2010 BUICK ENCLAVE check engine light

5-20 Instruments and Controls
Light On Steady:An emission
control system malfunction has
been detected on the vehicle.
Diagnosis and service might be
required.
An emission system malfunction
might be corrected.
.Make sure the fuel cap is fully
installed. See Filling the Tankon
page 9‑42. 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.
.If the vehicle has been driven
through a deep puddle of water,
the 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.
.Make sure to fuel the vehicle
with quality fuel. 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 will require at
least one full tank of the proper
fuel to turn the light off.
See Gasoline Specifications
on
page 9‑40.
If none of the above have made the
light turn off, your dealer/retailer
can check the vehicle. The dealer/
retailer has the proper test
equipment and diagnostic tools to
fix 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 the vehicle.
Failure to pass this inspection could
prevent getting a vehicle
registration.
Here are some things to know to
help the vehicle pass an inspection:
.The vehicle will not pass this
inspection if the check engine
light is on with the engine
running, or if the key is in
ON/RUN and the light is not on.
.The vehicle will not pass this
inspection if the OBD II
(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

5-24 Instruments and Controls
Engine Oil Pressure Light
{WARNING
Do not keep driving if the oil
pressure is low. The engine can
become so hot that it catches fire.
Someone could be burned. Check
the oil as soon as possible and
have the vehicle serviced.
Notice: Lack of proper engine oil
maintenance can damage the
engine. The repairs would not be
covered by the vehicle warranty.
Always follow the maintenance
schedule in this manual for
changing engine oil.
The oil pressure light should come
on briefly as the engine is started.
If it does not come on have the
vehicle serviced by your dealer/
retailer.
If the light comes on and stays on, it
means that oil is not flowing through
the engine properly. The vehicle
could be low on oil and might have
some other system problem.
Security Light
This light flashes when the security
system is activated.
For more information, see Anti-Theft
Alarm System on page 2‑12.
High-Beam on Light
The high-beam on light comes on
when the high-beam headlamps are
in use.
See Headlamp High/Low-Beam
Changer
on page 6‑2for more
information.

Instruments and Controls 5-35
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 5‑18. Reinstall the
fuel cap fully. See Filling the Tank
on page 9‑42. 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.
Key and Lock Messages
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” under
Remote Keyless Entry (RKE)
System Operation
on page 2‑3and Driver Information Center (DIC)on page 5‑25for more information.
REPLACE BATTERY IN
REMOTE KEY
This message displays if a Remote
Keyless Entry (RKE) transmitter
battery is low. The battery needs to
be replaced in the transmitter. See
“Battery Replacement” under
Remote Keyless Entry (RKE)
System Operation on page 2‑3.
Lamp Messages
AUTOMATIC LIGHT
CONTROL OFF
This message displays when the
automatic headlamps are turned off.
This message clears itself after
10 seconds.
AUTOMATIC LIGHT
CONTROL ON
This message displays when the
automatic headlamps are turned on.
This message clears itself after
10 seconds.
TURN SIGNAL ON
This message displays and a chime
sounds if a turn signal is left on for
3/4 of a mile (1.2 km). Move the turn
signal/multifunction lever to the off
position.
Object Detection System
Messages
PARK ASSIST OFF
If your vehicle has the Ultrasonic
Rear Parking Assist (URPA) system,
after the vehicle has been started
and shifted out of P (Park), this
message displays to remind the
driver that the URPA system has
been turned off or to notify the driver
that the system has turned itself off.

9-26 Driving and Operating
Automatic Engine Grade
Braking
Automatic Engine Grade Braking
assists when driving on a downhill
grade. It maintains vehicle speed by
automatically implementing a shift
schedule that uses the engine and
the transmission to slow the vehicle.
The system will automatically
command downshifts to reduce
vehicle speed, until the brake pedal
is no longer being pressed.
While in the Electronic Range
Select (ERS) mode, grade braking
is deactivated, allowing the driver to
select a range and limiting the
highest gear available. Grade
braking is available for normal
driving and in Tow/Haul mode.
SeeAutomatic Transmission
on
page 9‑23.
Drive Systems
All-Wheel Drive
With this feature, engine power is
always sent to all four wheels. It is
fully automatic, and adjusts itself as
needed for road conditions.
When using a compact spare tire on
an AWD vehicle, the system
automatically detects the compact
spare and disables AWD. To restore
AWD operation and prevent
excessive wear on system, replace
the compact spare with a full-size
tire as soon as possible. See
Compact Spare Tire
on page 10‑80for more information.
Brakes
Antilock Brake
System (ABS)
This vehicle has the Antilock Brake
System (ABS), an advanced
electronic braking system that helps
prevent a braking skid.
When the engine is started and the
vehicle begins to drive away, ABS
checks itself. A momentary motor or
clicking noise might be heard while
this test is going on, and it might
even be noticed that the brake
pedal moves a little. This is normal.
If there is a problem with ABS, this
warning light stays on. See Antilock
Brake System (ABS) Warning Light
on page 5‑22.

