Page 249 of 372

Engine Coolant
The following explains your cooling system and how to
add coolant when
it is low. If you have a problem with
engine overheating, see “Engine Overheating” in the
Index.
The proper coolant for your Aurora will:
0 Give freezing protection down to -34°F (-37°C)
0 Give boiling protection up to 262°F (128°C).
0 Protect against rust and corrosion.
0 Help keep the proper engine temperature.
0 Let the warning lights work as they should.
What to Use
Use a mixture of one-half c.lt.crr~ wwtor (preferably
distilled) and one-half antifreeze that meets “GM
Specification 182S-M,” which won‘t damage aluminum
parts.
You call also use a recycled coolant conforming to
GM Specification 1825-M
with a complete coolant tlush
and refill. Use GM Engine Coolant Supplement (sealer)
with any cotnplete coolant flush and refill. If you use
this mixture, you don‘t need to add anything else.
A
special procedure is required for adding sealer; see the
ALI~o~~ Service Manual. (To order a service 1nanual. see
”Service Publications“
in the Index.)
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Page 271 of 372

Wheel Replacement
Replace any wheel that is bent, cracked, or badly rusted
or corroded. If wheel nuts keep coming loose, the wheel,
wheel bolts, and wheel nuts should be replaced.
If the
wheel leaks air, replace it (except some aluminum
wheels, which can sometimes
be repaired). See your
Aurora retailer if any
of these conditions exist.
Your retailer will know the kind
of wheel you need.
Each new wheel should have the same load carrying
capacity, diameter, width, offset, and be mounted the
same way as the one it replaces.
If you need
to replace any of your wheels, wheel bolts,
or wheel nuts, replace them only with new
GM original
equipment parts. This way, you will be sure to have the
right wheel, wheel bolts, and wheel nuts for your Aurora
model.
I NOTICE:
The wrong wheel can also cause problems with
bearing life, brake cooling,
speedometer/odometer calibration, headlamp aim, bumper height, vehicle ground clearance,
and tire
or tire chain clearance to the body and
chassis.
6-41
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Page 290 of 372

Capacities and Specifications
Automatic Transaxle (Overdrive)
Wlwn cllvrinirlg or seplcrcing tol-q~te convertel; more jlllicl n~tr~‘ bo rwederl.
Pan Removal and Replacement ................................ 6.5 quarts 6.0 L
After Complete Overhaul ..................................... I 1 quarts 10.5 L
Coolingsystem .............................................. 13 quarts 12.0 L
Refrigerant (R=134a), Air Conditioning ......................... 2.0 pounds 0.9 kg
Not trll uir conditionirlg r.efi.igel-crnts are the smw. If the nir conditiorrillg sj-steul in ~olrr vehicle Ileocls wfi-igesmt, he s1r1-e tho
proper r.cfi-igercult is used. If you ’re not ~111-e. trsk yolrr Ausoln t-etllilel: For c-tdclitionrrl i~~/i~mt~tion, .we jwrr Wirrrtrnt?* trrd
Owrwr Assistmcp Ir4fC)rmution” hooklet.
Enginecrankcase ........................................... 7 c]llasts 6.6 L
When chcmgir~g~fi’ltet; up to 0.5 qlrcu-t (0.5 liter) more oil mry be t1cecltd
FuelTank .................................................. 19.4 gallons 73.4 L
Windshield Washer Fluid Tanks ................................ 3.8 quarts 3.6 L
Power Steering
PumpOnly ................................................ 1 pint 0.5 L
Complete System ........................................... 1.5 pints 0.7 L
Tire Pressures, Sizes .......................................... See Tire-Loading Information label on driver’s
door.
Wheel Nut Torque ........................................... 100 pound-feet 140 Nom
NOTE: All capacities are approximate. When adding, be sure to fill to the appropriate level as recommended in this
manual.
6-60
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Page 296 of 372

