
Black plate (2,1)Buick Regal Owner Manual - 2012
2012 Buick Regal Owner ManualM
Driving and Operating. . . . . . . . 9-1
Driving Information . . . . . . . . . . . . . 9-2
Starting and Operating . . . . . . . 9-15
Engine Exhaust . . . . . . . . . . . . . . 9-27
Automatic Transmission . . . . . . 9-28
Manual Transmission . . . . . . . . . 9-32
Brakes . . . . . . . . . . . . . . . . . . . . . . . 9-33
Ride Control Systems . . . . . . . . 9-37
Cruise Control . . . . . . . . . . . . . . . . 9-42
Object Detection Systems . . . . 9-44
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . 9-46
Towing . . . . . . . . . . . . . . . . . . . . . . . 9-52
Conversions and Add-Ons . . . 9-52 Vehicle Care
. . . . . . . . . . . . . . . . . 10-1
General Information . . . . . . . . . . 10-2
Vehicle Checks . . . . . . . . . . . . . . . 10-4
Headlamp Aiming . . . . . . . . . . . 10-33
Bulb Replacement . . . . . . . . . . 10-33
Electrical System . . . . . . . . . . . . 10-37
Wheels and Tires . . . . . . . . . . . 10-44
Jump Starting . . . . . . . . . . . . . . . 10-89
Towing . . . . . . . . . . . . . . . . . . . . . . 10-95
Appearance Care . . . . . . . . . . . 10-98
Service and Maintenance . . . 11-1
General Information . . . . . . . . . . 11-1
Maintenance Schedule . . . . . . . 11-3
Special Application
Services . . . . . . . . . . . . . . . . . . . . 11-9
Additional Maintenance
and Care . . . . . . . . . . . . . . . . . . . . 11-9
Recommended Fluids, Lubricants, and Parts . . . . . . 11-13
Maintenance Records . . . . . . . 11-16 Technical Data
. . . . . . . . . . . . . . . 12-1
Vehicle Identification . . . . . . . . . 12-1
Vehicle Data . . . . . . . . . . . . . . . . . . 12-2
Customer Information . . . . . . . 13-1
Customer Information . . . . . . . . 13-1
Reporting Safety Defects . . . . 13-17
Vehicle Data Recording and
Privacy . . . . . . . . . . . . . . . . . . . . 13-18
OnStar . . . . . . . . . . . . . . . . . . . . . . . 14-1
OnStar Overview . . . . . . . . . . . . . 14-1
OnStar Services . . . . . . . . . . . . . . 14-2
OnStar Additional Information . . . . . . . . . . . . . . . . . . 14-5
Index . . . . . . . . . . . . . . . . . . . . . i-1

Black plate (1,1)Buick Regal Owner Manual - 2012
Vehicle Care 10-1
Vehicle Care
General Information
General Information . . . . . . . . . . 10-2
CaliforniaProposition 65 Warning . . . . 10-3
California Perchlorate Materials Requirements . . . . 10-3
Accessories and Modifications . . . . . . . . . . . . . . . 10-3
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . . . 10-4
Hood . . . . . . . . . . . . . . . . . . . . . . . . 10-5
Engine Compartment Overview . . . . . . . . . . . . . . . . . . . 10-6
Engine Oil . . . . . . . . . . . . . . . . . . 10-11
Engine Oil Life System . . . . . 10-13
Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . 10-14
Manual Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . 10-15
Hydraulic Clutch . . . . . . . . . . . . 10-15
Engine Air Cleaner/Filter . . . . 10-15
Cooling System . . . . . . . . . . . . 10-18
Engine Coolant . . . . . . . . . . . . . 10-19
Engine Overheating . . . . . . . . 10-22 Power Steering Fluid
(2.0L and 2.4L without
eAssist ) . . . . . . . . . . . . . . . . . . 10-24
Power Steering Fluid (2.4L with eAssist) . . . . . . . . 10-25
Washer Fluid . . . . . . . . . . . . . . . 10-25
Brakes . . . . . . . . . . . . . . . . . . . . . 10-26
Brake Fluid . . . . . . . . . . . . . . . . . 10-27
Battery . . . . . . . . . . . . . . . . . . . . . 10-29
Starter Switch Check . . . . . . . 10-30
Automatic Transmission Shift Lock Control Function
Check . . . . . . . . . . . . . . . . . . . . . 10-31
Ignition Transmission Lock Check . . . . . . . . . . . . . . . . . . . . . 10-31
Park Brake and P (Park) Mechanism Check . . . . . . . . 10-31
Wiper Blade Replacement . . . . . . . . . . . . . . 10-32
Headlamp Aiming
Headlamp Aiming . . . . . . . . . . 10-33
Bulb Replacement
Bulb Replacement . . . . . . . . . . 10-33
Halogen Bulbs . . . . . . . . . . . . . . 10-33
High Intensity Discharge(HID) Lighting . . . . . . . . . . . . . 10-33 Headlamps, Front Turn
Signal and Parking
Lamps . . . . . . . . . . . . . . . . . . . . 10-34
Fog Lamps . . . . . . . . . . . . . . . . . 10-35
Taillamps, Turn Signal, Stoplamps, and Back-Up
Lamps . . . . . . . . . . . . . . . . . . . . 10-35
License Plate Lamp . . . . . . . . 10-36
Replacement Bulbs . . . . . . . . . 10-37
Electrical System
High Voltage Devices and Wiring . . . . . . . . . . . . . . . . . . . . . 10-37
Electrical System Overload . . . . . . . . . . . . . . . . . . 10-38
Fuses and Circuit Breakers . . . . . . . . . . . . . . . . . . 10-38
Engine Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . 10-39
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . . . 10-42
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . 10-44
All-Season Tires . . . . . . . . . . . . 10-45
Winter Tires . . . . . . . . . . . . . . . . 10-45
Summer Tires . . . . . . . . . . . . . . 10-46
Tire Sidewall Labeling . . . . . . 10-46
Tire Designations . . . . . . . . . . . 10-48

