Brake Wear (ZR1 Only)
The ZR1 model does not have built-in brake pad wear
indicators and periodic visual inspection of the brake
pads is required to determine when to replace the
brake pads.
Notice: Continuing to drive with worn-out brake
pads could result in costly brake repair.
.Make sure that the brakes have been given
sufficient time to cool and then set the park brake.
RearFront
.Brake pads can be visually inspected through the
wheel by inspecting the outer brake pads at each
wheel.
.Brake pads should be replaced when worn to
two mm of pad thickness. New pads are 10 mm
thick.
.In addition, brake pad inspection is required any
time the tires are removed.
The ZR1 also has an electronic brake pad wear sensor
system. When pads are worn, the CHANGE BRAKE
PADS message displays in the Driver Information
Center. See DIC Warnings and Messages
on
page 4‑52.
Some driving conditions or climates can cause a
brake squeal when the brakes are first applied or lightly
applied. This does not mean something is wrong with
the brakes.
Brake linings should always be replaced as complete
axle sets.
6-46
To locate the nearest GM or run-flat servicing facility,
call Roadside Assistance. For phone numbers and
Roadside Service details see Roadside Assistance
Program
on page 8‑7.
{WARNING:
Run-flat tires are constructed differently than other
tires and could explode during improper service.
You or others could be injured or killed if you
attempt to repair, replace, dismount, or mount
a run-flat tire. Let only an authorized run-flat
service center repair, replace, dismount, and
mount run-flat tires.
The valve stems on your run-flat tires have sensors that
are part of the Tire Pressure Monitor System (TPMS).
See Tire Pressure Monitor System
on page 6‑72.
These sensors contain batteries which are designed
to last for 10 years under normal driving conditions. See
your dealer/retailer if you ever need to have a wheel
replaced, or if the sensors ever need replacement.
Notice: Using liquid sealants can damage the tire
valves and tire pressure monitor sensors in the
vehicle's run-flat tires. This damage would not be
covered by warranty. Do not use liquid sealants in
the vehicle's run-flat tires.
Inflation - Tire Pressure
Tires need the correct amount of air pressure to
operate effectively.
Notice:Do not let anyone tell you that
under‐inflation or over‐inflation is all right.
It is not. If your tires do not have enough air
(under‐inflation), you can get the following:
.Too much flexing
.Too much heat
.Tire overloading
.Premature or irregular wear
.Poor handling
.Reduced fuel economy
If your tires have too much air (over‐inflation),
you can get the following:
.Unusual wear
.Poor handling
.Rough ride
.Needless damage from road hazards
6-70
High-Speed Operation
{WARNING:
Driving at high speeds, 160 km/h (100 mph)
or higher, puts an additional strain on tires.
Sustained high-speed driving causes excessive
heat build up and can cause sudden tire failure.
You could have a crash and you or others could
be killed. Some high-speed rated tires require
inflation pressure adjustment for high speed
operation. When speed limits and road conditions
are such that a vehicle can be driven at high
speeds, make sure the tires are rated for high
speed operation, in excellent condition, and set
to the correct cold tire inflation pressure for the
vehicle load.
If you will be driving your vehicle at speeds of
175 mph (282 km/h) or higher, where it is legal,
set the cold inflation pressure to the maximum inflation
pressure shown on the tire sidewall, or 38 psi (265 kPa),
whichever is lower. See the example following. When
you end this high-speed driving, return the tires to the
cold inflation pressure shown on the Tire and Loading
Information label. See Loading the Vehicle
on
page 5‑28. Example:
You will find the maximum load and inflation pressure
molded on the tire's sidewall, in small letters, near the
rim flange. It will read something like this: Maximum
load 690 kg (1521 lbs) 300 kPa (44 psi) Max. Press.
For this example, you would set the inflation pressure
for high‐speed driving at 38 psi (265 kPa).
Racing or other competitive driving may affect the
warranty coverage of your vehicle. See your warranty
booklet for more information.
Tire Pressure Monitor System
The Tire Pressure Monitor System (TPMS) uses radio
and sensor technology to check tire pressure levels.
The TPMS sensors monitor the air pressure in your
vehicle's tires and transmit tire pressure readings to a
receiver located in the vehicle.
Each tire, including the spare (if provided), should be
checked monthly when cold and inflated to the inflation
pressure recommended by the vehicle manufacturer
on the vehicle placard or tire inflation pressure label.
(If your vehicle has tires of a different size than the size
indicated on the vehicle placard or tire inflation pressure
label, you should determine the proper tire inflation
pressure for those tires.)
6-72
Tire Pressure Monitor Operation
This vehicle may have a Tire Pressure Monitor System
(TPMS). The TPMS is designed to warn the driver when
a low tire pressure condition exists. TPMS sensors are
mounted onto each tire and wheel assembly on your
vehicle. The TPMS sensors monitor the air pressure
in the vehicle's tires and transmits the tire pressure
readings to a receiver located in the vehicle.
When a low tire pressure
condition is detected,
the TPMS illuminates
the low tire pressure
warning light, located
in the instrument panel
cluster.
At the same time a message to check the pressure in a
specific tire appears on the Driver Information Center
(DIC) display. The low tire pressure warning light and
the DIC warning message appear at each ignition
cycle until the tires are inflated to the correct inflation
pressure. Using the DIC, tire pressure levels can be
viewed by the driver. For additional information and
details about the DIC operation and displays see DIC
Operation and Displays
on page 4‑47and DIC
Warnings and Messages on page 4‑52. The low tire pressure warning light may come on in cool
weather when the vehicle is first started, and then turn
off as you start to drive. This could be an early indicator
that the air pressure in the tire(s) are getting low and
need to be inflated to the proper pressure.
