engine PONTIAC BONNEVILLE 2003 Repair Manual

Section 5 Service and Appearance Care
Service ........................................................ 5.3
Doing Your Own Service Work
......................... 5.3
Adding Equipment to the Outside
of Your
Vehicle
...................................................... 5.4
Fuel ................................................................ 5.5
Gasoline Octane
............................................ 5.5
Gasoline Specifications
.................................... 5.6
California Fuel
............................................... 5.6
Additives
....................................................... 5.6
Fuels in Foreign Countries
............................ 5.7
Filling Your Tank
........................... .......... 5.8
Filling
a Portable Fuel Container ..... .... 5.11
the Hood ............................. .... 5.12
Hood Release
.............................. ........ 5.13
Engine Compartment Overview ...................... -5-1 4
Checking Things Under
Engine Oil ................................................... 5.15
Supercharger Oil .......................................... 5.21
Engine Air Cleaner/t-llter
................................ 5-22
Automatic Transaxle Fluid .............................. 5.23
Engine Coolant
............................................. 5.26
Radiator Pressure Cap
.................................. 5.29
Engine Overheating
....................................... 5.29
Cooling System
............................................ 5.32
Power Steering Fluid
..................................... 5.40
Windshield Washer Fluid
................................ 5.40
Brakes
........................................................ 5.42
Battery
........................................................ 5-44
Jump Starting
............................................... 5-46
Headlamp Aiming .......................... ...... 5.52
Bulb Replacement .................................. -5-56
Halogen Bulbs
.............................................. 5.56
Headlamps
.................................................. 5.56
Front Turn Signal and Parking Lamps
.............. 5-57
Taillamps, Turn Signal, Stoplamps and
Back-up Lamps
......................................... 5-59
fiepiacement
Euibs 3.w - ^^ .......................................
5- I

Fuel
The 8th digit of your vehicle identification number (VIN)
shows the code letter or number that identifies your
engine. You will find the VIN at the top left of the
instrument panel. See
Vehicle ldentification Number
(VIN) on page
5-90.
Gasoline Octane
If your vehicle has the 3800 V6 engine (VIN Code K),
use regular unleaded gasoline with a posted octane
of 87 or higher. If the octane is less than 87, you
may get a heavy knocking noise when you drive.
If this occurs, use a gasoline rated at 87 octane or
higer as
soon as possible. Otherwise, you might
damage your engine.
A little pinging noise when you
accelerate or drive uphill is considered normal. This does not
indicate a problem exists or that a
higher-octane fuel is necessary.
If you are using
87 octane or higher-octane fuel and you hear heavy
knocking, your engine needs service.
If your vehicle has the 3800 Supercharged V6 engine
(VIN Code
I), use only premium unleaded gasoline with
a posted octane of
91 or higher. In an emergency,
you may be able to use a lower octane
- as low
as 87
- if heavy knocking does not occur. Refill
your tank with premium fuel as soon as possible.
Otherwise, you might damage your engine.
If you are
using
91 octane or higher-octane fuel and you hear
heavy knocking, your engine needs service.
5-5

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

Checking Things Under
the Hood
I
An electric fan under the hood can start up
and injure you even when the engine
is not
running. Keep hands, clothing and tools away
from any underhood electric fan. Things that
b n can get on hot engine parts
and start a fire. These include liquids like fuel,
oil, coolant, brake fluid, windshield washer and
other fluids, and plastic or rubber. You or
others could be burned. Be careful not to drop
or
spill things that will burn onto a hot engine.
5-1 2

Engine Compartment Overview
When you open the hood on the 3800 (L36) engine (3800 Supercharged (L67) engine similar), here’s
what you
will see:
5-1 4

A. Engine Compartment Fuse Block
B. Windshield Washer Fluid Reservoir
C. Engine Coolant Recovery Tank
D. Radiator Pressure Cap
E. Power Steering Fluid Reservoir
F. Engine Oil Dipstick
G. Engine Oil Fill Cap
H. Automatic Transaxle Fluid Dipstick
I. Brake Master Cylinder
J. Engine Air Cleaner/Filter
Engine Oil
WCHECK
OIL LEVEL
If the OIL LEVEL LOW
message appears
on the
DIC, or the CHECK
OIL LEVEL light appears
on the instrument cluster, it
means
YOU need to
check your engine oil level
right away.
For more information, see
Check Oil Level Light on
page
3-50 or DIG Warnings and Messages on
page 3-60.
You should check your engine oil level regularly; this is
an added reminder.
5-1 5

