
Black plate (9,1)Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7576024) - 2015 - CRC - 9/15/14
Service and Maintenance 11-9
The following list is intended to
explain the services and conditions
to look for that may indicate
services are required.
Battery
The battery supplies power to start
the engine and operate any
additional electrical accessories.
.To avoid break-down or failure to
start the vehicle, maintain a
battery with full cranking power.
.Trained dealer technicians have
the diagnostic equipment to test
the battery and ensure that the
connections and cables are
corrosion-free.Belts
.Belts may need replacing if they
squeak or show signs of
cracking or splitting.
.Trained dealer technicians have
access to tools and equipment
to inspect the belts and
recommend adjustment or
replacement when necessary.
Brakes
Brakes stop the vehicle and are
crucial to safe driving.
.Signs of brake wear may include
chirping, grinding, or squealing
noises, or difficulty stopping.
.Trained dealer technicians have
access to tools and equipment
to inspect the brakes and
recommend quality parts
engineered for the vehicle. Fluids
Proper fluid levels and approved
fluids protect the vehicle’s systems
and components. See
Recommended Fluids and
Lubricants on page 11-12
for GM
approved fluids.
.Engine oil and windshield
washer fluid levels should be
checked at every fuel fill.
.Instrument cluster lights may
come on to indicate that fluids
may be low and need to be
filled.
Hoses
Hoses transport fluids and should
be regularly inspected to ensure
that there are no cracks or leaks.
With a multi-point inspection, your
dealer can inspect the hoses and
advise if replacement is needed.

Black plate (1,1)Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7576024) - 2015 - CRC - 9/15/14
Technical Data 12-1
Technical Data
Vehicle Identification
Vehicle IdentificationNumber (VIN) . . . . . . . . . . . . . . 12-1
Service Parts Identification Label . . . . . . . . . . . . . . . . . . . . . . . 12-1
Vehicle Data
Capacities andSpecifications . . . . . . . . . . . . . . 12-2
Engine Drive Belt Routing . . . 12-4
Vehicle Identification
Vehicle Identification
Number (VIN)
This legal identifier is in the front
corner of the instrument panel, on
the left side of the vehicle. It can be
seen through the windshield from
outside. The VIN also appears on
the Vehicle Certification and Service
Parts labels and certificates of title
and registration.
Engine Identification
The eighth character in the VIN is
the engine code. This code
identifies the vehicle's engine,
specifications, and replacement
parts. See “Engine Specifications”
under Capacities and Specifications
on page 12-2 for the vehicle's
engine code.
Service Parts
Identification Label
This label, in either the glove box or
the trunk area, has the following
information:
.Vehicle Identification
Number (VIN).
.Model designation.
.Paint information.
.Production options and special
equipment.
Do not remove this label from the
vehicle.

Black plate (4,1)Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7576024) - 2015 - CRC - 9/15/14
12-4 Technical Data
Engine Drive Belt Routing
2.0L Engine
2.4L LUK Engine
Belt removal and installation
requires special tools. See your
dealer for service.2.4L LEA Engine

Black plate (14,1)Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7576024) - 2015 - CRC - 9/15/14
13-14 Customer Information
Vehicle Data
Recording and
Privacy
The vehicle has a number of
computers that record information
about the vehicle’s performance and
how it is driven. For example, the
vehicle uses computer modules to
monitor and control engine and
transmission performance, to
monitor the conditions for airbag
deployment and deploy them in a
crash, and, if equipped, to provide
antilock braking to help the driver
control the vehicle. These modules
may store data to help the dealer
technician service the vehicle.
Some modules may also store data
about how the vehicle is operated,
such as rate of fuel consumption or
average speed. These modules may
retain personal preferences, such as
radio presets, seat positions, and
temperature settings.