A Tire and Loading Information label, attached to
your vehicle, shows the size of your vehicle's original
equipment tires and the correct inflation pressure for
your vehicle's tires when they are cold. See
Loading the
Vehicle
on page 5‑28, for an example of the Tire and
Loading Information label and its location on your
vehicle. Also see Inflation - Tire Pressure
on page 6‑70for additional information.
Your vehicle's TPMS can warn you about a low tire
pressure condition but it does not replace normal tire
maintenance. See Tire Inspection and Rotation
on
page 6‑76, When It Is Time for New Tireson
page 6‑76, and Tires on page 6‑62.
Notice: Liquid tire sealants could damage the
Tire Pressure Monitor System (TPMS) sensors.
Sensor damage caused by using a tire sealant is
not covered by your warranty. Do not use liquid
tire sealants.
6-74
TPMS Malfunction Light and Message
The TPMS will not function properly if one or more of
the TPMS sensors are missing or inoperable. When the
system detects a malfunction, the low tire warning light
flashes for about one minute and then stays on for the
remainder of the ignition cycle. A DIC warning message
is also displayed. The low tire warning light and DIC
warning message come on at each ignition cycle until
the problem is corrected. Some of the conditions that
can cause the malfunction light and DIC message to
come on are:
.The TPMS sensor matching process was not done
or not completed successfully. The DIC message
should go off after successfully completing the
sensor matching process.
.One or more TPMS sensors are missing or
damaged. Under these conditions the TPMS
malfunction light (low tire warning light) comes
on, and at the same time the DIC message
is displayed. The DIC message and TPMS
malfunction light should go off once the TPMS
sensors are installed and the sensor matching
process is performed successfully.
.Replacement tires or wheels do not match your
vehicle's original equipment tires or wheels.
Tires and wheels other than those recommended
for your vehicle could prevent the TPMS from
functioning properly. See Buying New Tires
on
page 6‑77.
.Operating electronic devices or being near facilities
using radio wave frequencies similar to the TPMS
could cause the TPMS sensors to malfunction.
If the TPMS is not functioning it cannot detect or signal
a low tire condition. See your dealer/retailer for service
if the TPMS malfunction light and DIC message comes
on and stays on.
TPMS Sensor Matching Process
Each TPMS sensor has a unique identification code.
Any time you replace one or more of the TPMS sensors
or rotate your vehicle's tires, the identification codes
will need to be matched to the new tire/wheel position.
The sensors are matched to the tire/wheel positions in
the following order: driver side front tire, passenger side
front tire, passenger side rear tire, and driver side rear
tire using a TPMS diagnostic tool. See your dealer/
retailer for service.
6-75
FusesUsage
CTSY/LAMP Courtesy Lamp
DR LCKDoor Locks
DRIV DR
SWITCH Driver Door Switch
ECM Engine Control Module (ECM)
EXH MDL Exhaust Module (Z06 & ZR1),
Spare (Coupe and Convertible)
GM LAN
RUN/CRNK GM LAN Devices
HTD SEAT/
WPR RLY Heated Seat, Wiper Relays
HVAC/
PWR SND Heating. Ventilation/Air Conditioning,
Power Sounder
IGN SWTCH/
INTR SNSR Ignition Switch, Intrusion Sensor
ISRVM/HVAC Electric Inside Rearview Mirror,
Heating, Ventilation, Air Conditioning
ONSTAR OnStar
®
RDO/S‐BAND Radio, S‐Band
REAR FOG/
ALDL/TOP
SWTCH Rear Fog Lamp, Assembly Line
Diagnostic Link Connector,
Convertible Top Switch
REVERSE
LAMPS Reverse Lamps
Fuses
Usage
RUN CRNK Run/Crank Relay
SDM/AOS
SWTCH
AIRBAG Sensing and Diagnostic Module,
Automatic Occupant Sensing Module,
Airbag
SPARE Spare
SPARE Spare
SPARE Spare
SPARE Spare
STOP LAMP Stop Lamp
SWC DM Steering Wheel Dimming
TELE
SWTCH/MSM Telescope Switch, Memory Seat
Module
TONNEAU
RELSE Tonneau Release
TPA Tonneau Pulldown Actuator
Fuses Usage
BLANKBlank
BLANK Blank
FUEL DR
RELSE Fuel Door Release
6-103
FuseUsage
6Oxygen Sensor
7 Battery Main 5
8 Parking Lamps
9 Powertrain Relay Input/Electronic
Throttle Control
10 Manual Transmission Solenoids
11 Antilock Braking System
12 Odd Numbered Fuel Injectors
13 Electronic Suspension Control
(Option)
14 Canister Purge Solenoid,
Mass Air Flow Sensor
15 Air Conditioner Compressor
16 Even Numbered Fuel Injectors
17 Windshield Washer
18 Headlamp Washer
19 Passenger Side Low-Beam Headlamp
20 Fuel Pump (except ZR1)
21 Driver Side Low-Beam Headlamp
22 Front Fog Lamp
23 Passenger Side High-Beam
Headlamp
Fuse
Usage
24Driver Side High-Beam Headlamp
56 Engine Control Module (ECM)/
Transmission Control Module (TCM)/
Easy Key Module
J-Style Fuses
Usage
25Cooling Fan
26 Battery Main 3
27 Antilock Brake System
28 Heating/Ventilation/Air Conditioning
Blower
29 Battery Main 2
30 Starter
31 Audio Amplifier
32 Intercooler Pump
33 Battery Main 1
Micro-Relays Usage
34Horn
35 Air Conditioning Compressor
36 Windshield Washer
37 Parking Lamps, Foglamps
6-106