OnStar Turn by Turn
This display is used for the OnStar
Turn by Turn guidance. SeeOnStar
®
System on page 4-42for more
information.
Blank Display
This display shows no information.
Vehicle Information
Menu Items
Press the MENU button on the
turn signal lever until Vehicle
Information Menu is displayed.
Use the thumbwheel to scroll
through the following menu items:
•Unit
•Tire Pressure
•Remaining Oil Life
•Coolant Temp
•Battery Voltage
•Speed WarningUnit
Move the thumbwheel up or down to
switch between US or Metric when
the Unit display is active. Press SET
to confirm the setting. This will
change the displays on the cluster
and DIC to either English (US) or
metric measurements.
Tire Pressure
The display will show a vehicle with
the approximate pressures of all
four tires. Tire pressure is displayed
in either pounds per square
inch (psi) or in kilopascal (kPa).
SeeTire Pressure Monitor System
on page 9-56andTire Pressure
Monitor Operation on page 9-57
for more information.
Remaining Oil Life
This display shows an estimate
of the oil’s remaining useful life.
If Remaining Oil Life 99% is
displayed, that means 99% of
the current oil life remains.When the remaining oil life is low,
the CHANGE ENGINE OIL SOON
message will appear on the
display. SeeEngine Oil Messages
on page 4-32. The oil should
changed as soon as possible.
SeeEngine Oil on page 9-10.
In addition to the engine oil life
system monitoring the oil life,
additional maintenance is
recommended in the Maintenance
Schedule in this manual.
SeeScheduled Maintenance on
page 10-2for more information.
Remember, the Oil Life display
must be reset after each oil change.
It will not reset itself. Also, be
careful not to reset the Oil Life
display accidentally at any time
other than when the oil has
just been changed. It cannot be
reset accurately until the next
oil change. To reset the engine oil
life system press the SET button
while the Oil Life display is active.
SeeEngine Oil Life System on
page 9-13.
Instruments and Controls 4-29
Engine Cooling System
Messages
A/C Off Due to High
Engine Temp
This message displays when the
engine coolant becomes hotter than
the normal operating temperature.
To avoid added strain on a hot
engine, the air conditioning
compressor automatically turns off.
When the coolant temperature
returns to normal, the air conditioning
compressor turns back on. You can
continue to drive your vehicle.
If this message continues to appear,
have the system repaired by your
dealer/retailer as soon as possible
to avoid damage to the engine.
Coolant Level Low Add
Coolant
This message will display if the
coolant is low, seeEngine Coolant
on page 9-19.
Engine Overheated — Idle
Engine
This message displays when the
engine coolant temperature is
too hot. Stop and allow the vehicle
to idle until it cools down.
Engine Overheated — Stop
Engine
This message displays and a
continuous chime sounds if the
engine cooling system reaches
unsafe temperatures for operation.
Stop and turn off the vehicle as
soon as it is safe to do so to avoid
severe damage. This message
clears when the engine has cooled
to a safe operating temperature.
High Coolant Temperature
This message displays if the coolant
temperature is hot, seeEngine
Overheating on page 9-24.
Engine Oil Messages
Change Engine Oil Soon
This message displays when the
engine oil needs to be changed.
When you change the engine oil,
be sure to reset the CHANGE
ENGINE OIL SOON message.
SeeEngine Oil Life System
on page 9-13andDriver Information
Center (DIC) on page 4-27for
information on how to reset
the message. SeeEngine Oil
on page 9-10andScheduled
Maintenance on page 10-2for
more information.
Engine Oil Hot, Idle Engine
This message displays when
the engine oil temperature is too
hot. Stop and allow the vehicle
to idle until it cools down.
Engine Oil Low – Add Oil
This message displays when
the engine oil level is too low.
Check the oil level. SeeEngine Oil
on page 9-10.
4-32 Instruments and Controls
The compact spare tire, if the
vehicle has one, is not included
in the tire rotation.
After the tires have been rotated,
adjust the front and rear inflation
pressures as shown on the Tire
and Loading Information label.