Event Data Recorders
This vehicle is equipped with an
event data recorder (EDR). The
main purpose of an EDR is to
record, in certain crash or near
crash-like situations, such as an air
bag deployment or hitting a road
obstacle, data that will assist in
understanding how a vehicle’s
systems performed. The EDR is
designed to record data related to
vehicle dynamics and safety
systems for a short period of time,
typically 30 seconds or less. The
EDR in this vehicle is designed to
record such data as:
.How various systems in your
vehicle were operating;
.Whether or not the driver and
passenger safety belts were
buckled/fastened;
.How far (if at all) the driver was
depressing the accelerator and/
or brake pedal; and,
.How fast the vehicle was
traveling.These data can help provide a
better understanding of the
circumstances in which crashes and
injuries occur. NOTE: EDR data are
recorded by your vehicle only if a
non-trivial crash situation occurs; no
data are recorded by the EDR under
normal driving conditions and no
personal data (e.g., name, gender,
age, and crash location) are
recorded. However, other parties,
such as law enforcement, could
combine the EDR data with the type
of personally identifying data
routinely acquired during a crash
investigation.
To read data recorded by an EDR,
special equipment is required, and
access to the vehicle or the EDR is
needed. In addition to the vehicle
manufacturer, other parties, such as
law enforcement, that have the
special equipment, can read the
information if they have access to
the vehicle or the EDR.

Black plate (3,1)Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7576024) - 2015 - CRC - 9/15/14
INDEX i-3
CompartmentsStorage . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Compass . . . . . . . . . . . . . . . . . . . . . . . 5-4 Messages . . . . . . . . . . . . . . . . . . . . 5-39
Compressor Kit, Tire Sealant . . . . . . . . . . . . . . . . . . . . . . 10-64
Connections
OnStar
®. . . . . . . . . . . . . . . . . . . . . . 14-4
Control Traction and ElectronicStability . . . . . . . . . . . . . . . . . . . . . 9-35
Control of a Vehicle . . . . . . . . . . . . . 9-3
Convenience Net . . . . . . . . . . . . . . . 4-3
Convex Mirrors . . . . . . . . . . . . . . . . 2-18
Coolant Engine . . . . . . . . . . . . . . . . . . . . . . 10-19
Engine Temperature
Gauge . . . . . . . . . . . . . . . . . . . . . . 5-17
Engine Temperature Warning Light . . . . . . . . . . . . . . . 5-27
Cooling System . . . . . . . . . . . . . . . 10-18
Engine Messages . . . . . . . . . . . . 5-41
Courtesy Transportation Program . . . . . . . . . . . . . . . . . . . . . . 13-7 Cruise Control . . . . . . . . . . . . . . . . . 9-38
Light . . . . . . . . . . . . . . . . . . . . . . . . . . 5-30
Messages . . . . . . . . . . . . . . . . . . . . 5-39
Cruise Control, Active . . . . . . . . . 9-40
Cupholders . . . . . . . . . . . . . . . . . . . . . 4-1
Customer Assistance . . . . . . . . . . 13-4 Offices . . . . . . . . . . . . . . . . . . . . . . . . 13-3
Text Telephone (TTY)
Users . . . . . . . . . . . . . . . . . . . . . . . 13-4
Customer Information Service Publications
Ordering Information . . . . . . .13-11
Customer Satisfaction Procedure . . . . . . . . . . . . . . . . . . . . 13-1
D
Damage Repair, Collision . . . . . . 13-8
Danger, Warnings, andCautions . . . . . . . . . . . . . . . . . . . . . . . . iv
Data Recorders, Event . . . . . . . 13-14
Daytime Running Lamps (DRL) . . . . . . . . . . . . . . . . . . 6-2
Defensive Driving . . . . . . . . . . . . . . . 9-3
