
Black plate (14,1)Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7576024) - 2015 - CRC - 9/15/14
3-14 Seats and Restraints
If equipped with a shoulder belt
height adjuster, move it to the
height that is right for you. See
“Shoulder Belt Height Adjuster”
later in this section for
instructions on use and
important safety information.
4. To make the lap part tight, pullup on the shoulder belt.
To unlatch the belt, push the button
on the buckle. The belt should
return to its stowed position.
Before a door is closed, be sure the
safety belt is out of the way. If a
door is slammed against a safety
belt, damage can occur to both the
safety belt and the vehicle.
Shoulder Belt Height Adjuster
The vehicle has a shoulder belt
height adjuster for the driver and
front outboard passenger seating
positions. Adjust the height so the shoulder
portion of the belt is on the shoulder
and not falling off of it. The belt
should be close to, but not
contacting, the neck. Improper
shoulder belt height adjustment
could reduce the effectiveness of
the safety belt in a crash. See
How
to Wear Safety Belts Properly on
page 3-12.Press down on the release button
and move the height adjuster to the
desired position. The adjuster can
be moved up by pushing the slide/
trim up. After the adjuster is set to

Black plate (45,1)Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7576024) - 2015 - CRC - 9/15/14
Seats and Restraints 3-45
1. Insert the head restraint postsinto the holes in the top of the
seatback. The notches on the
posts must face the driver side
of the vehicle.
2. Push the head restraint down.
If necessary, press the height
adjustment release button to
further lower the head restraint.
See Head Restraints on
page 3-2.
3. Try to move the head restraint to make sure that it is locked in
place.
Replacing LATCH System
Parts After a Crash
{Warning
A crash can damage the LATCH
system in the vehicle. A damaged
LATCH system may not properly
secure the child restraint,
resulting in serious injury or even
(Continued)
Warning (Continued)
death in a crash. To help make
sure the LATCH system is
working properly after a crash,
see your dealer to have the
system inspected and any
necessary replacements made as
soon as possible.
If the vehicle has the LATCH system
and it was being used during a
crash, new LATCH system parts
may be needed.
New parts and repairs may be
necessary even if the LATCH
system was not being used at the
time of the crash.
Securing Child Restraints
(Rear Seat)
When securing a child restraint in a
rear seating position, study the
instructions that came with the child
restraint to make sure it is
compatible with this vehicle. If the child restraint has the LATCH
system, see
Lower Anchors and
Tethers for Children (LATCH
System) on page 3-37 for how and
where to install the child restraint
using LATCH. If a child restraint is
secured in the vehicle using a
safety belt and it uses a top tether,
see Lower Anchors and Tethers for
Children (LATCH System) on
page 3-37 for top tether anchor
locations.
Do not secure a child seat in a
position without a top tether anchor
if a national or local law requires
that the top tether be anchored, or if
the instructions that come with the
child restraint say that the top strap
must be anchored.
If the child restraint or vehicle seat
position does not have the LATCH
system, you will be using the safety
belt to secure the child restraint in
this position. Be sure to follow the
instructions that came with the child
restraint. Secure the child in the
child restraint when and as the
instructions say.