Checking Engine Oil
It’s a good idea to check your engine oil every time you
get fuel. In order to get an accurate reading, the oil
must be warm and the vehicle must be on level ground. Turn
off the engine
and give the oil several minutes to
drain back into the oil pan.
If you don’t, the oil
dipstick might not show the actual level.
Pull out the dipstick and clean it with a paper towel or
cloth, then push
it back in all the way. Remove it again,
keeping the tip down, and check the level.
The engine oil dipstick is located behind the engine
cooling fans and in front of the engine
oil fill cap. The top
of the dipstick is a round yellow loop. See
Engine
Comparfment Overview on page 5-74 for more
information on location.
I I
5-1 6

When to Add Engine Oil
If the oil is at or below the cross-hatched area at the tip
of the dipstick, then you’ll need to add at least one
quart
of oil. But you must use the right kind. This part
explains what kind
of oil to use. For engine oil crankcase
capacity, see
Capacities and Specifications on
page 5- 100.
Notice: Don’t add too much oil. If your engine has
so much oil that the oil level gets above the
cross-hatched area that shows the proper operating
range, your engine could
be damaged.
1
7
The engine oil fill cap is
located near the engine oil
dipstick. See
Engine
Compartment Overview on
page
5-14 for more
information on location.
Be sure to
fill it enough to put the level somewhere in
the proper operating range in the cross-hatched
area. Push the dipstick
all the way back in when
you’re through.
5-1 7

What Kind of Engine Oil to Use
Oils recommended for your vehicle can be identified by
looking for the starburst symbol.
This symbol indicates that the oil has been certified by
the American Petroleum Institute (API).
Do not use
any oil which does not carry this starburst symbol.
II If you choose to perform
the engine oil change
service yourself, be sure
the oil you use has
the starburst symbol on
the front of the oil
container.
If you have your
oil changed for you, be
sure the oil put into
your engine is American You
should also use the proper viscosity oil for your
vehicle, as shown in the viscosity chart.
SAE 1OW-30 is the viscosity grade recommended for
your vehicle. However, you can use SAE 5W-30
if
it’s going to be colder than 60°F (16°C) before your next
oil change. When it is very cold, colder than
0°F
(-18°C) you should use an SAE 5W-30 oil. These
numbers on an oil container show its viscosity,
or thickness.
Do not use other viscosity grade oils, such
as SAE 1OW-40 or SAE 20W-50 under any conditions.
I I Petroleum Institute certified
for gasoline engines.
5-1
8

RECOMMENDED SAE VISCOSITY GRADE ENGINE OILS
FOR BEST FUEL ECONOMY AND COLD STARTING, SELECT THE LOWEST
SAE VISCOSITY GRADE
OIL FOR THE EXPECTED TEMPERATURE RANGE.
HOT
WEATHER
+ 80 ~
+ 60
."I
7 "C
t 38
f 21
t 16
+4
-7
18
COLD
WEATHER
~ 1'
/.
SAE~W-XI
LOOK
FOR THIS
SYMBOL
.- SAE 1OW-30 PREFERRED above 0°F (-1WC)
DO NOT USE SAE 2OW-50 OR ANY OTHER GRADE OIL NOT REGOMMEMBED
Notice: Use only engine oil with the American
Petroleum Institute Certified For Gasoline Engines
starburst symbol. Failure to use the recommended
oil can result in engine damage not covered by
your warranty.
GM Goodwrench@ oil meets all the requirements for
your vehicle.
If you are in an area of extreme cold, where the
temperature falls below -20°F (-29°C) it is
recommended that you use either an
SAE 5W-30
synthetic oil or an SAE OW-30 oil. Both will provide
easier cold starting and better protection for your engine
at extremely
low temperatures.
Engine Oil Additives
Don't add anything to your oil. The recommended oils
with the starburst symbol are
all you will need for
good performance and engine protection.
5-1 9