2003 PONTIAC BONNEVILLE fuel pump

On vehicles with a DIC, the CHECK GAGES LOW
FUEL message will be displayed when the fuel gage
reads
in the yellow band. See DIC Warnings and
Messages on page
3-60 for more information.
Here are some things that owners ask about. None of
these show a problem with your fuel gage:
At the service station, the gas pump shuts off
before the gage reads full.
It takes a little more (or less) fuel to fill up than the
gage indicated. For example, the gage may have
indicated the tank was half full, but it actually took a
little more (or less) than half the tank’s capacity
to
fill the tank.
Boost Gage
Vehicles equipped with the supercharged engine have
this boost gage that
indicates vacuum during
light to moderate
throttle and boost under
heavier throttle.
The gage displays the air pressure level going into the
engine’s combustion chamber.
The gage is automatically centered at zero every time
the ignition key is turned to
ON. Actual vacuum or boost
is displayed from this zero point. Changes in ambient
pressure, such as driving in mountains and changing
weather, will slightly change the zero reading.
3-54

Gasoline Specifications
It is recommended that gasoline meet specifications
which were developed by the American Automobile
Manufacturers Association and endorsed by the
Canadian Vehicle Manufacturers Association for better
vehicle performance and engine protection. Gasoline
meeting these specifications could provide improved
driveability and emission control system performance
compared to other gasoline.
Canada Only
In Canada, look for the
“Auto Makers’ Choice”
label on the pump.
California Fuel
If your vehicle is certified to meet California Emission
Standards (see the underhood emission control label),
it is designed to operate on fuels that meet California
specifications.
If this fuel is not available in states
adopting California emissions standards, your vehicle
will operate satisfactorily on fuels meeting federal specifications, but emission control system performance may be affected. The malfunction indicator lamp may
turn on (see
Malfunction lndicator Lamp on page 3-46 )
and your vehicle may fail a smog-check test. If this
occurs, return to your authorized GM dealer for
diagnosis. If it is determined that the condition is caused
by the type of fuel used, repairs may not be covered
by your warranty.
Additives
To provide cleaner air, all gasolines in the United States
are now required to contain additives that will help
prevent engine and fuel system deposits from forming,
allowing your emission control system to work
properly. You should not have to add anything to your
fuel. Gasolines containing oxygenates, such as ethers and ethanol, and reformulated gasolines may be
available in your area to contribute to clean air.
General Motors recommends that you use these
gasolines, particularly if they comply with the
specifications described earlier.
5-6

Filling a Portable Fuel Container
Never fill a portable fuel container while it is in
your vehicle. Static electricity discharge from
the container can ignite the gasoline vapor.
You can be badly burned and your vehicle
damaged if this occurs.
To help avoid injury to
you and others:
containers.
Dispense gasoline only into approved
CAUTION: (Continued)
Do not fill a coni while it is inside a
vehicle, in a vehicle’s trunk, pickup bed or
on any surface other than the ground.
Bring the fill nozzle in contact with the
inside of the fill opening before operating
the nozzle. Contact should be maintained
until the filling is complete.
Don’t smoke while pumping gasoline.
5-1 1

Fuses
1
2
Usage
Fuel Pump
Heater, Ventilation, Air Conditioning
Blower
Assembly Line Diagnostic Link
Not Used
Compact Disc (CD) Driver Door Module
Not Used
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10
11
12
13
14
15
16
17
18
19
20
21
22
23 24
25
26
07 LI
28
29
30
31
32
33
Usage
Lamps Park Right
Ventilation Solenoid
Ignition 1
Lamps Park Left Interior Lamp Dimmer Module
Satellite Digital Radio
Heated Seat Left Front
Not Used Rear Door Modules
Stoplamps PARK (P)
/ REVERSE (R)
Audio Retained Accessory Power
Not Used
Not Used Passenger Door Module
Body
Not Used
Ignition Switch
Instrument Panel
Heated Seat Right Front
iiof: Used
Heating, Ventilation, Air Conditioning
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5-97

Fuses
34
35
36 37
38
Relays
39
40
41 42
43
Usage
Ignition 3 Rear
Antilock Brake System
Turn SignaVHazard HVAC Battery
Dash Integration Module
Usage
Fuel Pump
Parking Lamps
Ignition 1 Rear Fog Lamps
Not Used
Relays
44
45 46
47
48
49
50
51
52
53
54
55
Usage
Park Brake
Reverse Lamps Retained Accessory Power
Fuel Tank Door Lock
Not Used Ignition
3
Fuel Tank Door Release
Interior Lamps
Trunk Release Front Courtesy Lamps
Not Used
Electronic Level Control Compressor
5-98