Vehicle Care 10-1
Vehicle Care
General Information
General Information . . . . . . . . . . 10-2
California Proposition65 Warning . . . . . . . . . . . . . . . . . 10-3
California Perchlorate Materials Requirements . . . . 10-3
Accessories and Modifications . . . . . . . . . . . . . . . 10-3
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . . . 10-4
Hood . . . . . . . . . . . . . . . . . . . . . . . . 10-4
Engine Compartment Overview . . . . . . . . . . . . . . . . . . . 10-6
Engine Cover . . . . . . . . . . . . . . . . 10-7
Engine Oil . . . . . . . . . . . . . . . . . . . 10-8
Engine Oil Life System . . . . . 10-10
Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . 10-11
Engine Air Cleaner/Filter . . . . 10-12
Cooling System . . . . . . . . . . . . 10-14
Engine Coolant . . . . . . . . . . . . . 10-14
Engine Overheating . . . . . . . . 10-18 Overheated Engine
Protection
Operating Mode . . . . . . . . . . . 10-20
Power Steering Fluid . . . . . . . 10-20
Washer Fluid . . . . . . . . . . . . . . . 10-21
Brakes . . . . . . . . . . . . . . . . . . . . . 10-22
Brake Fluid . . . . . . . . . . . . . . . . . 10-23
Battery . . . . . . . . . . . . . . . . . . . . . 10-25
All-Wheel Drive . . . . . . . . . . . . . 10-25
Starter Switch Check . . . . . . . 10-25
Automatic Transmission Shift Lock Control System
Check . . . . . . . . . . . . . . . . . . . . . 10-26
Ignition Transmission Lock Check . . . . . . . . . . . . . . . . . . . . . 10-26
Park Brake and P (Park) Mechanism Check . . . . . . . . 10-26
Wiper Blade Replacement . . . . . . . . . . . . . . 10-27
Windshield Replacement . . . 10-28
Headlamp Aiming
Headlamp Aiming . . . . . . . . . . 10-28
Bulb Replacement
Bulb Replacement . . . . . . . . . . 10-28
Halogen Bulbs . . . . . . . . . . . . . . 10-28
High Intensity Discharge (HID) Lighting . . . . . . . . . . . . . 10-29 Taillamps, Turn Signal,
Sidemarker, and
Stoplamps . . . . . . . . . . . . . . . . 10-29
License Plate Lamp . . . . . . . . 10-30
Replacement Bulbs . . . . . . . . . 10-30
Electrical System
High Voltage Devices and Wiring . . . . . . . . . . . . . . . . . . . . . 10-30
Electrical System Overload . . . . . . . . . . . . . . . . . . 10-31
Fuses and Circuit Breakers . . . . . . . . . . . . . . . . . . 10-31
Engine Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . 10-31
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . . . 10-35
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . 10-37
Tire Sidewall Labeling . . . . . . 10-38
Tire Designations . . . . . . . . . . . 10-40
Tire Terminology and
Definitions . . . . . . . . . . . . . . . . 10-41
Tire Pressure . . . . . . . . . . . . . . . 10-44
Tire Pressure Monitor System . . . . . . . . . . . . . . . . . . . 10-45
Tire Pressure Monitor Operation . . . . . . . . . . . . . . . . . 10-46

10-12 Vehicle Care
Notice:Use of the incorrect
automatic transmission fluid may
damage the vehicle, and the
damages may not be covered by
the vehicle's warranty. Always
use the automatic transmission
fluid listed in Recommended
Fluids and Lubricants
on
page 11‑7.
The transmission fluid will not reach
the end of the dipstick unless the
transmission is at operating
temperature. If you need to check
the transmission fluid level, please
take the vehicle to your dealer/
retailer.
Engine Air Cleaner/Filter
When to Inspect the Engine Air
Cleaner/Filter
Inspect the air cleaner/filter at the
Maintenance IIintervals and replace
it at the first oil change after each
80 000 km (50,000 mile) interval.
See Scheduled Maintenance
on
page 11‑2for more information.
If you are driving in dusty/dirty
conditions, inspect the filter at each
engine oil change.
See Engine Compartment Overview
on page 10‑6for the location of the
engine air cleaner/filter.
How to Inspect the Engine Air
Cleaner/Filter
To inspect the air cleaner/filter,
remove the filter from the vehicle
and lightly shake the filter (away
from vehicle) to release loose dust
and dirt. If the filter remains caked
with dirt, a new filter is required. To inspect or replace the engine air
cleaner/filter:
1. Remove the engine cover. See
Engine Cover on page 10‑7.
A. Ventilation Tube
B. Sensor
2. Disconnect the cover fitting from the ventilation tube (A).
3. Disconnect the wiring harness connector from the sensor (B).

