
Black plate (15,1)Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7576024) - 2015 - CRC - 9/15/14
Vehicle Care 10-15
Automatic Transmission
Fluid
How to Check Automatic
Transmission Fluid
It is not necessary to check the
transmission fluid level.
A transmission fluid leak is the only
reason for fluid loss. If a leak
occurs, take the vehicle to your
dealer and have it repaired as soon
as possible.
There is a special procedure for
checking and changing the
transmission fluid. Because this
procedure is difficult, you should
have this done at your dealer.
Contact your dealer for additional
information. The procedure can be
found in the service manual. To
purchase a service manual, see
Service Publications Ordering
Information on page 13-11.Change the fluid at the intervals
listed in
Maintenance Schedule on
page 11-3, and be sure to use the
fluid listed in Recommended Fluids
and Lubricants on page 11-12.Manual Transmission
Fluid
It is not necessary to check the
manual transmission fluid level.
A transmission fluid leak is the only
reason for fluid loss. If a leak
occurs, take the vehicle to your
dealer and have it repaired as soon
as possible. See Recommended
Fluids and Lubricants on page 11-12
for the proper fluid to use.
Hydraulic Clutch
For vehicles with a manual
transmission, it is not necessary to
regularly check brake/clutch fluid
unless there is a leak suspected.
Adding fluid will not correct a leak.
A fluid loss in this system could
indicate a problem. Have the
system inspected and repaired.
When to Check and What
to Use
The brake/hydraulic clutch fluid
reservoir cap has this symbol on it.
The common hydraulic clutch and
brake master cylinder fluid reservoir
is filled with DOT 3 brake fluid as
indicated on the reservoir cap. See
Engine Compartment Overview on
page 10-6 for reservoir location.
How to Check and Add Fluid
Visually check the brake/clutch fluid
reservoir to make sure the fluid level
is at the MIN (minimum) line on the
side of the reservoir. The brake/
hydraulic clutch fluid system should
be closed and sealed.

Black plate (80,1)Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7576024) - 2015 - CRC - 9/15/14
10-80 Vehicle Care
2. Position the two vehicles so thatthey are not touching.
To avoid the possibility of the
vehicles rolling, set the parking
brake firmly on both vehicles
involved in the jump start
procedure. Put an automatic
transmission in P (Park) or a
manual transmission in Neutral
before setting the parking brake.
3. Set the parking brake firmly on both vehicles. Put an automatic
transmission in P (Park) or a
manual transmission in Neutral
before setting the parking brake.
{Caution
If any accessories are left on or
plugged in during the jump
starting procedure, they could be
damaged. The repairs would not
be covered by the vehicle
warranty. Whenever possible, turn
off or unplug all accessories on
either vehicle when jump starting. 4. Turn the ignition to LOCK/OFF
and switch off all lights and
accessories in both vehicles,
except the hazard warning
flashers if needed.
{Warning
An electric fan can start up even
when the engine is not running
and can injure you. Keep hands,
clothing and tools away from any
underhood electric fan.
{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 battery has enough
water. You do not need to add
water to the battery 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.

Black plate (4,1)Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7576024) - 2015 - CRC - 9/15/14
11-4 Service and Maintenance
.Visually inspect windshield wiper
blades for wear, cracking,
or contamination. SeeExterior
Care on page 10-85. Replace
worn or damaged wiper blades.
See Wiper Blade Replacement
on page 10-29.
.Check tire inflation pressures.
See Tire Pressure on
page 10-48.
.Inspect tire wear. See Tire
Inspection on page 10-54.
.Visually check for fluid leaks.
.Inspect engine air cleaner filter.
See Engine Air Cleaner/Filter on
page 10-16.
.Inspect brake system.
.Visually inspect steering,
suspension, and chassis
components for damaged, loose,
or missing parts or signs of
wear. See Exterior Care on
page 10-85.
.Check restraint system
components. See Safety System
Check on page 3-16.
.Visually inspect fuel system for
damage or leaks.
.Visually inspect exhaust system
and nearby heat shields for
loose or damaged parts.
.Lubricate body components. See
Exterior Care on page 10-85.
.Check starter switch. See Starter
Switch Check on page 10-28.
.Check automatic transmission
shift lock control function. See
Automatic Transmission Shift
Lock Control Function Check on
page 10-28.
.Check ignition transmission lock.
See Ignition Transmission Lock
Check on page 10-29.
.Check parking brake and
automatic transmission park
mechanism. See Park Brake and
P (Park) Mechanism Check on
page 10-29.
.Check accelerator pedal for
damage, high effort, or binding.
Replace if needed.
.Visually inspect gas strut for
signs of wear, cracks, or other
damage. Check the hold open
ability of the strut. See your
dealer if service is required.
.Check tire sealant expiration
date, if equipped. See Tire
Sealant and Compressor Kit on
page 10-64.
.Inspect sunroof track and seal,
if equipped. See Sunroof on
page 2-22.