Delayed Locking . . . . . . . . . . . . . . . 2-11
Distracted Driving . . . . . . . . . . . . . . . 9-2
Dome Lamps . . . . . . . . . . . . . . . . . . . 6-5 Door
Ajar Light . . . . . . . . . . . . . . . . . . . . . 5-30
Ajar Messages . . . . . . . . . . . . . . . 5-40
Delayed Locking . . . . . . . . . . . . . . 2-11
Locks . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
Power Locks . . . . . . . . . . . . . . . . . . 2-11
Drive Belt Routing, Engine . . . . . 12-4
Drive Systems
All-Wheel Drive . . . . . . . 9-31, 10-27
Driver Assistance Systems . . . . 9-48
Driver Information Center (DIC) . . . . . . . . . . . 5-32, 5-35
Driving Assistance Systems . . . . . . . . . . 9-51
Defensive . . . . . . . . . . . . . . . . . . . . . . 9-3
Drunk . . . . . . . . . . . . . . . . . . . . . . . . . . 9-3
For Better Fuel Economy . . . . . 1-22
Hill and Mountain Roads . . . . . . . 9-7
If the Vehicle is Stuck . . . . . . . . . . 9-9
Loss of Control . . . . . . . . . . . . . . . . 9-5
Off-Road Recovery . . . . . . . . . . . . 9-5
Track Events andCompetitive . . . . . . . . . . . . . . . . . . 9-6
Vehicle Load Limits . . . . . . . . . . . 9-10
Wet Roads . . . . . . . . . . . . . . . . . . . . 9-6
Winter . . . . . . . . . . . . . . . . . . . . . . . . . 9-8

Black plate (4,1)Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7576024) - 2015 - CRC - 9/15/14
i-4 INDEX
Dual Automatic ClimateControl System . . . . . . . . . . . . . . . . 8-1
E
E85 or FlexFuel . . . . . . . . . . . . . . . 9-61
Electric Parking Brake Light . . . 5-24
Electrical Equipment,
Add-On . . . . . . . . . . . . . . . . . . . . . . 9-65
Electrical System
Engine CompartmentFuse Block . . . . . . . . . . . . . . . . 10-35
Fuses and Circuit Breakers . . . . . . . . . . . . . . . . . . 10-35
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . . . . 10-39
Overload . . . . . . . . . . . . . . . . . . . 10-34
Emergency OnStar
®. . . . . . . . . . . . . . . . . . . . . . 14-2
Energy Information . . . . . . . . . . . . 5-32
Engine Air Cleaner/Filter . . . . . . . . . . . 10-16
Check and Service EngineSoon Light . . . . . . . . . . . . . . . . . . 5-20
Compartment Overview . . . . . . . 10-6
Coolant . . . . . . . . . . . . . . . . . . . . . 10-19 Engine (cont'd)
Coolant Temperature
Gauge . . . . . . . . . . . . . . . . . . . . . . 5-17
Coolant Temperature
Warning Light . . . . . . . . . . . . . . . 5-27
Cooling System . . . . . . . . . . . . . 10-18
Cooling System Messages . . . 5-41
Drive Belt Routing . . . . . . . . . . . . 12-4
Exhaust . . . . . . . . . . . . . . . . . . . . . . 9-25
Heater . . . . . . . . . . . . . . . . . . . . . . . . 9-21
Oil Life System . . . . . . . . . . . . . 10-13
Oil Messages . . . . . . . . . . . . . . . . . 5-41
Overheating . . . . . . . . . . . . . . . . 10-22
Power Messages . . . . . . . . . . . . . 5-42
Pressure Light . . . . . . . . . . . . . . . . 5-28
Running While Parked . . . . . . . . 9-26
Starting . . . . . . . . . . . . . . . . . . . . . . . 9-18
Entry Lighting . . . . . . . . . . . . . . . . . . . 6-6
Event Data Recorders . . . . . . . . 13-14
Exit Lighting . . . . . . . . . . . . . . . . . . . . 6-6
Extender, Safety Belt . . . . . . . . . . 3-16
Exterior Lamp Controls . . . . . . . . . 6-1
Exterior Lamps Off Reminder . . . 6-1
F
Features
Memory . . . . . . . . . . . . . . . . . . . . . . . . 1-8
Filter, Engine Air Cleaner . . . . . . . . . 10-16
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 6-2
Flashers, Hazard Warning . . . . . . 6-3
