
Downloaded from www.Manualslib.com manuals search engine Tires
If you plan to use your vehicle in countries where speeds over 75 mph (120 kmlh) are allowed. see Item 3 on page 5-12.
IMPORTANT FACTS YOU SHOULD KNOW ABOUT FUEL
ECONOMY AND HOW TO IMPROVE IT
How you drive . where you drive and when you drive an affect how many
mileslkilometers you can get from a gallon/liter of fuel. The careful attention you give your vehicle as far as maintenance and repairs 'are concerned 'will also help fuel economy. .
Fuel Selection
Use only unle8;ded gasoline meeting the octane ratings given under "Fuel Requirements" in "Starting and Operating," Section 2 of this manual. Unleaded
gasoline must be used for the, emission control system to operate properly. Its use will also reduce spark plug fouling , exhaust system corrosio n and engine oil
deterioration . Using leaded gasoline can damage the emission control system and could result in IO$S of emission warranty coverage.
"Jackrabbit" Starts
You can save fuel (and prolong engine and tire life) by avoiding fast starts away
from lights and stop Signs. . '
Stop-And·Start Driving
Frequent stops and starts while driving cut down on your miJesper gaUon
(kilometers per liter). Plan even your short shopping trips to take advantage of
through streets to avoid traffic lights. Pace your driving like the expert drivers
to avoid unneeded stops _and braking.
Sudden Stops
Sudden stops can also waste fuel; instead of moving the vehicle , the energy of fuel
is wasted as, heal in braking. Ene'rg'y in the form of fuel is also needed to accelerate
back to driving speed~
Excessive Idling
An idling engine uses fuel, too. If you're faced with more than a minute wait, and
you're not i,n traffic, it may be better to tum, off the engine and start again later.
Lubricants
A well~lubricated vehicle means less friction between moving parts. See the
Maintenan ce Schedule folder for
the_ proper lubrication intervals.
Air Cleane.r
Your vehicle receives its power from a mixture of gasoline and air. The air enters
the engine through the air cleaner. A-dirty air cleaner element lessens engine
performance and can waste
fuel. So, it's important to -replace the air cleaner
element (filter) at required intervals. (See the Maintenance Schedule -folder.)
2-4

Downloaded from www.Manualslib.com manuals search engine On all C-4 cars, a "CHECK ENGINE" light on the instrument panel is
designed to come on during engine starting , to let you know the bulb is working. (The light will stay on a short time after the engine starts.) If the light comes on while driving, service to the emission control system
may be required. See your Chevrolet dealer' as soon as possible for an inspection of the system. Continued driving without having the C-4 System serviced _ could eventually
cause damage
to the emission control system . It could also affect fuel
e conomy and drivabili -ty.
ENGINE OIL AND FILTER RECOMMENDATIONS • Engine oils' are labeled on 'the containers with various API (American
Petroleum Institute) designations 6f quality. Use engine oils that are labeled
5E or SE/CC. Do not use oils labeled only SA, 5B, 5C, SD, CA, CB, CC or CD; _or oils with the combination label SE and CD (SE/CD). Higher
quality oils labeled SF will be introduced soon (late 1979, or 1980). These SF oils are preferred and should be used when available.
• The oil and filter change intervals for your engine are based on the use of SE-quality or SF-quality oils and ,high- quality filters such as AC oil filters. Using oils other than SE-quality or SF-quality oils, or oil change intervals
longer than recommended. could reduce -engine life and might affect your
warranty.
• Your engine was filled with a high·quality engine oil when it was built. You do ,not have to change this oil before the suggested change period.
•
If your normal driving does nQt include one or more of the four "severe service" conditions listed below. change the oil every 7,500 miles (12 000 ' kilometers) or 12 months, whichever comes first. Change the oillilter at the
first oil change. then every second oil change, if mileage (7,500 miles or 12
000. kilom~ters) determines .w ,hen you change the oil. If _time (12 months)
determines when you change the oil, change the filter with every oil change.
