
SERVICE CHARGING SYSTEM
If this message displays while you are driving, there
may be a problem with the electrical charging system.
It could mean that there is a loose or broken drive belt
or that there is another electrical problem. Have the
vehicle checked right away by your dealer/retailer.
Driving while this message is on could drain the battery.
If you must drive a short distance with the message on,
be certain to turn off the vehicle's accessories, such as
the radio and air conditioner.
Multiple chimes sound when this message is displayed.
To acknowledge the message, press the RESET button.
The message reappears every 10 minutes until this
condition changes.
SERVICE ELECTRICAL SYSTEM
This message displays if an electrical problem has
occurred within the Powertrain Control Module (PCM).
Have the vehicle serviced by your dealer/retailer.
SERVICE FUEL SYSTEM
This message displays if the Powertrain Control Module
(PCM) has detected a problem within the fuel system.
Have the vehicle serviced by your dealer/retailer. This
message also displays when the cluster is not getting
fuel information from the PCM.
SERVICE RIDE CONTROL
This message displays when the Selective Ride Control
system has detected a malfunction and the system
must be serviced. See your dealer/retailer. If a fault is
present in the Selective Ride Control system which
causes the shocks to be in their full soft condition, the
messages SERVICE RIDE CONTROL, SHOCKS
INOPERATIVE, and MAXIMUM SPEED 129 km/h
(80 MPH) will display together. See Selective Ride
Control
on page 5‑14for more information.
SERVICE TIRE MONITOR
This message displays if a part on the Tire Pressure
Monitor System (TPMS) is not working properly. The tire
pressure light also flashes and then remains on during
the same ignition cycle. See Tire Pressure Light
on
page 4‑40. Several conditions may cause this message
to appear. See Tire Pressure Monitor Operationon
page 6‑74for more information. If the warning comes
on and stays on, there may be a problem with the
TPMS. See your dealer/retailer.
4-64

SERVICE TRACTION SYSTEM
If this message displays when you are driving, there is a
problem with the Traction Control System (TCS) and the
vehicle is in need of service. See your dealer/retailer.
When this message is displayed, the system will not
limit wheel spin. Adjust your driving accordingly.
The traction control system (TCS) warning light on the
instrument panel cluster will also turn on and a sound
will be heard.
When this message is displayed, the computer
controlled systems will not assist the driver in controlling
the vehicle. Have the system repaired by your dealer/
retailer as soon as possible. Adjust your driving
accordingly. See Traction Control System (TCS)
on
page 5‑6for more information.
To acknowledge the message, press the RESET button.
SERVICE TRANSMISSION
This message displays when there is a problem with the
transmission. See your dealer/retailer for service.
SERVICE VEHICLE SOON
This message displays and a sound will be heard when
there may be an electrical or another system problem
with the vehicle. Have your vehicle checked by your
dealer/retailer if this message keeps appearing.
SET PARK BRAKE FOR SEAT RECALL
If the vehicle has a manual transmission, this message
displays if you try to recall the memory positions when
the ignition is on and the parking brake is not set. If the
vehicle is on, you must set the parking brake in order
for the memory positions to recall. See Memory Seat,
Mirrors and Steering Wheel
on page 2‑4for more
information.
SET PARK BRAKE TO MOVE TOP
If the vehicle has a manual transmission, this message
displays and a sound will be heard if you try to operate
the power convertible top without first setting the
parking brake. Set the parking brake before trying to
operate the power convertible top. See Convertible Top
(Manual)
on page 3‑59or Convertible Top (Power)on
page 3‑66for more information.
SHIFT TO PARK
If the vehicle has an automatic transmission, this
message displays if the vehicle is not in P (Park) when
the engine is being turned off. The vehicle will be in
ACCESSORY Once the shift lever is moved to P (Park),
the vehicle will turn off.
4-65

The vehicle will remain in ACCESSORY, without the
20 minute time-out period, until the shift lever is moved
to P (Park) or until the driver presses the pushbutton to
restart the vehicle. See Ignition Positions
on page 3‑23for more information.
SHIFT TO PARK OR SET PARK BRAKE
FOR TOP
If the vehicle has an automatic transmission, this
message displays and a sound will be heard if you
try to operate the power convertible top without first
shifting into P (Park) or setting the parking brake.
Either shift the vehicle into P (Park) or set the parking
brake before trying to operate the power convertible
top. See Convertible Top (Manual)
on page 3‑59or
Convertible Top (Power)on page 3‑66for more
information.
SHOCKS INOPERATIVE
This message displays when a malfunction is present in
the Selective Ride Control system which is causing the
shocks to be in their full soft mode. This is a warning to
the driver that the vehicle handling may be affected.
Have the vehicle serviced by your dealer/retailer as
soon as possible.
To acknowledge the message, press the RESET button.
The message reappears every 10 minutes until this
condition changes.
TIRE FLAT
{WARNING:
When the LOW TIRE PRESSURE or TIRE FLAT
message is displayed on the Driver Information
Center, your vehicle's handling capabilities will
be reduced during severe maneuvers. If you drive
too fast, you could lose control of your vehicle.
You or others could be injured. Do not drive
over 55 mph (90 km/h) when the LOW TIRE
PRESSURE or TIRE FLAT message is displayed.
Drive cautiously and check your tire pressures as
soon as you can.
This message displays when one or more of the tires is
flat. This message also displays LEFT FRONT, RIGHT
FRONT, LEFT REAR, or RIGHT REAR to indicate
which tire is affected. Multiple chimes sound and the tire
pressure light on the instrument panel cluster comes on
when this message is displayed. See Tire Pressure
Light
on page 4‑40.
4-66