Flat Tire . . . . . . . . . . . . . . . . . . . . . . 10-62 Changing . . . . . . . . . . . . . . . . . . . 10-71
FlexFuel E85 . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-61
Floor Mats . . . . . . . . . . . . . . . . . . . . 10-93
Fluid Automatic Transmission . . . . 10-15
Brakes . . . . . . . . . . . . . . . . . . . . . . 10-25
Washer . . . . . . . . . . . . . . . . . . . . . 10-23
Fog Lamps . . . . . . . . . . . . . . . . . . . . . 6-4 Bulb Replacement . . . . . . . . . . 10-32
Folding Mirrors . . . . . . . . . . . . . . . . 2-19
Forward Collision Alert (FCA) System . . . . . . . . . . . . . . . . 9-52
Frequency Statement Radio . . . . . . . . . . . . . . . . . . . . . . . 13-12
Front Fog Lamp Light . . . . . . . . . . . . . . . . . . . . . . . . . . 5-29

Black plate (6,1)Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7576024) - 2015 - CRC - 9/15/14
i-6 INDEX
Hill and Mountain Roads . . . . . . . . 9-7
Hill Start Assist (HSA) . . . . . . . . . 9-34
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . 10-5
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
How to Wear Safety BeltsProperly . . . . . . . . . . . . . . . . . . . . . . 3-12
Hydraulic Clutch . . . . . . . . . . . . . . 10-15
I
Ignition Positions . . . . . . . . 9-15, 9-16
Ignition Transmission Lock
Check . . . . . . . . . . . . . . . . . . . . . . . 10-29
Immobilizer . . . . . . . . . . . . . . . . . . . . 2-17
Indicator
Vehicle Ahead . . . . . . . . . . . . . . . . 5-26
Infants and Young Children, Restraints . . . . . . . . . . . . . . . . . . . . 3-32
Information
Energy . . . . . . . . . . . . . . . . . . . . . . . 5-32
Infotainment . . . . . . . . . . . . . . . . . . . . 7-1
Infotainment System . . . . . . . . . . 13-15
Instrument Cluster . . . . . . . . 5-8, 5-12
Instrument Panel Storage Area . . . . . . . . . . . . . . . . . . 4-1
Interior Rearview Mirrors . . . . . . . 2-19
Introduction . . . . . . . . . . . . . . . . . . . . . . . iii
J
Jump Starting . . . . . . . . . .10-77, 10-78
K
Key and Lock Messages . . . . . . . 5-42
Keyless Entry Remote (RKE) System . . . . . . . . 2-3
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
L
Labeling, Tire Sidewall . . . . . . . . 10-42
Lamps Daytime Running (DRL) . . . . . . . 6-2
Dome . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5
Exterior Controls . . . . . . . . . . . . . . . 6-1
Exterior Lamps OffReminder . . . . . . . . . . . . . . . . . . . . 6-1
Fog . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
Headlamps, Front Turn Signal, and Parking
Lamps . . . . . . . . . . . . . . . . . . . . 10-31
License Plate . . . . . . . . . . . . . . . 10-32 Lamps (cont'd)
Malfunction Indicator . . . . . . . . . 5-20
On Reminder . . . . . . . . . . . . . . . . . 5-30
Reading . . . . . . . . . . . . . . . . . . . . . . . 6-5
Lane Change Alert . . . . . . . . . . . . 9-56
Lane Departure Warning (LDW) . . . . . . . . . . . . . . . 9-58
Lane Departure Warning Light . . . . . . . . . . . . . . . . . . . . . . . . . 5-25
Lap-Shoulder Belt . . . . . . . . . . . . . 3-13
LATCH System Replacing Parts after aCrash . . . . . . . . . . . . . . . . . . . . . . . 3-45
LATCH, Lower Anchors and
Tethers for Children . . . . . . . . . . 3-37
Lighter, Cigarette . . . . . . . . . . . . . . . 5-6
Lighting Entry . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6
Exit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6
Illumination Control . . . . . . . . . . . . 6-5
Lights Airbag Readiness . . . . . . . . . . . . . 5-18
Antilock Brake System(ABS) Warning . . . . . . . . . . . . . . 5-24
Brake System Warning . . . . . . . 5-23