• Change the oil and oil filter every 3,000 miles (4 800 kilometers) , or three
months if you often drive under one or more of these 'severe service·,~.
conditions: • Driving in dusty areas
• Towing ,3 trailer
• Frequent idling or idling for long periods
• Driving 4 miles (6 kilometers) br'less in freezing weather,o~other short trips in cold weather, where the engine does not thoTough ,ly warm up.
• Change the oil and oil filter as soon as -possible after driving in a dust
storm.
Oil Viscosity
Engine oil viscosity (thickness) has an effect on fuel economy. Lowec viscosity
engine oils can provide increased , fuel " economy; however, higher temperature
weather conditions require higher viscosity engine oils for satisf~ctory lubrication.
To. get the best fuel economy with your-1980 Chevrolet, -iou should use -,, ' .
fuel. 'saviiJ.&:_engine oil ohhe_ proper viscosity. These oils call_ be found. in serviCe
stations and other retail stores. They are-identified by words such as: "Energy Saving," "Conserves Gasoline," "Gas Saving," "Gasoline Saving," '''Friction
Reducing," "Improved Gasoline Mileage" or "Fuel Saving."
The following chart lists the engine ' oil viscosities recommended for the
temperature range you expect before the next oil change. For lemperalures above ,_18°C (O"F),SAE lOW-30 is -the preferred viscosity grade. Ircold-weather starting
problems
are encountered at temperatures below -lSoC (
5-3

Downloaded from www.Manualslib.com manuals search engine NOTICE: You cannot read the correct fluid level if you have just driven the car for a long time at high speed, in city traffic in hot weather, or if the car has been pulling a trailer. Wait. until the fluid has cooled down (about 30 minutes).
Remove the dipstick located on the driver's side forward of the cowl. Carefully
touch the wet end of the dipstick to find out if the fluid is cool, warm or hot. Wipe
it clean and push it back in until the cap seats. Pull
out the dipstick and read the
fluid level.
• If it felt cool or warm (about room temperature), the level should be
between the dimples above the "Full" mark.
• If it was too hot to hold. the level should be at or in the hatched area.
Add just enough DEXRON-®n fluid to fill the transaxle. It takes only 0.5 liter
(one pint)to raise the level from "Add" to "Full" with a hot transaxle.
Do not overfill the transaxle. Overfilling can cause foaming and loss of fluid, which
could result in transaxle damage.
Automatic Transaxle Drain Intervals
Change the transmission fluid and change the filter (or clean the screen) as
outlined in Section
A of the Maintenance Schedule folder.
ELECTRIC FAN
CAUTION: Keep hands, tools, and clothing away from the angine cooling fan to help prevent personal injury. This fan is electric and can come on whether or not the engine is running. The fan can start automatically in response to a heat sensor when the ignition is in the "Run" position.
ENGINE COOLING SYSTEM
The coolant recovery system is standard. The coolant in the radiator expands with
heat, and the overflow collects in the recovery tank. When the system cools down,
the coolant
is drawn back into the radiator.
The cooling system was filled at the factory with a quality coolant that meets
GM Specification 1899-M. The cooling system is designed to use coolant (a mixture
of water and ethylene glycol antifreeze) rather than plain water. The coolant
solution should be used year round. It has many advantages, such as:
• provides freezing protection down to _37°C, (-34°P)
•
provides boiling protection up to 128QC, (262°P)
•
protects against rust and corrosion in the cooling system,
• maintains the proper engine temperature for efficient operation and emission
control, and
• allows proper operation of the coolant temperature light (or gage).
See Section A of the Maintenance Schedule folder to find out when the coolant
must
be replaced.
COOLING SYSTEM CARE
Check the cooling system at regular intervals, such as during fuel stops. You
usually do not need to remove the radiator cap to check the coolant level. Lift
the engine hood and look at the "see through" coolant recovery tank. When the
engine
is cold, the coolant level -should be at or slightly above the "Full Cold"
mark on the tank. When the engine has fully warmed up, the level should be at ')r slightly below the "Full Hot" mark on the tank. If the coolant level is low,
5-5

Downloaded from www.Manualslib.com manuals search engine . SECTION 7
SPECIFICATIONS
T hese specifications are given here for information on ly . B efore using them, see the cautions and other instructions
throughout this manual. For fu.rther information , see the
service manual covering the chassis or body part in question. Your Chevrol et dealer may also be abl e to help.
