
Tire Terminology and Definitions
Air Pressure:The amount of air inside the tire
pressing outward on each square inch of the tire.
Air pressure is expressed in pounds per square
inch (psi) or kilopascal (kPa).
Accessory Weight
:This means the combined
weight of optional accessories. Some examples of
optional accessories are, automatic transmission,
power steering, power brakes, power windows,
power seats, and air conditioning.
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 Tire 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. See Inflation - Tire Pressure
on
page 6‑70
.
Curb Weight
: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.
See Loading the Vehicle
on page 5‑28.
GAWR FRT
:Gross Axle Weight Rating for the
front axle. See Loading the Vehicle
on page 5‑28.
GAWR RR
:Gross Axle Weight Rating for the rear
axle. See Loading the Vehicle
on page 5‑28.
6-66

GM recommends replacing tires in sets of four. This is
because uniform tread depth on all tires will help keep
your vehicle performing most like it did when the tires
were new. Replacing less than a full set of tires can
affect the braking and handling performance of your
vehicle. See Tire Inspection and Rotation on page 6‑76.
Winter tires with the same speed rating as your original
equipment tires may not be available for H, V, W, Y and
ZR speed rated tires. If you choose snow tires with a
lower speed rating, never exceed the tire's maximum
speed capability.
{WARNING:
Mixing tires could cause you to lose control while
driving. If you mix tires of different sizes (other
than those originally installed on your vehicle),
brands, or types (radial and bias-belted tires), the
vehicle may not handle properly, and you could
have a crash. Using tires of different sizes (other
than those originally installed on your vehicle),
brands or types, may also cause damage to your
vehicle. Be sure to use the correct size, brand,
and type tires on all four wheels.
{WARNING:
If you use bias-ply tires on the vehicle, the
wheel rim flanges could develop cracks
after many miles of driving. A tire and/or
wheel could fail suddenly, causing a crash.
Use only radial-ply tires with the wheels on
the vehicle.
If you must replace your vehicle's tires with those
that do not have a TPC Spec number, make sure
they are the same size, load range, speed rating,
and construction type (radial and bias‐belted tires)
as your vehicle's original tires.
Vehicles that have a tire pressure monitoring system
could give an inaccurate low‐pressure warning if
non‐TPC Spec rated tires are installed on it. Non‐TPC
Spec rated tires may give a low‐pressure warning that
is higher or lower than the proper warning level you
would get with TPC Spec rated tires. See Tire Pressure
Monitor System on page 6‑72.
Your vehicle's original equipment tires are listed on the
Tire and Loading Information label. See Loading the
Vehicle
on page 5‑28, for more information about the
Tire and Loading Information label and its location on
your vehicle.
6-78

Instrument Panel, Vinyl, and Other
Plastic Surfaces
A soft cloth dampened with water may be used to
remove dust. If a more thorough cleaning is necessary,
a clean soft cloth dampened with a mild soap solution
can be used to gently remove dust and dirt. Never
use spot lifters or removers on plastic surfaces.
Many commercial cleaners and coatings that are
sold to preserve and protect soft plastic surfaces may
permanently change the appearance and feel of the
interior and are not recommended. Do not use silicone
or wax-based products, or those containing organic
solvents to clean the vehicle's interior because they
can alter the appearance by increasing the gloss in
a non-uniform manner.
Some commercial products may increase gloss on the
instrument panel. The increase in gloss may cause
annoying reflections in the windshield and even make
it difficult to see through the windshield under certain
conditions.
Cargo Cover and Convenience Net
Wash with warm water and mild detergent, rinse with
cold water and tumble dry on low. Do not use chlorine
bleach.
Care of Safety Belts
Keep belts clean and dry.
{WARNING:
Do not bleach or dye safety belts. It may severely
weaken them. In a crash, they might not be able
to provide adequate protection. Clean safety belts
only with mild soap and lukewarm water.
Weatherstrips
Silicone grease on weatherstrips will make them last
longer, seal better, and not stick or squeak. Apply
silicone grease with a clean cloth. During very cold,
damp weather frequent application may be required.
See Recommended Fluids and Lubricants
on
page 7‑10.
6-93

Section 7 Maintenance Schedule
Maintenance Schedule. . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
Scheduled Maintenance . . . . . . . . . . . . . . . . . . . . . . . . 7-3
Owner Checks and Services . . . . . . . . . . . . . . . . . . . . 7-8 Recommended Fluids and Lubricants . . . . . . . . . . 7-10
Maintenance Replacement Parts . . . . . . . . . . . . . . 7-12
Engine Drive Belt Routing . . . . . . . . . . . . . . . . . . . . . 7-13
Maintenance Record . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-14
7-1

