2015 CHEVROLET SONIC engine

Black plate (8,1)Chevrolet Sonic Owner Manual (GMNA-Localizing-U.S./Canada-7707487) -
2015 - crc - 10/31/14
5-8 Instruments and Controls
Warning Lights,
Gauges, and
Indicators
Warning lights and gauges can
signal that something is wrong
before it becomes serious enough
to cause an expensive repair or
replacement. Paying attention to the
warning lights and gauges could
prevent injury.
Warning lights come on when there
could be a problem with a vehicle
function. Some warning lights come
on briefly when the engine is started
to indicate they are working.Gauges can indicate when there
could be a problem with a vehicle
function. Often gauges and warning
lights work together to indicate a
problem with the vehicle.
When one of the warning lights
comes on and stays on while
driving, or when one of the gauges
shows there may be a problem,
check the section that explains what
to do. Waiting to do repairs can be
costly and even dangerous.

Black plate (10,1)Chevrolet Sonic Owner Manual (GMNA-Localizing-U.S./Canada-7707487) -
2015 - crc - 10/31/14
5-10 Instruments and Controls
Speedometer
The speedometer shows the
vehicle's speed in either kilometers
per hour (km/h) or miles per
hour (mph).
Odometer
The odometer shows how far the
vehicle has been driven, in either
kilometers or miles.
Trip Odometer
The trip odometer shows how far
the vehicle has been driven since
the trip odometer was last reset.
Press the trip odometer reset stem
on the cluster to switch between the
odometer and trip odometer.
To reset the trip odometer to zero,
press and hold the trip odometer
reset stem while the trip odometer is
displayed. Be careful not to reset
the engine oil life monitor
accidentally.
Tachometer
The tachometer displays the engine
speed in revolutions per
minute (rpm).
{Caution
If the engine is operated with the
rpm’s in the warning area at the
high end of the tachometer, the
vehicle could be damaged, and
the damage would not be covered(Continued)
Caution (Continued)
by the vehicle warranty. Do not
operate the engine with the rpm’s
in the warning area.
Fuel Gauge
The fuel gauge indicates about how
much fuel is left when the ignition is
turned to ON/RUN.
When the tank nears empty, the low
fuel warning light will come on.
There is still a little fuel left, but the

Black plate (13,1)Chevrolet Sonic Owner Manual (GMNA-Localizing-U.S./Canada-7707487) -
2015 - crc - 10/31/14
Instruments and Controls 5-13
as a system check. Then, after
several seconds, the status
indicator will light either ON or OFF,
or the on or off symbol to let you
know the status of the front
outboard passenger frontal airbag
and knee airbag.
If the word ON or the on symbol is
lit on the passenger airbag status
indicator, it means that the front
outboard passenger frontal airbag
and knee airbag are allowed to
inflate.
If the word OFF or the off symbol is
lit on the passenger airbag status
indicator, it means that the
passenger sensing system has
turned off the front outboard
passenger frontal airbag and knee
airbag.
If, after several seconds, both status
indicator lights remain on, or if there
are no lights at all, there may be a
problem with the lights or the
passenger sensing system. See
your dealer for service.{Warning
If the airbag readiness light ever
comes on and stays on, it means
that something may be wrong
with the airbag system. To help
avoid injury to yourself or others,
have the vehicle serviced right
away. SeeAirbag Readiness
Light on page 5-12 for more
information, including important
safety information.
Charging System Light
This light will come on briefly when
the ignition is turned on, and the
engine is not running, as a check to
show it is working. It should go out when the engine is
started. If it stays on, or comes on
while driving, there may be a
problem with the electrical charging
system. Have it checked by your
dealer. Driving while this light is on
could drain the battery. If a short
distance must be driven with the
light on, turn off all accessories,
such as the radio and air
conditioner, to help reduce the drain
on the battery.
Malfunction
Indicator Lamp
A computer system called OBD II
(On-Board Diagnostics-Second
Generation) monitors the operation
of the vehicle to ensure emissions
are at acceptable levels, helping to
maintain a clean environment. The
malfunction indicator lamp comes
on when the vehicle is placed in
ON/RUN, as a check to show it is
working. If it does not, have the
vehicle serviced by your dealer. See
Ignition Positions on page 9-13
for
more information.