Charging System . . . . . . . . . . . . . 5-20
Cruise Control . . . . . . . . . . . . . . . . 5-30

Black plate (7,1)Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7576024) - 2015 - CRC - 9/15/14
INDEX i-7
Lights (cont'd)Door Ajar . . . . . . . . . . . . . . . . . . . . . 5-30
Electric Parking Brake . . . . . . . . 5-24
Engine Coolant
Temperature Warning . . . . . . . 5-27
Engine Oil Pressure . . . . . . . . . . 5-28
Flash-to-Pass . . . . . . . . . . . . . . . . . . 6-2
Front Fog Lamp . . . . . . . . . . . . . . 5-29
High-Beam On . . . . . . . . . . . . . . . . 5-29
High/Low Beam Changer . . . . . . 6-2
Lane Departure Warning . . . . . . 5-25
Low Fuel Warning . . . . . . . . . . . . 5-29
Safety Belt Reminders . . . . . . . . 5-18
Security . . . . . . . . . . . . . . . . . . . . . . 5-29
Service Electric Parking Brake . . . . . . . . . . . . . . . . . . . . . . . 5-24
StabiliTrak
®OFF . . . . . . . . . . . . . 5-26
Tire Pressure . . . . . . . . . . . . . . . . . 5-28
Traction Control System
(TCS)/StabiliTrak
®. . . . . . . . . . 5-27
Traction Off . . . . . . . . . . . . . . . . . . . 5-26
Up-Shift . . . . . . . . . . . . . . . . . . . . . . 5-25
Locks
Automatic Door . . . . . . . . . . . . . . . 2-12
Delayed Locking . . . . . . . . . . . . . . 2-11
Door . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10 Locks (cont'd)
Lockout Protection . . . . . . . . . . . . 2-12
Power Door . . . . . . . . . . . . . . . . . . . 2-11
Safety . . . . . . . . . . . . . . . . . . . . . . . . 2-12
Loss of Control . . . . . . . . . . . . . . . . . 9-5
Low Fuel Warning Light . . . . . . . . 5-29
Lower Anchors and Tethers for Children (LATCH
System) . . . . . . . . . . . . . . . . . . . . . . 3-37
Lumbar Adjustment . . . . . . . . . . . . . 3-4 Front Seats . . . . . . . . . . . . . . . . . . . . 3-4
M
MaintenanceRecords . . . . . . . . . . . . . . . . . . . . .11-14
Maintenance and Care
Additional . . . . . . . . . . . . . . . . . . . . . 11-8
Maintenance Schedule . . . . . . . . 11-3 Recommended Fluidsand Lubricants . . . . . . . . . . . . .11-12
Malfunction Indicator Lamp . . . . 5-20
Manual Mode . . . . . . . . . . . . . . . . . . 9-28
Manual Transmission . . . . . . . . . . 9-29 Fluid . . . . . . . . . . . . . . . . . . . . . . . . 10-15
Memory Features . . . . . . . . . . . . . . . 1-8
Memory Seats . . . . . . . . . . . . . . . . . . 3-6 Messages
Battery Voltage and
Charging . . . . . . . . . . . . . . . . . . . . 5-38
Brake System . . . . . . . . . . . . . . . . 5-39
Compass . . . . . . . . . . . . . . . . . . . . . 5-39
Door Ajar . . . . . . . . . . . . . . . . . . . . . 5-40
Engine Cooling System . . . . . . . 5-41
Engine Oil . . . . . . . . . . . . . . . . . . . . 5-41
Engine Power . . . . . . . . . . . . . . . . 5-42
Fuel System . . . . . . . . . . . . . . . . . . 5-42
Key and Lock . . . . . . . . . . . . . . . . . 5-42
Object Detection System . . . . . 5-43
Ride Control System . . . . . . . . . . 5-45
Security . . . . . . . . . . . . . . . . . . . . . . 5-45
Starting the Vehicle . . . . . . . . . . . 5-46
Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-46
Transmission . . . . . . . . . . . . . . . . . 5-46
Vehicle . . . . . . . . . . . . . . . . . . . . . . . 5-38
Washer Fluid . . . . . . . . . . . . . . . . . 5-47
Window . . . . . . . . . . . . . . . . . . . . . . . 5-47
Mirrors
Automatic DimmingRearview . . . . . . . . . . . . . . . . . . . . 2-19
Convex . . . . . . . . . . . . . . . . . . . . . . . 2-18
Folding . . . . . . . . . . . . . . . . . . . . . . . 2-19