2005 CHEVROLET OPTRA fuel cap

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) or
kiloPascals (kPa) before a tire has built up heat from
driving. SeeInflation - Tire Pressure on page 5-51.
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 (DOT) 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 4-28.GAWR FRT:Gross Axle Weight Rating for the front
axle, seeLoading Your Vehicle on page 4-28.
GAWR RR:Gross Axle Weight Rating for the rear axle,
seeLoading Your Vehicle on page 4-28.
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.
Light Truck (LT-Metric) Tire:A tire used on light duty
trucks and some multipurpose passenger vehicles.
Load Index:An assigned number ranging from
1 to 279 that corresponds to the load carrying capacity
of a tire.
Maximum Ination Pressure:The maximum air
pressure to which a cold tire may be inflated. The
maximum air pressure is molded onto the sidewall.
Maximum Load Rating:The load rating for a tire at the
maximum permissible inflation pressure for that tire.
Maximum Loaded Vehicle Weight:The sum of curb
weight; accessory weight; vehicle capacity weight;
and production options weight.
Normal Occupant Weight:The number of occupants a
vehicle is designed to seat multiplied by 150 lbs (68 kg).
SeeLoading Your Vehicle on page 4-28.
5-49

Ination - Tire Pressure
Tires need the correct amount of air pressure to
operate effectively.
Notice:Do not let anyone tell you that
under-ination or over-ination is all right. It is not.
If your tires do not have enough air (under-ination),
you can get the following:
Too much exing
Too much heat
Tire overloading
Premature or irregular wear
Poor handling
Reduced fuel economy
If your tires have too much air (over-ination), you
can get the following:
Unusual wear
Poor handling
Rough ride
Needless damage from road hazardsA vehicle specific tire and loading information label is
attached to your vehicle. This label shows your vehicle’s
original equipment tires and the correct inflation
pressures for your tires when they are cold. The
recommended cold tire inflation pressure, shown on the
label, is the minimum amount of air pressure needed to
support your vehicle’s maximum load carrying capacity.
For additional information regarding how much weight
your vehicle can carry, and an example of the tire
and loading information label, seeLoading Your Vehicle
on page 4-28. How you load your vehicle affects
vehicle handling and ride comfort, never load your
vehicle with more weight than it was designed to carry.
When to Check
Check your tires once a month or more. Do not forget to
check the compact spare tire. For additional information
regarding the compact spare tire, seeCompact
Spare Tire on page 5-66.
How to Check
Use a good quality pocket-type gage to check tire
pressure. You cannot tell if your tires are properly
inflated simply by looking at them. Radial tires may look
properly inflated even when they are under-inflated.
Check the tire’s inflation pressure when the tires
are cold. Cold means your vehicle has been sitting
for at least three hours or driven no more than
1 mile (1.6 km).
5-51

Capacities and Specications
The following approximate capacities are given in English and metric conversions. SeePart D: Recommended Fluids
and Lubricants on page 6-24for more information.
ApplicationCapacities
English Metric
Air Conditioning Refrigerant R134a 1.41 lbs 0.64 kg
Cooling System 7.9 quarts 7.5 L
Engine Oil with Filter 4.2 quarts 4.0 L
Fuel Tank 14.5 gallons 55.0 L
Transaxle, Automatic 7.3 quarts 6.9 L
Transaxle, Manual 1.9 quarts 1.8 L
Wheel Nut Torque 81 lb ft 110Y
All capacities are approximate. When adding, be sure to fill to the appropriate level, as recommended in this
manual. Recheck fluid level after filling.
Engine Specications
Engine VIN Code Transaxle Spark Plug Gap
2.0L L4 (L34) ZAutomatic and
Manual0.039 inch (1.0mm)
5-82

90,000 Miles (150 000 km)
❑Change engine oil and filter (or every 3 months,
whichever occurs first).An Emission Control Service.
❑Replace passenger compartment air filter. If you drive
regularly under dusty conditions, the filter may
require replacement more often.
❑Replace engine air cleaner filter. SeeEngine Air
Cleaner/Filter on page 5-17for more information.
An Emission Control Service.
❑Rotate tires. SeeTire Inspection and Rotation on
page 5-52for proper rotation pattern and additional
information.(See footnote +.)
❑Replace spark plugs.An Emission Control Service.
❑Replace fuel filter.An Emission Control Service. (See
footnote †.)
❑Inspect drive belt(s).
❑Inspect timing belt.
❑Drain, flush and refill cooling system.This service can
be complex; you should have your dealer perform
this service. SeeEngine Coolant on page 5-20
for what to use. Inspect hoses. Clean radiator,
condenser, pressure cap and neck. Pressure test the
cooling system and pressure cap.An Emission
Control Service.❑Inspect EVAP canister, vapor lines and solenoid
valve filter.An Emission Control Service. (See
footnote †.)
❑Inspect PCV system.An Emission Control Service.
(See footnote †.)
❑Change brake/clutch fluid (or every 24 months,
whichever occurs first).
93,000 Miles (155 000 km)
❑Change engine oil and filter (or every 3 months,
whichever occurs first).An Emission Control Service.
96,000 Miles (160 000 km)
❑Change engine oil and filter (or every 3 months,
whichever occurs first).An Emission Control Service.
❑Rotate tires. SeeTire Inspection and Rotation
on page 5-52for proper rotation pattern and
additional information.(See footnote +.)
99,000 Miles (165 000 km)
❑Change engine oil and filter (or every 3 months,
whichever occurs first).An Emission Control Service.
6-12