Maintenance Schedule
I Schedule I Definition I
Follow Maintenance Schedule I if any one of these is
true for your vehicle:
0 Most trips are less than 5 to 10 miles (8 to 16 km).
This is particularly important when outside
temperatures are below freezing.
0 Most trips include extensive idling (such as frequent
driving
in stop-and-go traffic).
Most trips are through dusty areas.
0 You frequently tow a trailer or use a carrier on top of
your vehicle.
Schedule
I should also be followed if the vehicle is used
for delivery service, police, taxi, or other commercial
application.
Schedule I Intervals
Every 3,000 Miles (5 000 km) or 3 Months,
Whichever Occurs First
Every 6,000 Miles (10 000 km) or 6 Months,
Whichever Occurs First
Chassis Lubrication
At 6,000 Miles (10 000 km) - Then Every
12,000 Miles
(25 000 km)
Every 15,000 Miles (25 000 km)
Engine Oil and Filter Change
Tire Rotation Air Cleaner
Filter Inspection, if driving in dusty
conditions
Every 30,000 Miles (50 000 km)
Air Cleaner Filter Replacement
Spark Plug Wire Inspection
Fuel Tank. Cap and Lines Inspection
Engine Accessory Drive Belt Inspection (or every
24 months, whichever occurs first)
Cooling System Service (or every 24 months,
whichever occurs first)
Every 50,000 Miles (83 000 km)
Every 100,000 Miles
(166 000 km)
Automatic Transaxle Service (severe conditions only)
Spark Plug Replacement
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Page 297 of 372
Maintenance Schedule
Follow Schedule I1 orziy if none of the conditions from
Schedule
I is true.
Every 7,500 Miles (12 500 km)
Engine Oil and Filter Chanp (or every 12 months,
Chassis Lubrication (or every
12 months, whichever
whichever
occurs first)
occurs first)
At 7,500 Miles (12 500 km) - Then Every
15,000 Miles (25 000 km)
Every 30,000 Miles (50 000
km)
Tire Rotation
Engine Accessory Drive Belt Inspection (or every
24 months, whichever occurs first)
Cooling System Service (or every
24 months.
whichever occurs first)
Spark Plug Wire Inspection
Air Cleaner Filter Replacement
Fuel Tank. Cap
and Lines Inspection
Autotnatic Tr-ansaxle Service (se1:el-e conditions only)
Spark Plug Replacement
Every 50,000 Miles (83 000 km)
Every 100,000 Miles
(166 000 km)
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Page 303 of 372
I Maintenance Schedule I I
27,000 Miles (45 000 km)
0 Change engine oil and filter (or every
3 months, whichever occurs first).
An Emission Control Service. *
DATE
SERVICED BY: ACTUAL MILEAGE
30,000 Miles (50 000 kt)
Change engine oil and filter (or every
3 months, whichever occurs first).
An Emission Control Service. *
0 Lubricate the suspension and steering
linkage, transaxle shift linkage, parking
brake cable guides and underbody contact
points and linkage (or every
6 months,
whichever occurs first).
0 Inspect engine accessory drive belt (or
every
24 months, whichever occurs first).
An Emission Control Service
0 Drain, flush and refill cooling system (or
every 24 months, whichever occurs first).
Inspect hoses. Clean radiator, condenser,
pressure cap and neck. Pressure test the
cooling system and pressure cap.
(Continued)
7-11
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Page 309 of 372
I Maintenance Schedule I 1
57,000 Miles (95 000 km)
0 Change engine oil and filter (or every
3 months, whichever occurs first).
An Emission Control Service. *
I DATE I ACTUALMILEAGE ISERVICED BY:^
60,000 Miles (100 000 km)
0 Change engine oil and filter (or every
3 months, whichever occurs first).
An Emission Control Service. ‘I’
0 Lubricate the suspension and steering
linkage, transaxle shift linkage, parking
brake cable guides and underbody contact
points and linkage (or every
6 months,
whichever occurs first).
0 Inspect engine accessory drive belt (or
every
24 months, whichever occurs first).
An Emission Control Sewice.
0 Drain, flush and refill cooling system (or
every
24 months, whichever occurs first).
Inspect hoses. Clean radiator, condenser,
pressure cap and neck. Pressure test the
cooling system and pressure cap. See
“Engine Coolant”
in the Index for what to
use. An Emission Control Service.
(Continued)
7-17
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Page 315 of 372

Maintenance Schedule I
90,000 Miles (150 000 km)
0 Change engine oil and filter (or every
3 months, whichever occurs first).
An Emission Control Sewice. ‘%
0 Lubricate the suspension and steering
linkage, transaxle shift linkage, parking
brake cable guides and underbody contact
points and linkage (or every
6 months,
whichever occurs first).
0 Inspect engine accessory drive belt (or
every 24 months, whichever occurs first).
An EIqaission Control Service.
0 Drain, flush and refill cooling system (or
every 24 months, whichever occurs first).
Inspect
hoses. Clean radiator, condenser,
pressure cap and neck. Pressure test the
cooling system and pressure cap. See
“Engine Coolant”
in the Index for what to
use.
An Emission Control Service.
0 Inspect spark plug wires. Arz Ernission
0 Replace air cleaner filter. Replace filter
Contd Sewice.
more often under dusty conditions.
A11 Enuksiora Control Service.
0 Inspect fuel tank, cap and lines for damage
or leaks. Inspect fuel cap gasket for any
damage. Replace parts
as needed.
An Emission Control Service.
0 Rotate tires. See “Tire Inspection and
Rotation”
in the Index for proper rotation
pattern and additional information.
I ACTUAL MILEAGE SERVICED BY
7-23
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