Black plate (1,1)Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7576024) - 2015 - CRC - 9/15/14
INDEX i-1
A
Accessories andModifications . . . . . . . . . . . . . . . . . 10-3
Accessory Power . . . . . . . . . . . . . . 9-23
Active Emergency Braking System . . . . . . . . 1-17, 9-54
Adaptive Cruise Control . . . . . . . 9-40
Add-On Electrical
Equipment . . . . . . . . . . . . . . . . . . . 9-65
Additional Information OnStar
®. . . . . . . . . . . . . . . . . . . . . . 14-6
Additional Maintenance and Care . . . . . . . . . . . . . . . . . . . . . 11-8
Adjustments Lumbar, Front Seats . . . . . . . . . . . 3-4
Air Cleaner/Filter, Engine . . . . . 10-16
Air Filter, Passenger
Compartment . . . . . . . . . . . . . . . . . 8-6
Air Intake . . . . . . . . . . . . . . . . . . . . . . . 8-6
Air Vents . . . . . . . . . . . . . . . . . . . . . . . 8-6
Airbag System Check . . . . . . . . . . . . . . . . . . . . . . . . 3-29
How Does an AirbagRestrain? . . . . . . . . . . . . . . . . . . . 3-21 Airbag System (cont'd)
Passenger Sensing
System . . . . . . . . . . . . . . . . . . . . . . 3-23
What Makes an Airbag
Inflate? . . . . . . . . . . . . . . . . . . . . . . 3-21
What Will You See after an Airbag Inflates? . . . . . . . . . . . . . 3-21
When Should an Airbag Inflate? . . . . . . . . . . . . . . . . . . . . . . 3-20
Where Are the Airbags? . . . . . . 3-19
Airbags Adding Equipment to theVehicle . . . . . . . . . . . . . . . . . . . . . . 3-28
Passenger Status Indicator . . . 5-19
Readiness Light . . . . . . . . . . . . . . 5-18
Servicing Airbag-Equipped
Vehicles . . . . . . . . . . . . . . . . . . . . . 3-27
System Check . . . . . . . . . . . . . . . . 3-17
Alarm Vehicle Security . . . . . . . . . . . . . . 2-15
Alert Lane Change . . . . . . . . . . . . . . . . . 9-56
Side Blind Zone (SBZA) . . . . . . 9-55
All-Season Tires . . . . . . . . . . . . . . 10-41
All-Wheel Drive . . . . . . . . . 9-31, 10-27 Antilock Brake
System (ABS) . . . . . . . . . . . . . . . . 9-31
Warning Light . . . . . . . . . . . . . . . . . 5-24
Appearance Care Exterior . . . . . . . . . . . . . . . . . . . . . 10-85
Interior . . . . . . . . . . . . . . . . . . . . . . 10-89
Ashtrays . . . . . . . . . . . . . . . . . . . . . . . . 5-6
Assistance Program,
Roadside . . . . . . . . . . . . . . . . . . . . . 13-5
Assistance Systems for Driving . . . . . . . . . . . . . . . . . . . . . . . 9-51
Assistance Systems for Parking and Backing . . . . . . . . . 9-49
Automatic Door Locks . . . . . . . . . . . . . . . . . . . 2-12
Headlamp System . . . . . . . . . . . . . 6-2
Transmission . . . . . . . . . . . . . . . . . 9-26
Transmission Fluid . . . . . . . . . 10-15
Automatic Transmission Manual Mode . . . . . . . . . . . . . . . . . 9-28
Shift Lock ControlFunction Check . . . . . . . . . . . 10-28

Black plate (5,1)Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7576024) - 2015 - CRC - 9/15/14
INDEX i-5
Front SeatsAdjustment . . . . . . . . . . . . . . . . . . . . 3-3
Heated . . . . . . . . . . . . . . . . . . . . . . . . 3-8
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-59 Additives . . . . . . . . . . . . . . . . . . . . . 9-61
Economy Driving . . . . . . . . . . . . . 1-22
Filling a Portable FuelContainer . . . . . . . . . . . . . . . . . . . 9-64
Filling the Tank . . . . . . . . . . . . . . . 9-62
Foreign Countries . . . . . . . . . . . . 9-61
Gauge . . . . . . . . . . . . . . . . . . . . . . . . 5-16
Low Fuel Warning Light . . . . . . . 5-29
Requirements, California . . . . . 9-61
System Messages . . . . . . . . . . . . 5-42
Fuses Engine Compartment
Fuse Block . . . . . . . . . . . . . . . . 10-35
Fuses and Circuit Breakers . . . . . . . . . . . . . . . . . . 10-35
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . . . . 10-39G
Garage Door Opener . . . . . . . . . . 5-53
Programming . . . . . . . . . . . . . . . . . 5-53
Gauges Engine CoolantTemperature . . . . . . . . . . . . . . . . 5-17