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

To scan preset stations:
Press and hold
torufor four seconds until PRESET
SCAN displays. The radio goes to the next preset
station, plays for a few seconds, then goes to the next
preset station. Press
toruagain or one of the
pushbuttons to stop scanning presets.
The radio only scans stations with a strong signal.
1-6 (Preset Pushbuttons) : Press to play stations that
are programmed to the radio preset pushbuttons.
Setting Preset Stations
Up to 30 stations (six FM1, six FM2, and six AM,
six XM1 and six XM2), and equalization settings for
each station can be programmed on the six numbered
pushbuttons.
To set presets:
1. Turn the radio on.
2. Press BAND to select FM1, FM2, AM, or XM1 or XM2.
3. Tune in the desired station. 4. Press AUTO EQ to select the equalization.
5. Press and hold one of the six numbered
pushbuttons until the radio beeps once.
6. Repeat the steps for each pushbutton.
Finding a Category (CAT) Station
(XM Satellite Radio Service Only)
To select an XM station by category: 1. Press CAT. The last selected category displays.
2. Turn the
O eknob to select a category.
3. Press
toruto go to a category's station.
SEEKING CATEGORY displays.
4. To go to another station within that category, press the CAT button to display the category, then press
toruto go to another station.
If the radio cannot find the desired category, NONE
displays and the radio returns to the last station tuned.
4-85

XM Radio Messages
XL (Explicit Language Channels) :These
channels, or any others, can be blocked by calling
1-800-852-XMXM (9696).
Updating : The encryption code in the receiver is being
updated, and no action is required. This process should
take no longer than 30 seconds.
No Signal : The system is functioning correctly, but the
vehicle is in a location that is blocking the XM signal.
When the vehicle is moved into an open area, the
signal should return.
Loading XM : The audio system is acquiring and
processing audio and text data. No action is needed.
This message should disappear shortly.
CH Off Air : This channel is not currently in service.
Tune in to another channel.
CH Unauth : This channel is blocked or cannot be
received with your XM Subscription package.
CH Unavail : This previously assigned channel is no
longer assigned. Tune to another station. If this station
was one of the presets, choose another station for that
preset button. No Info :
No artist, song title, category, or text
information is available at this time on this channel.
The system is working properly.
Not Found : There are no channels available for the
selected category. The system is working properly.
XM Locked : The XM receiver in the vehicle may
have previously been in another vehicle. For security
purposes, XM receivers cannot be swapped between
vehicles. If this message is received after having the
vehicle serviced, check with your dealer/retailer.
Radio ID : If tuned to channel 0, this message will
alternate with the XM Radio 8 digit radio ID label.
This label is needed to activate the service.
Unknown : If this message is received when tuned to
channel 0, there may be a receiver fault. Consult with
your dealer/retailer.
Chk XMRcvr : If this message does not clear within a
short period of time, the receiver may have a fault.
Consult with your dealer/retailer.
4-95

Z06, ZR1, and Grand Sport models have a
racetrack‐ready dry sump engine lubrication system.
This high‐performance system operates differently
than a standard engine lubrication system and requires
a special procedure when changing the engine oil and
filter. See Engine Oil on page 6‑19.
When the system has calculated that oil life has been
diminished, it indicates that an oil change is necessary.
A CHANGE ENGINE OIL message comes on. Change
the oil as soon as possible within the next 1 000 km
(600 miles). It is possible that, if driving under the best
conditions, the oil life system might not indicate that
an oil change is necessary for over a year. However,
the engine oil and filter must be changed at least once
a year and at this time the system must be reset.
Your dealer/retailer has trained service people who
will perform this work using genuine parts and reset
the system. It is also important to check the oil regularly
and keep it at the proper level.
If the system is ever reset accidentally, the oil must be
changed at 5 000 km (3,000 miles) since the last oil
change. Remember to reset the oil life system
whenever the oil is changed.How to Reset the Engine Oil Life
System
The Engine Oil Life System calculates when to
change the engine oil and filter based on vehicle use.
Whenever the oil is changed, reset the system so it
can calculate when the next oil change is required.
If a situation occurs where the oil is changed prior to
a CHANGE ENGINE OIL message being turned on,
reset the system.
To reset the CHANGE ENGINE OIL message after an
oil change: 1. Press the TRIP button so the OIL LIFE percentage is displayed.
2. Press RESET and hold for two seconds. OIL LIFE REMAINING 100% will appear.
If the CHANGE ENGINE OIL message comes back on
when the vehicle is started, the engine oil life system
has not reset. Repeat the procedure.
6-26

Rear Axle
When to Check Lubricant
It is not necessary to regularly check rear axle fluid
unless you suspect there is a leak or you hear an
unusual noise. A fluid loss could indicate a problem.
Have it inspected and repaired.
How to Check Lubricant
To get an accurate reading, the vehicle should be on a
level surface. If the level is below the bottom of the filler plug hole,
you will need to add some lubricant. Add enough
lubricant to raise the level to the bottom of the filler
plug hole.
What to Use
To add lubricant when the level is low, use Dexron LS
Gear Oil 75W-90 (GM Part No. US. 88862624, in
Canada 88862625) meeting GM Specification 9986290.
To completely refill after draining, see
Recommended
Fluids and Lubricants
on page 7‑10. Then fill to the
bottom of the filler plug hole with the Synthetic Gear
Lubricant.
Headlamp Aiming
Headlamp aim has been preset at the factory and
should need no further adjustment.
However, if your vehicle is damaged in a crash, the
headlamp aim may be affected. Aim adjustment to the
low-beam headlamps may be necessary if oncoming
drivers flash their high-beam headlamps at you (for
vertical aim).
If the headlamps need to be re-aimed, it is
recommended that you take the vehicle to your dealer/
retailer for service.
6-55