10-82 Vehicle Care
4. Open the hoods and locate thepositive (+) and negative (−)
terminal locations on the other
vehicle. Your vehicle has a
remote positive (+) and a remote
negative (−) jump starting
terminal. See Engine
Compartment Overview
on
page 10‑6for more information
on the terminal locations.
{WARNING
Using a match near a battery can
cause battery gas to explode.
People have been hurt doing this,
and some have been blinded.
Use a flashlight if you need more
light.
(Continued)
WARNING (Continued)
Be sure the batteries have
enough water. You do not need to
add water to the ACDelco
®
battery (or batteries) installed in
your new vehicle. But if a battery
has filler caps, be sure the right
amount of fluid is there. If it is low,
add water to take care of that
first. If you do not, explosive gas
could be present.
Battery fluid contains acid that
can burn you. Do not get it on
you. If you accidentally get it in
your eyes or on your skin, flush
the place with water and get
medical help immediately.
{WARNING
Fans or other moving engine
parts can injure you badly. Keep
your hands away from moving
parts once the engine is running.
5. Check that the jumper cables do not have loose or missing
insulation. If they do, you could
get a shock. The vehicles could
be damaged too.
Before you connect the cables,
here are some basic things you
should know. Positive (+) will go
to positive (+) or to a remote
positive (+) terminal if the vehicle
has one. Negative (−) will go to a
heavy, unpainted metal engine
part or to a remote negative (−)
terminal if the vehicle has one.

INDEX i-1
A
Accessories andModifications . . . . . . . . . . . . . . . . . 10-3
Accessory Power . . . . . . . . . . . . . . 9-17
Adaptive Forward Lighting (AFL) . . . . . . . . . . . . . . . . . 6-4
Add-On Electrical
Equipment . . . . . . . . . . . . . . . . . . . 9-55
Adding Equipment to the Airbag-Equipped Vehicle . . . . . 3-42
Adjustments
Lumbar, Front Seats . . . . . . . . . . . 3-4
Air Cleaner/Filter, Engine . . . . . 10-12
Air Vents . . . . . . . . . . . . . . . . . . . . . . . 8-9
Airbag System Check . . . . . . . . . . . . . . . . . . . . . . . . 3-43
How Does an Airbag
Restrain? . . . . . . . . . . . . . . . . . . . 3-34
Passenger Sensing System . . . . . . . . . . . . . . . . . . . . . . 3-37
What Makes an Airbag Inflate? . . . . . . . . . . . . . . . . . . . . . . 3-34 Airbag System (cont.)
What Will You See After
an Airbag Inflates? . . . . . . . . . . 3-35
When Should an Airbag
Inflate? . . . . . . . . . . . . . . . . . . . . . . 3-33
Where Are the Airbags? . . . . . . 3-31
Airbags Adding Equipment to theVehicle . . . . . . . . . . . . . . . . . . . . . . 3-42
Passenger Status Indicator . . . 5-17
Readiness Light . . . . . . . . . . . . . . 5-16
Servicing Airbag-Equipped Vehicles . . . . . . . . . . . . . . . . . . . . . 3-41
System Check . . . . . . . . . . . . . . . . 3-29
Alarm System Anti-Theft . . . . . . . . . . . . . . . . . . . . . 2-12
All-Wheel Drive . . . . . . . . . 10-25, 9-26
AM-FM Radio . . . . . . . . . . . . . . . . . . . 7-6
Antenna Multi-Band . . . . . . . . . . . . . . . . . . . . 7-11
Anti-Theft Alarm System . . . . . . . . . . . . . . . . 2-12
Alarm System Messages . . . . . 5-36 Antilock Brake
System (ABS) . . . . . . . . . . . . . . . . 9-26
Warning Light . . . . . . . . . . . . . . . . . 5-22
Appearance Care Exterior . . . . . . . . . . . . . . . . . . . . . 10-88
Interior . . . . . . . . . . . . . . . . . . . . . . 10-92
Armrest Stoarge . . . . . . . . . . . . . . . . 4-1
Assistance Program,
Roadside . . . . . . . . . . . . . . . . . . . . . 13-6
Audio Players . . . . . . . . . . . . . . . . . 7-12 CD . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-12
MP3 . . . . . . . . . . . . . . . . . . . . 7-21, 7-26
Audio System Radio Reception . . . . . . . . . . . . . . 7-11
Rear Seat (RSA) . . . . . . . . . . . . . 7-42
Theft-Deterrent Feature . . . . . . . . 7-2
Automatic Door Locks . . . . . . . . . . . . . . . . . . . . 2-8
Automatic Transmission . . . . . . . 9-23 Fluid . . . . . . . . . . . . . . . . . . . . . . . . .10-11
Manual Mode . . . . . . . . . . . . . . . . . 9-25
Shiftlock Control SystemCheck . . . . . . . . . . . . . . . . . . . . . 10-26
Auxiliary Devices . . . . . . . . . . . . . . 7-32