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16
Odometer . . . . . . . . . . . . . . . . . . . . . 5-15
Speedometer . . . . . . . . . . . . . . . . . 5-15
Tachometer . . . . . . . . . . . . . . . . . . . 5-15
Trip Odometer . . . . . . . . . . . . . . . . 5-15
Warning Lights and
Indicators . . . . . . . . . . . . . . . . . . . . 5-7
General Information Service and Maintenance . . . . . 11-1
Towing . . . . . . . . . . . . . . . . . . . . . . . . 9-64
Vehicle Care . . . . . . . . . . . . . . . . . . 10-2
Glove Box . . . . . . . . . . . . . . . . . . . . . . 4-1
GM Mobility Reimbursement Program . . . . . . . . . . . . . . . . . . . . . . 13-5
H
Halogen Bulbs . . . . . . . . . . . . . . . . 10-31
Hazard Warning Flashers . . . . . . . 6-3
Head Restraints . . . . . . . . . . . . . . . . 3-2
Headlamps
Aiming . . . . . . . . . . . . . . . . . . . . . . 10-30
Automatic . . . . . . . . . . . . . . . . . . . . . . 6-2
Bulb Replacement . . . . . . . . . . 10-31
Daytime RunningLamps (DRL) . . . . . . . . . . . . . . . . . 6-2
Flash-to-Pass . . . . . . . . . . . . . . . . . . 6-2
High Intensity Discharge
(HID) Lighting . . . . . . . . . . . . . 10-31
High-Beam On Light . . . . . . . . . . 5-29
High/Low Beam Changer . . . . . . 6-2
Lamps On Reminder . . . . . . . . . 5-30
Heated Steering Wheel . . . . . . . . . . . . . . . . 5-2
Heated Front Seats . . . . . . . . . . . . . 3-8
Heated Mirrors . . . . . . . . . . . . . . . . . 2-19
Heater Engine . . . . . . . . . . . . . . . . . . . . . . . . 9-21
High Voltage Devices and Wiring . . . . . . . . . . . . . . . . . . . . . . . 10-34
High-Beam On Light . . . . . . . . . . . 5-29
High-Speed Operation . . . . . . . . 10-50

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

Black plate (8,1)Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7576024) - 2015 - CRC - 9/15/14
i-8 INDEX
Mirrors (cont'd)Heated . . . . . . . . . . . . . . . . . . . . . . . 2-19
Power . . . . . . . . . . . . . . . . . . . . . . . . 2-19
Mirrors, Interior Rearview . . . . . . 2-19
Monitor System, Tire
Pressure . . . . . . . . . . . . . . . . . . . . 10-50
N
NavigationOnStar®. . . . . . . . . . . . . . . . . . . . . . 14-3
Net, Convenience . . . . . . . . . . . . . . 4-3
New Vehicle Break-In . . . . . . . . . . 9-14
O
Object Detection System
Messages . . . . . . . . . . . . . . . . . . . . 5-43
Odometer . . . . . . . . . . . . . . . . . . . . . . 5-15 Trip . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15
Off-Road Recovery . . . . . . . . . . . . . . . . . . . . . . 9-5
Oil Engine . . . . . . . . . . . . . . . . . . . . . . .10-11
Engine Oil Life System . . . . . 10-13
Messages . . . . . . . . . . . . . . . . . . . . 5-41
Pressure Light . . . . . . . . . . . . . . . . 5-28 Older Children, Restraints . . . . . 3-30
Online Owner Center . . . . . . . . . . 13-4
OnStar . . . . . . . . . . . . . . . . . . . . . . . 13-15
OnStar
®
System, In Brief . . . . . . . . . . . . . . 1-23
OnStar®Additional
Information . . . . . . . . . . . . . . . . . . . 14-6
OnStar
®Connections . . . . . . . . . . 14-4
OnStar®Emergency . . . . . . . . . . . 14-2
OnStar®Navigation . . . . . . . . . . . . 14-3
OnStar®Overview . . . . . . . . . . . . . 14-1
OnStar®Security . . . . . . . . . . . . . . 14-3
OnStar®Vehicle
Diagnostics . . . . . . . . . . . . . . . . . . 14-6
Ordering Service Publications . . . . . . . . .13-11
Outlets Power . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
Overheating, Engine . . . . . . . . . . 10-22
P
Park Shifting Into . . . . . . . . . . . . . . . . . . . 9-23
Shifting Out of . . . . . . . . . . . . . . . . 9-24 Parking . . . . . . . . . . . . . . . . . . . . . . . . 9-24
Brake . . . . . . . . . . . . . . . . . . . . . . . . . 9-32
Brake and P (Park)
Mechanism Check . . . . . . . . 10-29
Over Things That Burn . . . . . . . 9-25
Parking or Backing Assistance Systems . . . . . . . . . . 9-49
