2007 GMC ACADIA check engine

Did you just drive through a deep puddle
of water?
If so, your vehicle’s electrical system might be
wet. The condition is usually corrected when
the electrical system dries out. A few driving trips
should turn the light off.
Have you recently changed brands of fuel?
If so, be sure to fuel your vehicle with quality fuel.
SeeGasoline Octane on page 388. Poor fuel
quality causes the engine not to run as efficiently
as designed. You might notice this as stalling
after start-up, stalling when you put the vehicle
into gear, misring, hesitation on acceleration,
or stumbling on acceleration — these conditions
might go away once the engine is warmed up.
This will be detected by the system and cause
the light to turn on.
If you experience one or more of these conditions,
change the fuel brand you use. It will require at
least one full tank of the proper fuel to turn the
light off.
If none of the above steps have made the light
turn off, your dealer/retailer can check the vehicle.
Your dealer/retailer has the proper test equipment
and diagnostic tools to x any mechanical or
electrical problems that might have developed.Emissions Inspection and
Maintenance Programs
Some state/provincial and local governments have
or might begin programs to inspect the emission
control equipment on your vehicle. Failure to pass
this inspection could prevent you from getting a
vehicle registration.
Here are some things you need to know to help
your vehicle pass an inspection:
Your vehicle will not pass this inspection if the
check engine light is on or not working properly.
Your vehicle will not pass this inspection if
the OBD (on-board diagnostic) system determines
that critical emission control systems have not
been completely diagnosed by the system.
The vehicle would be considered not ready for
inspection. This can happen if you have recently
replaced the battery or if the battery has run
down. The diagnostic system is designed
to evaluate critical emission control systems
during normal driving. This can take several days
of routine driving. If you have done this and
your vehicle still does not pass the inspection for
lack of OBD system readiness, your dealer/retailer
can prepare the vehicle for inspection.
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Oil Pressure Light
{CAUTION:
Do not keep driving if the oil pressure is
low. If you do, your engine can become
so hot that it catches re. You or others
could be burned. Check your oil as soon as
possible and have your vehicle serviced.
Notice:Lack of proper engine oil maintenance
may damage the engine. The repairs would
not be covered by your warranty. Always follow
the maintenance schedule in this manual for
changing engine oil.
This light tells you if
there could be a
problem with your
engine oil pressure.The light comes on when you turn your key to ON
or START. It goes off once you start your engine.
That is a check to be sure the light works. If it does
not come on, be sure to have it xed so it will be
there to warn you if something goes wrong.
When the light comes on and stays on, it means
that oil is not owing through your engine properly.
You could be low on oil and you might have
some other system problem.
Security Light
This light ashes
when the security
system is activated.
For more information, seeTheft-Deterrent
Systems on page 118.
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AUTOMATIC LIGHT CONTROL ON
This message displays when the automatic
headlamps are turned on. This message clears
itself after 10 seconds.
BATTERY SAVER ACTIVE
This message displays when the system detects
that the battery voltage is dropping below expected
levels. The battery saver system starts reducing
certain features of the vehicle that you may be able
to notice. At the point that the features are disabled,
this message is displayed. It means that the vehicle
is trying to save the charge in the battery.
Turn off all unnecessary accessories to allow
the battery to recharge.
The normal battery voltage range is
11.5 to 15.5 volts.
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 400
for information on how to reset the message.
SeeEngine Oil on page 397andScheduled
Maintenance on page 502for more information.
CHECK TIRE PRESSURE
This message displays when the pressure in
one or more of the vehicle’s tires need to
be checked. This message also displays LEFT
FRONT, RIGHT FRONT, LEFT REAR, or
RIGHT REAR to indicate which tire needs to be
checked. You can receive more than one tire
pressure message at a time. To read the other
messages that may have been sent at the
same time, press the set/reset button or the trip
odometer reset stem. 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 435,Loading Your Vehicle
on page 361, andInflation - Tire Pressure
on page 442. The DIC display also shows the
tire pressure values for the front and rear tires by
pressing the vehicle information button. See
“DIC Operation and Displays (With DIC Buttons)”
earlier in this section. If the tire pressure is
low, the low tire pressure warning light comes on.
SeeTire Pressure Light on page 225.
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CRUISE SET TO XXX
This message displays whenever the cruise control
is set. SeeCruise Control on page 180for more
information.
DRIVER DOOR OPEN
This message displays and a chime sounds if the
driver’s door is not fully closed and the vehicle
is in a drive gear. Stop and turn off the vehicle,
check the door for obstructions, and close the door
again. Check to see if the message still appears
on the DIC.
ENGINE HOT A/C (Air Conditioning) OFF
This message displays when the engine coolant
becomes hotter than the normal operating
temperature. SeeEngine Coolant Temperature
Gage on page 225. 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.
ENGINE OIL LOW ADD OIL
If your vehicle has an oil level sensor, this
message displays if the oil level in the vehicle
is low. Check the oil level and correct it as
necessary. You may need to let the vehicle cool
or warm up and cycle the ignition to be sure
this message clears. SeeEngine Oil on page 397
for additional information.
ENGINE OVERHEATED IDLE ENGINE
Notice:If you drive your vehicle while the
engine is overheating, severe engine damage
may occur. If an overheat warning appears
on the instrument panel cluster and/or
DIC, stop the vehicle as soon as possible.
Do not increase the engine speed above
normal idling speed. SeeEngine Overheating
on page 410for more information.
This message displays when the engine coolant
temperature is too hot. Stop and allow the vehicle
to idle until it cools down. SeeEngine Coolant
Temperature Gage on page 225.
SeeOverheated Engine Protection Operating
Mode on page 412for information on driving to
a safe place in an emergency.
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OIL PRESSURE LOW STOP ENGINE
Notice:If you drive your vehicle while
the engine oil pressure is low, severe engine
damage may occur. If a low oil pressure
warning appears on the Driver Information
Center (DIC), stop the vehicle as soon as
possible. Do not drive the vehicle until the
cause of the low oil pressure is corrected. See
Engine Oil on page 397for more information.
This message displays if low oil pressure
levels occur. Stop the vehicle as soon as safely
possible and do not operate it until the cause
of the low oil pressure has been corrected.
Check the oil as soon as possible and have
your vehicle serviced by your dealer/retailer.
SeeEngine Oil on page 397.
PARK ASSIST OFF
If your vehicle has the Ultrasonic Rear Parking
Assist (URPA) system, after the vehicle has
been started and shifted out of PARK (P),
this message displays to remind the driver
that the URPA system has been turned off.Press the set/reset button or the trip odometer
reset stem to acknowledge this message and
clear it from the DIC display. To turn the URPA
system back on, seeUltrasonic Rear Parking
Assist (URPA) on page 194.
PASSENGER DOOR OPEN
This message displays and a chime sounds if
the passenger’s door is not fully closed and
the vehicle is in a drive gear. Stop and turn off
the vehicle, check the door for obstructions,
and close the door again. Check to see if the
message still appears on the DIC.
REMOTE KEY LEARNING ACTIVE
This message displays while you are matching
a Remote Keyless Entry (RKE) transmitter to
your vehicle. See “Matching Transmitter(s) to
Your Vehicle” underRemote Keyless Entry (RKE)
System Operation on page 100andDIC
Operation and Displays (With DIC Buttons) on
page 233orDIC Operation and Displays (Without
DIC Buttons) on page 239for more information.
249

