CADILLAC CTS 2004 1.G Owners Manual

Some gasolines that are not reformulated for low
emissions may contain an octane-enhancing additive
called methylcyclopentadienyl manganese tricarbonyl
(MMT); ask the attendant where you buy gasoline
whether the fuel contains MMT. General Motors does
not recommend the use of such gasolines. Fuels
containing MMT can reduce the life of spark plugs and
the performance of the emission control system may
be affected. The malfunction indicator lamp may turn on.
If this occurs, return to your authorized GM dealer
for service.
Fuels in Foreign Countries
If you plan on driving in another country outside the
United States or Canada, the proper fuel may be hard
to nd. Never use leaded gasoline or any other fuel
not recommended in the previous text on fuel. Costly
repairs caused by use of improper fuel would not
be covered by your warranty.
To check the fuel availability, ask an auto club, or
contact a major oil company that does business in the
country where you will be driving.
Filling Your Tank
{CAUTION:
Fuel vapor burns violently and a fuel re can
cause bad injuries. To help avoid injuries to you
and others, read and follow all the instructions
on the pump island. Turn off your engine when
you are refueling. Do not smoke if you are near
fuel or refueling your vehicle. Keep sparks,
ames and smoking materials away from fuel.
Do not leave the fuel pump unattended when
refueling your vehicle — this is against the law
in some places. Keep children away from the
fuel pump; never let children pump fuel.
5-7

The tethered fuel cap is
behind a hinged door on
the passenger’s side of
the vehicle.
To open the fuel door, push inward on the forward edge
of the fuel door until the rear edge can be pulled outward.While refueling, hang the
fuel cap by the tether from
the hook on the fuel door.
To remove the fuel cap, turn it slowly to the left
(counterclockwise). The fuel cap has a spring in it;
if you let go of the cap too soon, it will spring back to
the right.
5-8

{CAUTION:
If you spill fuel and then something ignites it,
you could be badly burned. Fuel can spray out
on you if you open the fuel cap too quickly.
This spray can happen if your tank is nearly
full, and is more likely in hot weather. Open
the fuel cap slowly and wait for any hiss noise
to stop. Then unscrew the cap all the way.
Be careful not to spill fuel. Don’t top off or overll your
tank, and wait a few seconds after you’ve nished
pumping before you remove the nozzle. Clean fuel from
painted surfaces as soon as possible. SeeCleaning
the Outside of Your Vehicle on page 5-95.
When you put the fuel cap back on, turn it to the right
(clockwise) until you hear a clicking sound. Make sure
you fully install the cap. The diagnostic system can
determine if the fuel cap has been left off or improperly
installed. This would allow fuel to evaporate into the
atmosphere. SeeMalfunction Indicator Lamp on
page 3-47.The Check Gas Cap message will appear on the Driver
Information Center (DIC) display if the fuel cap is not
reinstalled properly. SeeDIC Warnings and Messages
on page 3-70for more information.
{CAUTION:
If a re starts while you are refueling, do not
remove the nozzle. Shut off the ow of fuel by
shutting off the pump or by notifying the
station attendant. Leave the area immediately.
Notice:If you need a new fuel cap, be sure to get the
right type. Your dealer can get one for you. If you get
the wrong type, it may not t properly. This may
cause your malfunction indicator lamp to light and
may damage your fuel tank and emissions system.
SeeMalfunction Indicator Lamp on page 3-47.
5-9

Filling a Portable Fuel Container
{CAUTION:
Never ll 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:
Dispense gasoline only into approved
containers.
Do not ll a container while it is inside a
vehicle, in a vehicle’s trunk, pickup bed or
on any surface other than the ground.
Bring the ll nozzle in contact with the
inside of the ll opening before operating
the nozzle. Contact should be maintained
until the lling is complete.
Do not smoke while pumping gasoline.
Checking Things Under
the Hood
{CAUTION:
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.
{CAUTION:
Things that burn can get on hot engine parts
and start a re. These include liquids like fuel,
oil, coolant, brake uid, windshield washer and
other uids, 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.
5-10

Hood Release
To open the hood, do the following:
1. Pull the hood release lever inside the vehicle.
It is located on the lower left side of the
instrument panel.2. Then go to the front of the vehicle and nd the
secondary hood release lever. The lever is
located under the front edge of the grille near the
center. Move the release lever to the side and raise
the hood.
Before closing the hood, be sure all the ller caps are
on properly. Then pull the hood down and close it rmly.
CTS shown, CTS-Vsimilar
5-11

Engine Compartment Overview
When you open the hood on the 3.2L V6, you will see the following:
5-12

A. Battery. SeeBattery on page 5-45.
B. Underhood Fuse Block. SeeFuses and Circuit
Breakers on page 5-100.
C. Windshield Washer Fluid Reservoir. SeeWindshield
Washer Fluid on page 5-41.
D. Passenger Compartment Air Filter. SeePassenger
Compartment Air Filter on page 3-35.
E. Power Steering Fluid Reservoir. SeePower Steering
Fluid on page 5-40.
F. Engine Oil Fill Cap. SeeEngine Oil on page 5-18.
G. Engine Oil Dipstick. SeeEngine Oil on page 5-18.H. Engine Coolant Heater Cord. SeeEngine Coolant
Heater on page 2-25.
I. Brake Master Cylinder Reservoir. SeeBrakes on
page 5-42.
J. Engine Air Cleaner/Filter. SeeEngine Air
Cleaner/Filter on page 5-24.
K. Hydraulic Clutch Reservoir (Manual Transmission).
SeeHydraulic Clutch (Manual Transmission) on
page 5-28.
L. Engine Coolant Surge Tank and Pressure Cap.
SeeCoolant Surge Tank Pressure Cap on page 5-31
andCooling System on page 5-34.
5-13

When you open the hood on the 3.6L HFV6, you will see the following:
5-14

A. Underhood Fuse Block. SeeFuses and Circuit
Breakers on page 5-100.
B. Windshield Washer Fluid Reservoir. SeeWindshield
Washer Fluid on page 5-41.
C. Battery. SeeBattery on page 5-45.
D. Power Steering Fluid Reservoir. SeePower Steering
Fluid on page 5-40.
E. Engine Oil Fill Cap. SeeEngine Oil on page 5-18.F. Engine Oil Dipstick. SeeEngine Oil on page 5-18.
G. Brake Master Cylinder Reservoir. SeeBrakes
on page 5-42.
H. Engine Coolant Surge Tank and Pressure Cap.
SeeCoolant Surge Tank Pressure Cap on page 5-31
andCooling System on page 5-34.
I. Engine Air Cleaner/Filter. SeeEngine Air
Cleaner/Filter on page 5-24.
5-15

When you open the hood on the 5.7L V8 CTS-V, you will see the following:
5-16