DIMENSIONS
Length -Overall ......... , •.... , •...... 4488mm (176 .7")
He igl;lt -Overall ......................... ':394mm (54.8 ") Wh eelbase "-Overall ................... 2664mm (104.9")
Width-2 Dr. Cpe. & Hatchback .· ............. 1722mm (67.7") 4 Dr. Sedan Hatchback.. . . . . . . . . . . . .. 1730mm (68.1 ")
Metric U .S .
CAPACITIES Mea .... .... .ur.
Gasoline rank (Approx.) All Models .................... 53 litres 14 gal.
Crankcase (Approx . Refililt Oil Change or Oil and Filter Change-
L4 ........ ........... '. ' .. ... 2.8 Litres 3 qts .
V6 . . . . . , . . . . . . . . . . . . . . . . . . . . . . 3 :8 Litres 4 qt • . .
t After refill ; check oil kwel as outlined in "Service and Mantenance " Section .
Cooling (Approx.)· Manual Tran sa x le L4 without AlC ..... . , .. .
L4 withA/C .... ... ........... .
V6 without AlC ...... ...•...... V6 with AlC ....... . Thermostaf.-.-:~-~-. -....... : ....... .
Radiator Pressure Cap
BATTERY RATING
9.0 Litre. 911 •. qls. 9.3 Litres 9¥4 qts.
to.8 Litres 1'1'12 qts.
11.2 Litres 11¥ " .c:Jts. 195"1' (91·e) 15 pal
Imperial
Me.sure
11~gal.
21f2qts .
3Ve qts.
8 qt •.
8 qts. 9V .. qts.
g¥ .. qts.
colci Crank 25 AMP Reserve
Engine .. O"F (-l8"C) Capacity Minutes
L4 350 amps 60
V6 350 amps 80
Heavy Duty "AIi 465 amps 125
7-1

Downloaded from www.Manualslib.com manuals search engine TIRE INFORMATION
Wheel Nut Torque ................. 140 N'm (100 ft. Ibs.)
Complete
tire information will be found in Section 5.
ENGINE SPECIFICATIONS
TYPE
AND PISTON
COM-
NO . OF DISPLACE·
CARBUR-PRESSION
CYL.
MENT ETOR RATIO
BORE STROKE
L4 2.5 L 2 8.25,1
101.6mm 76.2mm
V6 2.8 L 2 8.5'1 89mm 76mm
L4 Firing Order 1-3-4-2
V6 Firing Order 1-2-3-4-5-6
REPLACEMENT PARTS
SPARK PLUGS
The following spark plugs are recommended for your eng'ine
Englne Norma~ ~rvlc.~
L4 AC Type R43TSX
V6 AC Type R44TS
RECOMMENDATIONS FOR FILTERS
ITEM USAGE RECOMMENDATION
Engin'e Oil Filter 2.5 L4 Engine ACType PF40 2.8 V6 Engine AC TYDePF51·
Engine Air 2.5 L4 Engine AC Type A734C Cleaner -Element 2.8 V6 Engine AC Type A735C
Carburetor 2.5 L4 Engine AC Type GF470 Fuel Filter 2.8 V6 Engine AC Type GF471
Positive Crankcase 2.5 L4 Engine AC Type CV795C Ventilator Valve 2.8 V6 Engine AC Type CV789C Canister Filte.r 2.5 L4 Engine GM 7026014 2.8 V6 Engine GM 7026014
I
*The larger PF·5lbil filter is tO,be used in place of the engine oil filter originally installed on your car.
7-2

Downloaded from www.Manualslib.com manuals search engine Switch Headlights .... TEMP (Temperature) .. Locks Door ...
2~19 2-17 1-2
Ignition ............................................. .. 2-5 1-1 2-2
2-25 Keys .. Theft Protection .. Lowering Seats .. Love Seat, Child & Infant: .. Lugglige/Cargo Capacity ... Luggage Rack ... Maintenance Record .. Maintenance Schedule .. Manual Transaxle Clutch Adjustment. .. .
