
TRANSMISSION HOT IDLE ENGINE
This message displays and four chimes sound if the
transmission fluid temperature rises above 132°C
(270°F) or rises rapidly. The transmission may shift
gears or apply the torque converter clutch to reduce the
fluid temperature. Driving aggressively or driving on
long hills can cause the transmission fluid temperature
to be higher than normal. If this message appears, you
may continue to drive at a slower speed. Monitor the
transmission fluid temperature and allow it to cool to at
least 110°C (230°F). The transmission fluid temperature
can be monitored with the gauges button on the DIC.
See DIC Operation and Displays
on page 4‑47and
Automatic Transmission Fluidon page 6‑31. Also
check the engine coolant temperature. If it is also hot,
see Engine Overheating on page 6‑38.
If this message is displayed during normal vehicle
operation on flat roads, the vehicle may need service.
See your dealer/retailer for an inspection.
If driving in a performance or competitive manner, the
use of (S) Sport Automatic Mode or (S) Sport Manual
Paddle Shift gear selection is recommended. See
Automatic Transmission Operation
on page 3‑26for
more information. To acknowledge the message, press the RESET button.
The message reappears every 10 minutes until this
condition changes. If you do not press the RESET
button, the message remains on the display until the
condition changes.
TURN SIGNAL ON
This message displays and a sound will be heard if a
turn signal is left on for 1.2 km (three-quarters of a mile).
Move the turn signal/multifunction lever to the off
position.
To acknowledge this message, press the RESET
button.
UNLATCH HEADER TO MOVE TOP
This message displays and a sound will be heard if you
try to lower the convertible top without first unlocking
the top. Move the latch handle to unlock the convertible
top. See
Convertible Top (Manual)
on page 3‑59or
Convertible Top (Power) on page 3‑66.
4-69

Section 6 Service and Appearance Care
Service. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3
Accessories and Modifications . . . . . . . . . . . . . . . . . . 6-3
California Proposition 65 Warning . . . . . . . . . . . . . . . 6-4
California Perchlorate Materials Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
Doing Your Own Service Work . . . . . . . . . . . . . . . . . . 6-5
Adding Equipment to the Outside of the Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6
Gasoline Octane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
Gasoline Specifications . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
California Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
Additives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8
Fuels in Foreign Countries . . . . . . . . . . . . . . . . . . . . . . 6-9
Filling the Tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-9
Filling a Portable Fuel Container . . . . . . . . . . . . . . . 6-12
Checking Things Under the Hood . . . . . . . . . . . . . . . 6-12
Hood Release . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-13
Engine Compartment Overview . . . . . . . . . . . . . . . . 6-14
Engine Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-19
Engine Oil Life System . . . . . . . . . . . . . . . . . . . . . . . . 6-25
Engine Air Cleaner/Filter . . . . . . . . . . . . . . . . . . . . . . . 6-27
Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . 6-31
Manual Transmission Fluid . . . . . . . . . . . . . . . . . . . . 6-31
Hydraulic Clutch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-31
Cooling System (Engine) . . . . . . . . . . . . . . . . . . . . . . 6-32 Cooling System (Intercooler) . . . . . . . . . . . . . . . . . . . 6-33
Engine Coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-34
Engine Overheating . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-38
Overheated Engine Protection
Operating Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-41
Power Steering Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . 6-41
Windshield Washer Fluid . . . . . . . . . . . . . . . . . . . . . . 6-42
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-43
Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-49
Jump Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-50
Rear Axle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-55
Headlamp Aiming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-55
Bulb Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-56
High Intensity Discharge (HID) Lighting . . . . . . . . 6-56
Halogen Bulbs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-56
Headlamps, Front Turn Signal, and Parking Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-56
Taillamps, Turn Signal, and Stoplamps . . . . . . . . 6-58
Replacement Bulbs . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-58
Windshield Replacement . . . . . . . . . . . . . . . . . . . . . . . . . 6-59
Windshield Wiper Blade Replacement . . . . . . . . . . . 6-59
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-62
Winter Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-63
Tire Sidewall Labeling . . . . . . . . . . . . . . . . . . . . . . . . . 6-64
Tire Terminology and Definitions . . . . . . . . . . . . . . . 6-66
6-1

