A/C (Air Conditioning): Press this button to turn the
air-conditioning system on or off. When
NC 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 NC.
4. Select the coolest temperature.
Using these settings together for long periods of time
may cause the air inside of your vehicle
to become
your vehicle has cooled, turn the recirculation mode off
tc
dry. Tc prevent
this frcl?? hsppenin& s!?er the 2i!- i!7
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
Gf! the engine. This is nCx??ml.
Defogging and Defrosting
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.
+3 (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.
To help clear the side windows quickly while using air
conditioning, do the following:
1. Select the bi-level mode.
2. Select the highest fan speed.
3. Select NC.
4. Select the temperature.
3-1 9

9 FRONT (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.
To help clear the windshield quickly, do the following:
1. Select the defrost mode.
2. Select the highest temperature.
3. Select the highest fan speed.
Your vehicle is equipped with side window defogger
outlets located on the outside of the side instrument
panel outlets. To help clear the side windows quickly, do
the following:
1. Select the floor mode.
2. Select the highest temperature.
3. Select the highest fan speed.
Rear Window Defogger
The rear window defogger uses a warming grid to
remove fog of frost from the rear window.
REAR: Press this button to turn the rear window
defogger on or
off. An indicator light above the
button will come on to let you know that the rear window
defogger is activated. Be sure to clear as much snow
from the rear window as possible.
The rear window defogger will turn
off approximately
10 minutes after the button is pressed. If turned on
again, the defogger will only run for approximately
five minutes before turning
off. The defogger can also
be turned
off by pressing the button again or by turning
off the engine.
Notice: Don’t use anything sharp on the inside of
the rear window.
If you do, you could cut or damage
the warming grid, and the repairs wouldn’t be
covered by your warranty.
Do not attach a temporary
vehicle license, tape, a decal or anything similar
to the defogger grid.
3-20

Relays 16
17
18
19
20
21 22
Fuses 23-32
33
34
35
36
37
3e
39
40 Usage
Air Conditioning Compressor
Not Used
Fuel Pump
Automatic Headlamp System
Automatic Headlamp System
Horn
Daytime Running Lamps (DRL)
Usage
Spare Fuse Holder
Rear Defog
Accessory Power Outlets,
Cigarette Lighter
Generator
Not Used
Air Conditioning Compressor, Body
Function Control Module
Powertrain Control Module (PCM)
Anti-Lock Brakes (ABS)
At Itnmatir- TrQncQvlo , l,..."l, IULIV I I UI I"cIt\I"
Fuses
41
42
43
44
45 46
47
48 49 50
51 52
53
54
55 56
57 Usage
Ignition
System
Back-up Lamps, Brake Transaxle
Shift Interlock
Horn PCM Parking Lamps
Climate Control System,
Air Conditioning
Canister Vent Valve, Exhaust
Oxygen Sensors
Fuel Pump, injectors
Not Used
Right Headlamp
Left Headlamp
Cooling Fan
#2
HVAC Blower (Climate Control)
Crank
Coolina Fan #2 Ground
Fuse Puller for Mini Fuses
Not Used
5-85

Capacities and Specifications
All capacities are approximate. When adding, be sure to fill to the appropriate level or as recommended in
this manual.
Capacities
I Capacities
Application
0.6 kg 1.4
Ibs.
Metric
English
Air Conditioning Refrigerant R134a
Use Refrigerant Oil, R134a Systems
Automatic Transaxle
Complete Overhaul
9.0 L
9.5 quarts
Cooling System
2.2L
L4 t Engine
3400 V6 Engine 8.6 quarts
13.6 quarts 8.2
L
12.9 L
Engine Oil with Filter
2.2L L4
t Engine
3400 V6 Engine 5.0 quarts
4.5 quarts 4.8 L
4.3 L
Fuel Tank
53.4 L 14.1
gallons
5-86

Engine Cooling System Inspection
Inspect the hoses and have them replaced if they
are cracked, swollen or deteriorated. Inspect all pipes,
fittings and clamps; replace as needed. Clean the
outside of the radiator and air conditioning condenser.
To help ensure proper operation, a pressure test of
the cooling system and pressure cap is recommended
at least once a year.
Throttle System Inspection
Inspect the throttle 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
and cruise control cables.
Brake System Inspection
Inspect the complete system. 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 other brake parts,
including calipers, parking brake, etc. You may need to
have your brakes inspected more often
if your driving
habits or conditions result in frequent braking.
6-1
4