Black plate (7,1)Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7576024) - 2015 - CRC - 9/15/14
Service and Maintenance 11-7
Maintenance Schedule
Additional Required
Services - Severe12 000 km/7,500 mi
24 000 km/15,000 mi
36 000 km/22,500 mi
48 000 km/30,000 mi
60 000 km/37,500 mi
72 000 km/45,000 mi
84 000 km/52,500 mi
96 000 km/60,000 mi
108 000 km/67,500 mi
120 000 km/75,000 mi
132 000 km/82,500 mi
144 000 km/90,000 mi
156 000 km/97,500 mi
168 000 km/105,000 mi 180 000 km/112,500 mi
192 000 km/120,000 mi
204 000 km/127,500 mi
216 000 km/135,000 mi
228 000 km/142,500 mi
240 000 km/150,000 mi
Rotate tires and perform Required Services.
Check engine oil level and oil life percentage.
Change engine oil and filter, if needed.@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @
Replace passenger compartment air filter. (1)@ @@@@@
Inspect evaporative control system. (2)@ @@
Replace engine air cleaner filter. (3)@@@
Change automatic transmission fluid.@@@
Change manual transmission fluid.@@@
Except 2.0L Engine: Replace spark plugs. Inspect
spark plug wires.@
2.0L Engine Only: Replace spark plugs. Inspect
spark plug wires.@ @
Drain and fill engine cooling system. (4)@
Except with eAssist: Visually inspect accessory
drive belts. (5)@
Vehicles with eAssist: Visually inspect accessory
drive belts. (5)@
Replace brake/clutch fluid. (6)@@@

Black plate (12,1)Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7576024) - 2015 - CRC - 9/15/14
11-12 Service and Maintenance
Recommended Fluids, Lubricants, and Parts
Recommended Fluids and Lubricants
UsageFluid/Lubricant
Engine Oil Use only engine oil meeting the dexos1™ specification of the proper SAE
viscosity grade. Look for the dexos1 approved logo for GM approved
engine oil. See Engine Oil on page 10-11.
Engine Coolant 50/50 mixture of clean, drinkable water and use only DEX-COOL
®Coolant.
See Engine Coolant on page 10-19.
Hydraulic Brake/Clutch System DOT 3 Hydraulic Brake Fluid (GM Part No. 19299818, in Canada 19299819).
Windshield Washer Automotive windshield washer fluid that meets regional freeze protection requirements.
Automatic Transmission DEXRON
®-VI Automatic Transmission Fluid.
Manual Transmission Manual Transmission Fluid (GM Part No. 19259104, in Canada 19259105).
Hood Latch Assembly, Secondary Latch, Pivots, Spring Anchor, and Release Pawl Lubriplate Lubricant Aerosol (GM Part No. 89021668, in
Canada 89021674) or lubricant meeting requirements of NLGI #2,
Category LB or GC-LB.
Key Lock Cylinders, Hood and Door Hinges Multi-Purpose Lubricant, Superlube (GM Part No. 12346241, in
Canada 10953474).
Weatherstrip Conditioning Weatherstrip Lubricant (GM Part No. 3634770, in Canada 10953518) or Dielectric Silicone Grease (GM Part No. 12345579, in Canada 10953481).

