{CAUTION:
Your brake system may not be working
properly if the brake system warning light
is on. Driving with the brake system
warning light on can lead to an accident.
If the light is still on after you have pulled
off the road and stopped carefully, have
the vehicle towed for service.
Antilock Brake System Warning
Light
Your vehicle may have
the Antilock Brake
System (ABS).
This light will come on when your engine is started
and may stay on for several seconds. This is
normal.If the light stays on, turn the ignition to off. If the
light comes on and the chime sounds when
you are driving, stop as soon as possible and turn
the ignition off. Then start the engine again to
reset the system. If the light still stays on,
or comes on again while you are driving, your
vehicle needs service. If the regular brake system
warning light is not on, you still have brakes,
but you do not have antilock brakes. If the regular
brake system warning light is also on, you do
not have antilock brakes and there is a problem
with your regular brakes. SeeBrake System
Warning Light on page 168earlier in this section.
The ABS warning light will come on brie y
when you turn the ignition key to ON. This is
normal. If the light does not come on then, have it
xed so it will be ready to warn you if there is a
problem.
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AUTO (Automatic) LIGHTS ON
This message displays if the automatic headlamp
system is enabled with the headlamp switch.
SeeAutomatic Headlamp System on page 150for
more information.
BRAKE FLUID
This message displays, while the ignition is on,
when the brake uid level is low. The brake system
warning light on the instrument panel cluster
also comes on. SeeBrake System Warning Light
on page 168for more information. Have the
brake system serviced by your retailer as soon as
possible.
CHANGE OIL SOON
This message displays when the life of the engine
oil has expired and it should be changed.
When this message is acknowledged and cleared
from the display, the engine oil life system
must still be reset separately. SeeEngine Oil Life
System on page 268andScheduled Maintenance
on page 356for more information.
CHECK GAS CAP
This message displays if the fuel cap has not
been fully tightened. Recheck the fuel cap to make
sure that it is on properly. A few driving trips
with the cap properly installed should turn
the message off.
CHECK TIRE PRESS (Pressure)
This message displays when the tire pressure in
one or more of the tires needs to be checked. If a
tire pressure message appears on the DIC, stop as
soon as you can. Have the tire pressures checked
and set to those shown on the Tire Loading
Information label. SeeTires on page 298,Loading
Your Vehicle on page 242, andIn ation - Tire
Pressure on page 304. If the tire pressure is low,
the low tire pressure warning light comes on. See
Low Tire Pressure Warning Light on page 170.
CRUISE ENGAGED
This message displays when the cruise control
system is active. SeeCruise Control on page 145
for more information.
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SERVICE AIR BAG
This message displays when there is a problem
with the airbag system. Have your vehicle serviced
by your retailer immediately.
SERVICE ESC (ELECTRONIC STABILITY
CONTROL)
If your vehicle has Electronic Stability Control
(ESC), this message displays and a chime sounds
if there has been a problem detected with ESC.
The ESC light also appears on the instrument
panel cluster. This light stays on solid as long as
the detected problem remains present. When
this message displays, the system is not working.
Adjust your driving accordingly. SeeElectronic
Stability Control on page 219andElectronic
Stability Control Indicator Light on page 171for
more information.
If this message turns on while you are driving, pull
off the road as soon as possible and stop
carefully. Try resetting the system by turning the
ignition off and then back on. If this message
still stays on or turns back on again while you are
driving, your vehicle needs service. Have the
ESC inspected by your retailer as soon as
possible.
SERVICE HYBRID
This message displays if the hybrid components
need to be serviced. Have your vehicle serviced by
your retailer.
SERVICE TRACTION
If your vehicle has the Traction Control System
(TCS), this message displays and a chime sounds
when the system is not functioning properly.
The TCS light also appears on the instrument
panel cluster. This light stays on solid as long as
the detected problem remains present. When
this message displays, the system is not working.
Adjust your driving accordingly. SeeTraction
Control System (TCS) on page 217andTraction
Control System (TCS) Warning Light on page 170
for more information. Have the system serviced
by your retailer as soon as possible.
SRVC (Service) HILL START
This message displays if there is a problem with
the hill start assist function. Have your vehicle
serviced by your retailer.
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Electronic Stability Control
Your vehicle may have an Electronic Stability
Control (ESC) system which combines antilock
brake, traction and stability control systems
and helps the driver maintain directional control of
the vehicle in most driving conditions.
When you rst start your vehicle and begin to
drive away, the system performs several diagnostic
checks to ensure there are no problems. You
may hear or feel the system working. This
is normal and does not mean there is a problem
with your vehicle. The system should initialize
before the vehicle reaches 20 mph (32 km/h). In
some cases, it may take approximately two
miles of driving before the system initializes.
The ESC light is located
on the instrument panel
cluster.If the system fails to turn on or activate, the ESC
light will be on solid, and the ESC OFF or
SERVICE ESC message will be displayed in the
DIC. If the vehicle has gone through heavy
acceleration or braking during the rst two miles
after starting your vehicle, these messages and the
ESC light may also appear. If this is the case,
your vehicle does not need servicing. Turn your
vehicle off and back on again to reset the system.
If the SERVICE ESC message appears on the
Driver Information Center (DIC), and your vehicle
hasn’t gone through hard acceleration or
braking in the rst two miles, your vehicle should
be taken in for service.
When the ESC off light is on and either the
SERVICE ESC or ESC OFF message is displayed,
the system will not assist the driver to maintain
directional control of the vehicle. Adjust your
driving accordingly. SeeDIC Warnings and
Messages on page 182
The traction control part of ESC can be turned off
or back on by pressing the ESC button. To
disable both traction control and ESC, press and
hold the button brie y.
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If you are in an area of extreme cold, where the
temperature falls below−20°F (−29°C), it is
recommended that you use either an SAE 5W-30
synthetic oil or an SAE 0W-30 oil. Both provide
easier cold starting and better protection for
the engine at extremely low temperatures.
Engine Oil Additives
Do not add anything to the oil. The recommended
oils with the starburst symbol that meet GM
Standard GM6094M are all you need for good
performance and engine protection.
Engine Oil Life System
When to Change Engine Oil
Your vehicle has a computer system that lets you
know when to change the engine oil and lter.
This is based on engine revolutions and engine
temperature, and not on mileage. Based on driving
conditions, the mileage at which an oil change
will be indicated can vary considerably. For the oil
life system to work properly, you must reset the
system every time the oil is changed.When the system has calculated that oil life has
been diminished, it will indicate that an oil change is
necessary. A CHANGE OIL SOON message will
come on. SeeDIC Warnings and Messages on
page 182. Change the oil as soon as possible
within the next 600 miles (1 000 km). It is possible
that, if you are 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 lter 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, you must
change the oil at 3,000 miles (5 000 km) since
your last oil change. Remember to reset the oil life
system whenever the oil is changed.
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