1-10 5-11 2·29 7-12 5-.1
Maintenance ........................................... . 5-8
5-8
2-11
2· 10 2-12 4-1 4-5
1-3
Operating Tips .. Operation .. Shift Speeds. Metal Cleaners .. Metal Damage, Body ... Mirrors, Rearview .. Mobile Radios-. Monoxide Caution, Carbon .. . 2-25 2-1
2-1 2-2
2-2
2-15 Muffler ............................................... . New Car Break-In Period Octane Rating, Gasoline ... Odometer Oil, Engine Capacity .. Change Interval.. Dipstick ... Filter ... PreSsure Gage .. Pressure Light... Recommendation (Gas) .. OIL Light.. Openings, Roof... Opening The Hatchback ... Hood .. Windows ..
6-.1 5-3 (inside Back Cover) 5-3,7·1 2·1-9 2-17
5-3
2-17 (See "Roofs")
2·26 (Inside Back Cover) 1-5 Operating Speeds, New Car... 2-2 Operating Tips Fuel Economy.. 2-4 Trailer Towing.. 1-13 Transaxle... 2-9 Ventilation System.. 2.20 Operation in Foreign Countries.. 2"3 Outside Rearview Mirror.. 1.3 Overheating, Engine.. 3-3 Overseas Operation.. 2.3 Owner Assistance.. 6-1 Owner's Record... 7-11 Oxygen Sensor., 5.2 Paint Care.. 4-4
Paint Damage .. Parking;. Parking Brake .. Parking Lights .. PCV Valve & Filter .. Peda'·TI"avel, Brake ... Pedal Travel, Clutch .. Polishing & Waxing .. Pollution Control Power
4-' 2-. 2-14 7-3 7·2 2-14 5~8
.-. (See "Emission Contron
7-8
Antennas Brakes .. Door Locks .... Seats ... Steering Pressure, Oil Light ... Pressure. Tire Inflation ... Pulse Wiper ...
2-25
2-14
1-2 1-' 2·12
2-15
5-11
2-7
Pushing to Start ................................ .. 5-2 Radiator Antifreeze (Coolant) .. Cap, Prassure .. Checking Level .. Overheating .. Thermostat...
Radios & Antennas ... Raising Seats ... Rear Cargo Cover ...................... .. Compartment .. . Window Defogger .. Trailering .. Rearview Mirrors .. Reclining Seats .. Recovery Tank, Coolant .. Release
Hatc.hback
Hood .. Seatback Latch ... Reminder Lights ....
Replacement Fasteners
5-5 5-. 5-5 3-3 5-7
2-23 -2-25
2-25
2-:27
2-2,2-28 2-21 '·11 1-3 1-' 5-5
2-25 (Inside Back Cover)
1-' (See "Lights") 5-1
5-1 Replacement Maintenance Schedule .. Raplacement Owner's·Manual... 7-13 Replacement Parts ............. ....................... 7-2 Restraints .. Rocking Car When Stuck .. Roofs Carrying Cargo On ... Luggage Carrier .. Rack .. Vinyl .. Vista-Vent. ... Rotation, Tire .. Rustproofing .. Rust Protection ... Sefety Belts .. Seats (See
"Seat Belts") 3-7
1-3,2-2,9 2·29 2·29
'-5 2-26 5-12
'-5 '-5 (See "Seat Belts")
Adjustment.. 1-4 Child... 1-10 Folding.. 2-25 Latches..
1-5 Reclining.... . '-4 Seat Belts Care.. 4.3 Child Restraint ............................................ 1.10 Inspection.. 1-10 Lap/Shoulder.. 1-6 Light/Buzzer Reminder... 1;8 Pregn~nt Women .. Rear Seat. ... Self-Adjusting Brakes .. SENSOR Indicator ..
1-8 2-25 2-14 2-18,5-2 Sensor, Oxygen.... 2-18,5-2 Service & Maintenance.. 5-1 Service Station Information (InSide Back Cover) Sheet Metlll Damage... 4-5