90,000 Miles (150 000 km)
❑Change engine oil and filter (or every 12 months,
whichever occurs first).An Emission Control
Service.
❑Replace passenger compartment air filter. If you
drive regularly under dusty conditions, the filter
may require replacement more often.
❑Replace engine air cleaner filter. SeeEngine Air
Cleaner/Filter on page 5-17for more information.
An Emission Control Service.
❑Rotate tires. SeeTire Inspection and Rotation on
page 5-52for proper rotation pattern and additional
information.(See footnote +.)
❑Replace spark plugs.An Emission Control Service.
❑Replace fuel filter.An Emission Control Service. (See
footnote †.)
❑Inspect drive belt(s).
❑Inspect timing belt.❑Drain, flush and refill cooling system. This service
can be complex; you should have your dealer
perform this service. SeeEngine Coolant on
page 5-20for what to use. Inspect hoses. Clean
radiator, condenser, pressure cap and neck. Pressure
test the cooling system and pressure cap.An
Emission Control Service.
❑Inspect EVAP canister, vapor lines and solenoid
valve filter.An Emission Control Service. (See
footnote †.)
❑Inspect PCV system.An Emission Control Service.
(See footnote †.)
❑Change brake/clutch fluid (or every 24 months,
whichever occurs first).
97,500 Miles (162 500 km)
❑Change engine oil and filter (or every 12 months,
whichever occurs first).An Emission Control
Service.
❑Rotate tires. SeeTire Inspection and Rotation on
page 5-52for proper rotation pattern and additional
information.(See footnote +.)
6-17

Exhaust System Inspection
Inspect the complete exhaust system. Inspect the body
near the exhaust system. Look for broken, damaged,
missing or out-of-position parts as well as open seams,
holes, loose connections or other conditions which
could cause a heat build-up in the floor pan or could let
exhaust fumes into the vehicle. SeeEngine Exhaust
on page 2-31.
Fuel System Inspection
Inspect the complete fuel system for damage or leaks.
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.
6-23

Automatic Transaxle
Fluid..........................................................5-19
Operation...................................................2-21
B
Backglass Antenna..........................................3-54
Battery..........................................................5-33
Before Leaving on a Long Trip.........................4-20
Brake
Anti-Lock Brake System (ABS)........................ 4-6
Emergencies................................................ 4-8
Parking......................................................2-27
System Inspection.......................................6-23
System Warning Light..................................3-32
Brakes..........................................................5-30
Braking........................................................... 4-5
Braking in Emergencies..................................... 4-8
Break-In, New Vehicle.....................................2-18
Bulb Replacement...........................................5-38
Center High-Mounted Stoplamp (CHMSL)........5-42
Fog Lamps.................................................5-40
Front Turn Signal and Parking Lamps.............5-39
Halogen Bulbs............................................5-38
Headlamp Aiming........................................5-37
Headlamps.................................................5-38Bulb Replacement (cont.)
Replacement Bulbs......................................5-43
Sidemarker Lamps.......................................5-41
Taillamps, Turn Signal, Stoplamps and
Back-up Lamps........................................5-42
Turn Signal Lamps......................................5-40
Buying New Tires...........................................5-54
C
California Fuel.................................................. 5-5
Canadian Owners................................................ ii
Capacities and Specifications............................5-82
Carbon Monoxide...........2-11, 2-13, 2-31, 4-23, 4-35
Care of
Your CD Player...........................................3-53
Your CDs ...................................................3-53
Center High-Mounted Stoplamp (CHMSL)...........5-42
Center Rear Passenger Position, Safety Belts.....1-24
Chains, Tire...................................................5-57
Charging System Light....................................3-32
Check
Engine Light...............................................3-36
Checking Things Under the Hood......................5-10
Chemical Paint Spotting...................................5-73
2