Checking Coolant
1. Verify that the engine and intercooler are no longer hot.
2. Place a cloth to absorb possible coolant loss under the driver's side bleeder valve (A). 3. Loosen, but do not completely unscrew the bleeder
valve to check for coolant in the system.
4. Tighten the bleeder valve if there is coolant flowing out of the bleeder valve.
5. If there is no coolant flowing out of the bleeder valve, there could be a leak in the system. Tighten
the bleeder valve and contact your dealer/retailer
for service.
Engine Coolant
The cooling system in the vehicle is filled with
DEX-COOL®engine coolant. This coolant is designed
to remain in the vehicle for five years or 240 000 km
(150,000 miles), whichever occurs first.
The following explains the cooling system and how
to check and add coolant when it is low. If there is
a problem with engine overheating, see Engine
Overheating on page 6‑38.
6-34

4. With the coolant surge tank pressure cap off, start the engine and let it run until you can feel the
upper radiator hose getting hot. Any time during
this procedure, watch out for the engine
cooling fan.
By this time, the coolant level inside the coolant
surge tank may be lower. If the level is lower, add
more of the proper mixture to the coolant surge
tank until the level stabilizes at the FULL COLD
mark on the coolant surge tank. 5. Replace the pressure cap. Be sure the pressure
cap is hand-tight and fully seated.
Check the level in the surge tank when the system
has cooled down. If the coolant is not at the proper
level, repeat Steps 1 through 4, then reinstall the
pressure cap. If the coolant is not at the proper
level when the system cools down again, see your
dealer/retailer.
Notice: If the pressure cap is not tightly installed,
coolant loss and possible engine damage may
occur. Be sure the cap is properly and tightly
secured.
Engine Overheating
The vehicle has several indicators to warn of engine
overheating.
There is an engine coolant temperature gauge on
the instrument panel cluster. See Engine Coolant
Temperature Gauge
on page 4‑40. The vehicle may
also display a COOLANT OVER TEMPERATURE
message on the Driver Information Center (DIC).
See DIC Warnings and Messages
on page 4‑52for more information.
You may decide not to lift the hood but to get service
help right away. See Roadside Assistance Program
on
page 8‑7.
6-38

If you do decide to lift the hood , make sure the vehicle
is parked on a level surface.
Then check to see if the engine cooling fan is running.
If the engine is overheating, the fan should be running.
If it is not, do not continue to run the engine and have
the vehicle serviced.
Notice: Engine damage from running your engine
without coolant is not covered by your warranty.
See Overheated Engine Protection Operating Mode
on page 6‑41for information on driving to a safe
place in an emergency.
Notice: If the engine catches fire while driving
with no coolant, the vehicle can be badly damaged.
The costly repairs would not be covered by the
vehicle warranty. See Overheated Engine Protection
Operating Mode
on page 6‑41for information on
driving to a safe place in an emergency.
If Steam Is Coming From Your Engine
{WARNING:
Steam from an overheated engine can burn you
badly, even if you just open the hood. Stay away
from the engine if you see or hear steam coming
from it. Turn it off and get everyone away from
the vehicle until it cools down. Wait until there
is no sign of steam or coolant before you open
the hood.
If you keep driving when the vehicles engine is
overheated, the liquids in it can catch fire. You or
others could be badly burned. Stop the engine if
it overheats, and get out of the vehicle until the
engine is cool.
See Overheated Engine Protection Operating
Mode
on page 6‑41for information on driving to
a safe place in an emergency.
6-39

Tires
Your new vehicle comes with high-quality tires
made by a leading tire manufacturer. If you ever
have questions about your tire warranty and
where to obtain service, see your vehicle
Warranty booklet for details. For additional
information refer to the tire manufacturer.
{WARNING:
.Poorly maintained and improperly used
tires are dangerous.
.Overloading your tires can cause
overheating as a result of too much
flexing. You could have an air-out and
a serious accident. SeeLoading the
Vehicle
on page 5‑28.
(Continued)
WARNING: (Continued)
.Underinflated tires pose the same
danger as overloaded tires. The resulting
accident could cause serious injury.
Check all tires frequently to maintain the
recommended pressure. Tire pressure
should be checked when your tires are
cold. See Inflation - Tire Pressure
on
page 6‑70
.
.Overinflated tires are more likely to be
cut, punctured, or broken by a sudden
impact —such as when you hit a
pothole. Keep tires at the recommended
pressure.
.Worn, old tires can cause accidents.
If your tread is badly worn, or if your tires
have been damaged, replace them.
See High-Speed Operation
on page 6‑72for
inflation pressure adjustment for high speed
driving.
6-62

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