Black plate (14,1)Chevrolet Sonic Owner Manual (GMNA-Localizing-U.S./Canada-7707487) -
2015 - crc - 10/31/14
5-14 Instruments and Controls
If the malfunction indicator lamp
comes on while the engine is
running, this indicates that the OBD
II system has detected a problem
and diagnosis and service might be
required.
Malfunctions often are indicated by
the system before any problem is
apparent. Being aware of the light
can prevent more serious damage
to the vehicle. This system also
assists the service technician in
correctly diagnosing any
malfunction.
{Caution
If the vehicle is continually driven
with this light on, the emission
controls might not work as well,(Continued)
Caution (Continued)
the vehicle fuel economy might
not be as good, and the engine
might not run as smoothly. This
could lead to costly repairs that
might not be covered by the
vehicle warranty.
{Caution
Modifications made to the engine,
transmission, exhaust, intake,
or fuel system of the vehicle or
the replacement of the original
tires with other than those of the
same Tire Performance Criteria
(TPC) can affect the vehicle's
emission controls and can cause
this light to come on.
Modifications to these systems
could lead to costly repairs not
covered by the vehicle warranty.
This could also result in a failure(Continued)
Caution (Continued)
to pass a required Emission
Inspection/Maintenance test. See
Accessories and Modifications on
page 10-3.
This light comes on during a
malfunction in one of two ways:
Light Flashing: A misfire condition
has been detected. A misfire
increases vehicle emissions and
could damage the emission control
system on the vehicle. Diagnosis
and service might be required.
To prevent more serious damage to
the vehicle:
.Reduce vehicle speed.
.Avoid hard accelerations.
.Avoid steep uphill grades.
If the light continues to flash, find a
safe place to stop and park the
vehicle. Turn the vehicle off, wait at
least 10 seconds, and restart the
engine. If the light is still flashing,

Black plate (15,1)Chevrolet Sonic Owner Manual (GMNA-Localizing-U.S./Canada-7707487) -
2015 - crc - 10/31/14
Instruments and Controls 5-15
follow the previous steps and see
your dealer for service as soon as
possible.
Light On Steady:An emission
control system malfunction has
been detected on the vehicle.
Diagnosis and service might be
required.
The following may correct an
emission control system
malfunction:
.Check that the fuel cap is fully
installed. See Filling the Tank on
page 9-39. The diagnostic
system can determine if the fuel
cap has been left off or
improperly installed. A loose or
missing fuel cap allows fuel to
evaporate into the atmosphere.
A few driving trips with the cap
properly installed should turn the
light off.
.Check that good quality fuel is
used. Poor fuel quality causes
the engine not to run as
efficiently as designed and may
cause stalling after start-up, stalling when the vehicle is
changed into gear, misfiring,
hesitation on acceleration,
or stumbling on acceleration.
These conditions might go away
once the engine is warmed up.
If one or more of these conditions
occurs, change the fuel brand used.
It may require at least one full tank
of the proper fuel to turn the light off.
See Fuel on page 9-38.
If none of the above have made the
light turn off, your dealer can check
the vehicle. The dealer has the
proper test equipment and
diagnostic tools to fix any
mechanical or electrical problems
that might have developed.
Emissions Inspection and
Maintenance Programs
Depending on where you live, your
vehicle may be required to
participate in an emission control
system inspection and maintenance
program. For the inspection, the emission system test equipment will
likely connect to the vehicle's Data
Link Connector (DLC).
The DLC is under the instrument
panel to the left of the steering
wheel. See your dealer if assistance
is needed.
The vehicle may not pass
inspection if:
.The malfunction indicator lamp is
on with the engine running, or if
the light does not come on when
the ignition is turned to ON/RUN
while the engine is off. See your
dealer for assistance in verifying
proper operation of the
malfunction indicator lamp.
.The OBD II (On-Board
Diagnostics) system determines
that critical emission control

