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Some driving conditions or climates may cause a brake
squeal when the brakes are first applied or lightly
applied. This does not mean something is wrong with
your brakes.
Brake linings should always be replaced as complete
axle sets.
Brake Pedal Travel
See your retailer if the brake pedal does not return to
normal height, or
if there is a rapid increase in pedal
travel. This could be a sign of brake trouble.
Brake Adjustment
Every time you apply the brakes, with or without the
vehicle moving, your brakes adjust for wear.
Replacing Brake System Parts
The braking system on a modern vehicle is complex.
Its many parts have
to be of top quality and work well
together if the vehicle
is to have really good braking.
Vehicles we design and test have top-quality
GM brake
parts in them, as your Aurora does when it is new. When
you replace parts of your braking system
-- for example,
when your brake linings wear down and you have
to
have new ones put in -- be sure you get new genuine
GM replacement parts. If you don’t, your brakes may
no longer work properly. For example, if someone
puts in brake linings that are wrong for your vehicle,
the balance between your front and rear brakes can
change
-- for the worse. The braking performance
you’ve come to expect can change in many other ways
if someone puts in the wrong replacement brake parts.
ProCarManuals.com
Page 293 of 388

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.
See
“Changing a Flat Tire” in the Index for more
information.
Used Replacement Wheels
I
I 1
i
’ A CAUTION: I
Putting a used wheel on your vehicle is
dangerous. You can’t know how it’s been used or
how many miles it’s been driven. It could
fail
suddenly and cause an accident. If you have to
replace
a wheel, use a new GM original
equipment wheel.
Tire Chains
NOTICE:
Use tire chains only where legal and only when
you must. Use only
SAE Class ccS” type chains
that are the proper size for your tires. Install
them on the front tires and tighten them
as
tightly as possible with the ends securely
fastened. Drive slowly and follow the chain
manufacturer’s instructions.
If you can hear the
chains contacting your vehicle, stop and retighten
them.
If the contact continues, slow down until it
stops. Driving too fast or spinning the wheels
with chains on will damage your vehicle.
6-47
ProCarManuals.com
Page 315 of 388

Air Conditioning Refrigerants
Not all air conditioning refrigerants are the same.
If the air conditioning system in your vehicle needs
refrigerant, be sure the proper refrigerant is used.
If you’re not sure, ask your Aurora retailer.
Vehicle Dimensions
Length ................ 205.4 inches (5 217 mm)
Width
.................. 74.4 inches (1 890 mm)
Height
.................. 55.4 inches (1 407 mm)
Wheelbase
............. 11 3.8 inches (2 89 1 mm)
Front Tread
.............. 62.5 inches (1 587 mm)
Rear Tread
.............. 62.5 inches (1 587 mm)
Engine Specifications
VIN Engine Code ........................... C
Type
.................................... V8
Displacement ........................ 4.0 Liters
Horsepower
............................. 250
Compression Ratio
...................... 10.3: 1
Firing Order
.................... -2-7-3-4-5-6-8
Thermostat Temperature
Specification
.................... 180°F (82°C)
Normal Maintenance
Replacement Parts
Air Cleaner Element .......... AC Type A- 1096C
Engine
Oil Filter ................ AC Type PF-58
Spark Plugs
................... AC Type041 -900
uap: 0.050 inch (1.52 mm)
ProCarManuals.com