First Engine Oil Change After Every
80 000 km/50,000 Miles
.Engine air cleaner filter replacement. See Engine
Air Cleaner/Filter on page 6‑27.
.Automatic transmission fluid change (severe
service) for vehicles mainly driven in heavy city
traffic in hot weather, in hilly or mountainous
terrain, when frequently towing a trailer, or used
for taxi, police, or delivery service. See Automatic
Transmission Fluid on page 6‑31.
First Engine Oil Change After Every
160 000 km/100,000 Miles
.Automatic transmission fluid change (normal
service). See Automatic Transmission Fluidon
page 6‑31.
.Spark plug replacement and spark plug wires
inspection. An Emission Control Service.
First Engine Oil Change After Every
240 000 km/150,000 Miles
.Engine cooling system drain, flush, and refill,
cooling system and cap pressure check, and
cleaning of outside of radiator and air conditioning
condenser (or every 5 years, whichever occurs
first). See Engine Coolant
on page 6‑34.An
Emission Control Service.
.ZR1 Only: Intercooler system drain, flush, and refill
(or every 5 years, whichever occurs first). See
Engine Coolant on page 6‑34.
.Engine accessory drive belt inspection for fraying,
excessive cracks, or obvious damage and
replacement, if needed. An Emission Control
Service.
7-6

Engine Drive Belt Routing
6.2L LS3 V8, 7.0L LS7 V8 Engines
6.2L LS9 V8 Engine
7-13

Vehicle Data Recording and
Privacy
Your GM vehicle has a number of sophisticated
computers that record information about the vehicle’s
performance and how it is driven. For example, your
vehicle uses computer modules to monitor and control
engine and transmission performance, to monitor the
conditions for airbag deployment and deploy airbags in
a crash and, if so equipped, to provide antilock braking
to help the driver control the vehicle. These modules
may store data to help your dealer/retailer technician
service your vehicle. Some modules may also store
data about how you operate the vehicle, such as rate of
fuel consumption or average speed. These modules
may also retain the owner ’s personal preferences, such
as radio pre-sets, seat positions, and temperature
settings.
Event Data Recorders
This vehicle has an Event Data Recorder (EDR).
The main purpose of an EDR is to record, in certain
crash or near crash-like situations, such as an airbag
deployment or hitting a road obstacle, data that will
assist in understanding how a vehicle's systems
performed. The EDR is designed to record data related
to vehicle dynamics and safety systems for a short
period of time, typically 30 seconds or less. The EDR
in this vehicle is designed to record such data as:
.How various systems in your vehicle were
operating
.Whether or not the driver and passenger safety
belts were buckled/fastened
.How far, if at all, the driver was pressing the
accelerator and/or brake pedal
.How fast the vehicle was traveling
This data can help provide a better understanding of the
circumstances in which crashes and injuries occur.
8-18

A
Accessories and Modifications . . . . . . . . . . . . . . . . . . . . . . .6-3
Accessory Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-24
Accessory Power Outlets . . . . . . . . . . . . . . . . . . . . . . . . . . 4-20
Active Handling System . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-8
Active Handling System Light . . . . . . . . . . . . . . . . . . . . . . 4-39
Add-On Electrical Equipment . . . . . . . . . . . . . . . . . . . . . 6-100
Additives, Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-8
Air Cleaner/Filter, Engine . . . . . . . . . . . . . . . . . . . . . . . . . . 6-27
Air Dam, Front . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-22
Air Filter, Passenger Compartment . . . . . . . . . . . . . . . . 4-28
AirbagAdding Equipment to Your Airbag-EquippedVehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-59
Airbag System How Does an Airbag Restrain? . . . . . . . . . . . . . . . . . . . 2-50
Passenger Sensing System . . . . . . . . . . . . . . . . . . . . . . 2-53
Servicing Your Airbag-Equipped Vehicle . . . . . . . . . . 2-58
What Makes an Airbag Inflate? . . . . . . . . . . . . . . . . . . . 2-50
What Will You See After an Airbag Inflates? . . . . . . 2-51
When Should an Airbag Inflate? . . . . . . . . . . . . . . . . . . 2-48
Where Are the Airbags? . . . . . . . . . . . . . . . . . . . . . . . . . . 2-46
Airbags Passenger Status Indicator . . . . . . . . . . . . . . . . . . . . . . . 4-34
Readiness Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-33
System Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-44 Antenna
Diversity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-109
Antenna, XM™ Satellite Radio Antenna
System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-109
Antilock Brake System (ABS) . . . . . . . . . . . . . . . . . . . . . . . .5-5 Warning Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-37
Appearance Care
Aluminum or Chrome-Plated Wheels . . . . . . . . . . . . . 6-97
Care of Safety Belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-93
Cargo Cover and Convenience Net . . . . . . . . . . . . . . . 6-93
Chemical Paint Spotting . . . . . . . . . . . . . . . . . . . . . . . . . . 6-99
Cleaning Exterior Lamps/Lenses . . . . . . . . . . . . . . . . . 6-94
Coated Moldings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-92
Convertible Top . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-97
Fabric/Carpet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-91
Fiberglass Springs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-99
Finish Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-95
Finish Damage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-98
Instrument Panel, Vinyl, and Other PlasticSurfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-93
Interior Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-90
Leather . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-92
Removable Roof Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-96
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-98
Underbody Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . 6-98
Washing Your Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-94
Weatherstrips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-93
Windshield and Wiper Blades . . . . . . . . . . . . . . . . . . . . . 6-96
i - 1