Black plate (17,1)Chevrolet Sonic Owner Manual (GMNA-Localizing-U.S./Canada-7707487) -
2015 - crc - 10/31/14
Instruments and Controls 5-17
This light should come on briefly
when the ignition is turned to ON.
If it does not come on then, have it
fixed so it will be ready to warn if
there is a problem.
When the ignition is on, the brake
system warning light will also come
on when the parking brake is set.
The light will stay on if the parking
brake does not fully release. If it
stays on after the parking brake is
fully released, it means there is a
brake problem.
If the light comes on while driving,
carefully pull off the road and stop.
The pedal may be harder to push or
may go closer to the floor. It may
take longer to stop. If the light is still
on, have the vehicle towed for
service. SeeTowing the Vehicle on
page 10-78.Antilock Brake System
(ABS) Warning Light
This light comes on briefly when the
engine is started.
If the light stays on, turn the ignition
to LOCK/OFF or if the light comes
on, 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 driving, the vehicle
needs service. See your dealer.
If the regular brake system warning
light is not on, the brakes will still
work, but the antilock brakes will not
work. If the regular brake system
warning light is also on, the antilock
brakes will not work and there is a problem with the regular brakes.
See
Brake System Warning Light on
page 5-16.
The ABS warning light will come on
briefly when the ignition is turned to
ON/RUN. This is normal. If the light
does not come on then, have it fixed
so it will be ready to warn if there is
a problem.Up-Shift Light
For manual transmission vehicles,
there is an up-shift light that comes
on in the lower DIC area. It shows
when to shift to the next higher gear
for best fuel economy.
See Manual Transmission on
page 9-24.

Black plate (19,1)Chevrolet Sonic Owner Manual (GMNA-Localizing-U.S./Canada-7707487) -
2015 - crc - 10/31/14
Instruments and Controls 5-19
Vehicle Ahead Indicator
If equipped, this indicator will
display green when a vehicle is
detected ahead
SeeForward Collision Alert (FCA)
System on page 9-32.
Traction Off Light
This light comes on briefly while
starting the engine. If it does not,
have the vehicle serviced by your dealer. If the system is working
normally, the indicator light then
turns off.
The traction off light comes on when
the Traction Control System (TCS)
has been turned off by pressing and
releasing the TCS/StabiliTrak
button.
This light and the StabiliTrak OFF
light come on when StabiliTrak is
turned off.
If the TCS is off, wheel spin is not
limited. Adjust driving accordingly.
See
Traction Control/Electronic
Stability Control on page 9-28.
StabiliTrak®OFF Light
This light comes on briefly while
starting the engine. If it does not,
have the vehicle serviced by your
dealer.
This light comes on when the
StabiliTrak system is turned off.
If StabiliTrak is off, the Traction
Control System (TCS) is also off.
If the StabiliTrak and TCS are off,
the system does not assist in
controlling the vehicle. Turn on the
TCS and the StabiliTrak systems
and the warning light turns off.
See Traction Control/Electronic
Stability Control on page 9-28.
Traction Control System
(TCS)/StabiliTrak®Light

Black plate (20,1)Chevrolet Sonic Owner Manual (GMNA-Localizing-U.S./Canada-7707487) -
2015 - crc - 10/31/14
5-20 Instruments and Controls
The StabiliTrak or Traction Control
System (TCS) indicator/warning
light comes on briefly when the
engine is started.
If the light does not come on, have
the vehicle serviced by your dealer.
If the system is working normally,
the indicator light turns off.
If the light is on and not flashing, the
TCS, and potentially the StabiliTrak
system have been disabled.
If the indicator/warning light is on
and flashing, the TCS and/or the
StabiliTrak system is actively
working.
SeeTraction Control/Electronic
Stability Control on page 9-28.Engine Coolant
Temperature Warning
Light
This light comes on briefly while
starting the vehicle.
If it does not, have the vehicle
serviced by your dealer. If the
system is working normally the
indicator light goes off.
{Caution
The engine coolant temperature
warning light indicates that the
vehicle has overheated. Driving
with this light on can damage the
engine and it may not be covered
(Continued)
Caution (Continued)
by the vehicle warranty. See
Engine Overheating on
page 10-20.
The engine coolant temperature
warning light comes on when the
engine has overheated.
If this happens, pull over and turn
off the engine as soon as possible.
See Engine Overheating on
page 10-20.
Tire Pressure Light