SeeTire Pressure on page 9-54
andVehicle Load Limits on
page 8-12.
Reset the Tire Pressure Monitor
System. SeeTire Pressure
Monitor Operation on page 9-57.
Make certain that all wheel
nuts are properly tightened.
See “Wheel Nut Torque” under
Capacities and Speci cations on
page 11-2.{WARNING
Rust or dirt on a wheel, or on the
parts to which it is fastened, can
make wheel nuts become loose
after time. The wheel could come
off and cause an accident. When
changing a wheel, remove any
rust or dirt from places where the
wheel attaches to the vehicle.
In an emergency, use a cloth or
a paper towel to do this; but be
sure to use a scraper or wire
brush later, if needed, to get all
the rust or dirt off. SeeIf a Tire
Goes Flat on page 9-69.
When It Is Time for
New Tires
Various factors, such as
maintenance, temperatures,
driving speeds, vehicle loading,
and road conditions influence
when you need new tires.
One way to tell when it is time for
new tires is to check the treadwear
indicators, which appear when the
tires have only 1/16 inch (1.6 mm)
or less of tread remaining.
9-62 Vehicle Care
At your General Motors dealer/
retailer, you can be certain that
you will receive the highest level
of service available. Your dealer
/retailer has specially trained service
technicians, uses genuine GM
replacement parts, as well as, up to
date tools and equipment to ensure
fast and accurate diagnostics.
The proper replacement parts,
fluids, and lubricants to use are
listed inRecommended Fluids
and Lubricants on page 10-7and
Maintenance Replacement Parts on
page 10-9. We recommend the use
of genuine parts from your dealer/
retailer.
Rotation of New Tires
Tire rotation is not recommended if
the vehicle has different size tires
on the front and rear wheels. If tire
rotation is recommended for the
vehicle, to maintain ride, handling,
and performance of the vehicle,
it is important that the first rotation
service for new tires be performed
when they have 8 000 to 13 000 km
(5,000 to 8,000 miles). SeeTire
Rotation on page 9-61.Scheduled
Maintenance
When the Change Engine Oil
Soon Message Displays
Change engine oil and filter.
SeeEngine Oil on page 9-10.
An Emission Control Service.
When the Change Engine Oil
Soon message displays, service is
required for the vehicle as soon as
possible, within the next 1 000 km/
600 miles. If driving under the best
conditions, the engine oil life system
might not indicate the need for
vehicle service for more than a year.
The engine oil and filter must be
changed at least once a year and the
oil life system must be reset. Your
dealer/retailer has trained service
technicians who will perform this
work and reset the system.If the engine oil life system is reset
accidentally, service the vehicle
within 5 000 km/3,000 miles since
the last service. Reset the oil life
system whenever the oil is changed.
SeeEngine Oil Life System on
page 9-13.
When the Change Engine Oil
Soon message displays, certain
services, checks, and inspections
are required. The services described
for MaintenanceIshould be
performed at every engine oil
change. The services described
for MaintenanceIIshould be
performed when:
•MaintenanceIwas performed
the last time the engine oil was
changed.
•It has been 10 months or more
since the Change Engine Oil
Soon message has displayed
or since the last service.
10-2 Service and Maintenance
ServiceMaintenanceIMaintenance II
Change engine oil and filter. Reset oil life system. ••
Engine coolant level check. ••
Windshield washer fluid level check. ••
Tire inflation pressures check. ••
Tire wear inspection. ••
If tire rotation is recommended for the vehicle, rotate tires. ••
Fluids visual leak check. ••
Engine air cleaner filter inspection (vehicles driven in dusty conditions only). ••
Brake system inspection. ••
Steering and suspension inspection. •
Engine cooling system inspection. •
Windshield wiper blades inspection. •
Body components lubrication. •
Restraint system components check. •
Automatic transmission fluid level check. •
Rear axle fluid level check. •
Engine air cleaner filter inspection (vehicles not driven in dusty conditions). •
Passenger compartment air filter replacement. •
10-6 Service and Maintenance