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 when a non-emissions
related malfunction occurs. Have the vehicle
serviced by your dealer/retailer as soon as
possible.
SPEED LIMITED TO XXX MPH (KM/H)
This message displays when your vehicle speed
is limited to 80 mph (128 km/h) because the
vehicle detects a problem in the speed variable
assist steering system. Have your vehicle serviced
by your dealer/retailer.
STARTING DISABLED SERVICE
THROTTLE
This message displays when your vehicle’s throttle
system is not functioning properly. Have your
vehicle serviced by your dealer/retailer.
THEFT ATTEMPTED
This message displays if the content theft-deterrent
system has detected a break-in attempt while
you were away from your vehicle. SeeContent
Theft-Deterrent on page 118for more information.
TIGHTEN GAS CAP
This message may display along with the check
engine light on the instrument panel cluster if
the vehicle’s fuel cap is not tightened properly.
SeeMalfunction Indicator Lamp on page 226.
Reinstall the fuel cap fully. SeeFilling the Tank
on page 390. 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
this light and message off.
253

{CAUTION:
This system provides you with a far greater
access to audio stations and song listings.
Giving extended attention to entertainment
tasks while driving can cause a crash and
you or others can be injured or killed.
Always keep your eyes on the road and
your mind on the drive — avoid engaging
in extended searching while driving.
Keeping your mind on the drive is important for
safe driving. Here are some ways in which you
can help avoid distraction while driving.
While your vehicle is parked:
Familiarize yourself with all of its controls.
Familiarize yourself with its operation.
Set up your audio system by presetting your
favorite radio stations, setting the tone, and
adjusting the speakers. Then, when driving
conditions permit, you can tune to your favorite
radio stations using the presets and steering
wheel controls if the vehicle has them.Notice:Before adding any sound equipment
to your vehicle, such as an audio system,
CD player, CB radio, mobile telephone,
or two-way radio, make sure that it can be
added by checking with your dealer/retailer.
Also, check federal rules covering mobile radio
and telephone units. If sound equipment can
be added, it is very important to do it properly.
Added sound equipment may interfere with
the operation of your vehicle’s engine, radio,
or other systems, and even damage them.
Your vehicle’s systems may interfere with
the operation of sound equipment that
has been added.
Your vehicle has a feature called Retained
Accessory Power (RAP). With RAP, the audio
system can be played even after the ignition
is turned off. SeeRetained Accessory
Power (RAP) on page 125for more information.
265

But you will use it when you brake. Once the
power assist is used up, it can take longer to stop
and the brake pedal will be harder to push.
Adding non-dealer/non-retailer accessories can
affect your vehicle’s performance. SeeAccessories
and Modifications on page 385.
Anti-Lock Brake System (ABS)
Your vehicle has the Anti-Lock Brake System
(ABS), an advanced electronic braking system that
will help prevent a braking skid.
When you start the engine and begin to drive
away, ABS will check itself. You might hear
a momentary motor or clicking noise while this test
is going on, and you might even notice that the
brake pedal moves a little. This is normal.
If there is a problem
with ABS, this warning
light will stay on.
SeeAnti-Lock Brake
System Warning
Light on page 223.Let us say the road is wet and you are driving
safely. Suddenly, an animal jumps out in front of
you. You slam on the brakes and continue braking.
Here is what happens with ABS:
A computer senses that wheels are slowing down.
If one of the wheels is about to stop rolling, the
computer will separately work the brakes at each
wheel.
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