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 (2,1)Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7576024) - 2015 - CRC - 9/15/14
i-2 INDEX
B
Battery . . . . . . . . . . . . . . . . . . . . . . . 10-26Jump Starting . . . . . . . . 10-77, 10-78
Power Protection . . . . . . . . . . . . . . 6-7
Voltage and ChargingMessages . . . . . . . . . . . . . . . . . . . 5-38
Blade Replacement, Wiper . . . 10-29
Brake
System Warning Light . . . . . . . . 5-23
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 10-24 Antilock . . . . . . . . . . . . . . . . . . . . . . . 9-31
Assist . . . . . . . . . . . . . . . . . . . . . . . . . 9-34
Fluid . . . . . . . . . . . . . . . . . . . . . . . . 10-25
Parking . . . . . . . . . . . . . . . . . . . . . . . 9-32
System Messages . . . . . . . . . . . . 5-39
Braking . . . . . . . . . . . . . . . . . . . . . . . . . 9-3
Braking System
Active Emergency . . . . . . . . . . . . 1-17
Break-In, New Vehicle . . . . . . . . . 9-14
Bulb Replacement . . . . . . . . . . . . 10-33 Halogen Bulbs . . . . . . . . . . . . . . 10-31
Headlamp Aiming . . . . . . . . . . . 10-30
Headlamps . . . . . . . . . . . . . . . . . 10-31
Headlamps, Front TurnSignal, and Parking
Lamps . . . . . . . . . . . . . . . . . . . . 10-31 Bulb Replacement (cont'd)
High Intensity Discharge
(HID) Lighting . . . . . . . . . . . . . 10-31
License Plate Lamps . . . . . . . 10-32
Taillamps, Turn Signal,
Stoplamps, and
Back-up Lamps . . . . . . . . . . . 10-32
Buying New Tires . . . . . . . . . . . . . 10-57
C
Calibration . . . . . . . . . . . . . . . . . . . . . . 5-4
California Fuel Requirements . . . . . . . . . . . 9-61
Perchlorate MaterialsRequirements . . . . . . . . . . . . . . . 10-3
Warning . . . . . . . . . . . . . . . . . . . . . . 10-2
Canadian Vehicle Owners . . . . . . . . iii
Capacities and Specifications . . . . . . . . . . . . . . . . 12-2
Carbon Monoxide
Engine Exhaust . . . . . . . . . . . . . . . 9-25
Trunk . . . . . . . . . . . . . . . . . . . . . . . . . 2-13
Winter Driving . . . . . . . . . . . . . . . . . 9-8
Cautions, Danger, and Warnings . . . . . . . . . . . . . . . . . . . . . . . . iv
Center Console Storage . . . . . . . . 4-2 Chains, Tire . . . . . . . . . . . . . . . . . . 10-61
Charging System Light . . . . . . . . 5-20
Check
Engine Light . . . . . . . . . . . . . . . . . . 5-20
IgnitionTransmission Lock . . . . . . . . 10-29
Child Restraints
Infants and YoungChildren . . . . . . . . . . . . . . . . . . . . . 3-32
Lower Anchors and Tethers for Children . . . . . . . . . 3-37
Older Children . . . . . . . . . . . . . . . . 3-30
Securing . . . . . . . . . . . . . . . . 3-45, 3-47
Systems . . . . . . . . . . . . . . . . . . . . . . 3-34
Cigarette Lighter . . . . . . . . . . . . . . . . 5-6
Circuit Breakers . . . . . . . . . . . . . . 10-35
Cleaning Exterior Care . . . . . . . . . . . . . . . 10-85
Interior Care . . . . . . . . . . . . . . . . 10-89
Climate Control Systems Dual Automatic . . . . . . . . . . . . . . . . 8-1
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
Cluster, Instrument . . . . . . . 5-8, 5-12
Clutch, Hydraulic . . . . . . . . . . . . . 10-15
Collision Damage Repair . . . . . . 13-8
Compact Spare Tire . . . . . . . . . . 10-76

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