Passenger Airbag Status Indicator . . . . . . . . . . . . . . . . . . . . . 5-19
Passenger Compartment Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . 8-6
Passenger Sensing System . . . 3-23
Perchlorate Materials Requirements, California . . . . . 10-3
Personalization Vehicle . . . . . . . . . . . . . . . . . . . . . . . 5-47
Power Door Locks . . . . . . . . . . . . . . . . . . . 2-11
Flows . . . . . . . . . . . . . . . . . . . . . . . . . 5-31
Mirrors . . . . . . . . . . . . . . . . . . . . . . . . 2-19
Outlets . . . . . . . . . . . . . . . . . . . . . . . . 5-5
Protection, Battery . . . . . . . . . . . . . 6-7
Retained Accessory (RAP) . . . 9-23
Seat Adjustment . . . . . . . . . . . . . . . 3-4
Windows . . . . . . . . . . . . . . . . . . . . . 2-20

Black plate (10,1)Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7576024) - 2015 - CRC - 9/15/14
i-10 INDEX
Safety Defects ReportingCanadian Government . . . . . . 13-13
General Motors . . . . . . . . . . . . . 13-13
U.S. Government . . . . . . . . . . . 13-12
Safety Locks . . . . . . . . . . . . . . . . . . . 2-12
Safety System Check . . . . . . . . . . 3-16
Scheduling Appointments . . . . . . 13-7
Sealant Kit, Tire . . . . . . . . . . . . . . 10-64
Seats Adjustment, Front . . . . . . . . . . . . . . 3-3
Head Restraints . . . . . . . . . . . . . . . 3-2
Heated Front . . . . . . . . . . . . . . . . . . 3-8
Lumbar Adjustment, Front . . . . . 3-4
Memory . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Power Adjustment, Front . . . . . . 3-4
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
Reclining Seatbacks . . . . . . . . . . . 3-5
Securing Child Restraints . . . . . . . . . . . . . . 3-45, 3-47
Security Light . . . . . . . . . . . . . . . . . . . . . . . . . . 5-29
Messages . . . . . . . . . . . . . . . . . . . . 5-45
OnStar
®. . . . . . . . . . . . . . . . . . . . . . 14-3
Vehicle . . . . . . . . . . . . . . . . . . . . . . . 2-15
Vehicle Alarm . . . . . . . . . . . . . . . . . 2-15
Selective Ride Control . . . . . . . . . 9-37 Service . . . . . . . . . . . . . . . . . . . . . . . . . 8-6
Accessories and
Modifications . . . . . . . . . . . . . . . . 10-3
Doing Your Own Work . . . . . . . . 10-3
Engine Soon Light . . . . . . . . . . . . 5-20
Maintenance Records . . . . . . .11-14
Maintenance, General Information . . . . . . . . . . . . . . . . . . 11-1
Parts Identification Label . . . . . 12-1
Publications Ordering Information . . . . . . . . . . . . . . . . .13-11
Scheduling Appointments . . . . . 13-7
Service Electric Parking Brake Light . . . . . . . . . . . . . . . . . . . 5-24
Services Special Application . . . . . . . . . . . 11-8
Servicing the Airbag . . . . . . . . . . . 3-27
Shift Lock Control Function Check, Automatic
Transmission . . . . . . . . . . . . . . . . 10-28
Shifting
Into Park . . . . . . . . . . . . . . . . . . . . . . 9-23
Out of Park . . . . . . . . . . . . . . . . . . . 9-24
Side Blind Zone Alert (SBZA) . . . . . . . . . . . . . . . . . 9-55 Signals, Turn and
Lane-Change . . . . . . . . . . . . . . . . . 6-4
Spare Tire Compact . . . . . . . . . . . . . . . . . . . . 10-76
Special Application Services . . . 11-8
Specifications and Capacities . . . . . . . . . . . . . . . . . . . . 12-2
Speedometer . . . . . . . . . . . . . . . . . . 5-15
StabiliTrak OFF Light . . . . . . . . . . . . . . . . . . . . . 5-26
Start Assist, Hills . . . . . . . . . . . . . . 9-34
Start Vehicle, Remote . . . . . . . . . . 2-9
Starter Switch Check . . . . . . . . . 10-28
Starting the Engine . . . . . . . . . . . . 9-18
Starting the Vehicle Messages . . . . . . . . . . . . . . . . . . . . 5-46
Steering . . . . . . . . . . . . . . . . . . . . . . . . 9-4 Heated Wheel . . . . . . . . . . . . . . . . . 5-2
Wheel Adjustment . . . . . . . . . . . . . 5-2
Wheel Controls . . . . . . . . . . . . . . . . 5-2
Stoplamps and Back-up Lamps
Bulb Replacement . . . . . . . . . . 10-32
Storage Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2