Black plate (7,1)Buick Regal Owner Manual - 2012
Vehicle Care 10-7
A.Engine Air Cleaner/Filter on
page 10‑15.
B. Engine Cover.
C. Engine Oil Dipstick. See Engine
Oil on page 10‑11.
D. Engine Oil Fill Cap. See Engine
Oil on page 10‑11.
E. Transmission Fluid Cap and Dipstick. See Automatic
Transmission Fluid on
page 10‑14. F. Power Steering Fluid Reservoir
and Cap. See Power Steering
Fluid (2.0L and 2.4L without
eAssist) on page 10‑24 or
Power Steering Fluid (2.4L with
eAssist) on page 10‑25.
G. Brake Master Cylinder and Hydraulic Clutch Reservoir
(if equipped with manual
transmission). See Brakes on
page 10‑26 orHydraulic Clutch
on page 10‑15. H. Battery Cover. See
Battery on
page 10‑29.
I. Coolant Surge Tank and Pressure Cap. See Engine
Coolant on page 10‑19.
J. Windshield Washer Fluid Reservoir. See Washer Fluid on
page 10‑25.
K. Engine Compartment Fuse
Block on page 10‑39.

Black plate (9,1)Buick Regal Owner Manual - 2012
Vehicle Care 10-9
A.Engine Air Cleaner/Filter on
page 10‑15.
B. Engine Cover.
C. Engine Oil Fill Cap. See Engine
Oil on page 10‑11.
D. Engine Oil Dipstick. See Engine
Oil on page 10‑11.
E. Transmission Fluid Cap and Dipstick. See Automatic
Transmission Fluid on
page 10‑14.
F. Brake Master Cylinder Reservoir. See Brakes on
page 10‑26. G. Coolant Surge Tank and
Pressure Cap. See Engine
Coolant on page 10‑19.
H. Battery Cover. See Battery on
page 10‑29.
I. Engine Compartment Fuse
Block on page 10‑39.
J. Windshield Washer Fluid Reservoir. See Washer Fluid on
page 10‑25.

Black plate (11,1)Buick Regal Owner Manual - 2012
Vehicle Care 10-11
A.Engine Air Cleaner/Filter on
page 10‑15.
B. Engine Cover.
C. Engine Cooling Fans (Out of View). See Cooling System on
page 10‑18.
D. Engine Oil Fill Cap. See Engine
Oil on page 10‑11.
E. Engine Oil Dipstick (Out of View). See Engine Oil on
page 10‑11.
F. High Voltage Cable (Orange Color).
G. Transmission Fluid Cap. See Automatic Transmission Fluid
on page 10‑14.
H. Brake Master Cylinder Reservoir. See Brakes on
page 10‑26.
I. Battery (Under Cover). See Battery on page 10‑29. J. Coolant Surge Tank and
Pressure Cap. See Engine
Coolant on page 10‑19.
K. Engine Compartment Fuse
Block on page 10‑39.
L. Windshield Washer Fluid Reservoir. See Washer Fluid on
page 10‑25.
Engine Oil
To ensure proper engine
performance and long life, careful
attention must be paid to engine oil.
Following these simple, but
important steps will help protect
your investment:
.Always use engine oil approved
to the proper specification and of
the proper viscosity grade. See
“Selecting the Right Engine Oil”
in this section.
.Check the engine oil level
regularly and maintain the
proper oil level. See “Checking
Engine Oil” and“When to Add
Engine Oil” in this section.
.Change the engine oil at the
appropriate time. See Engine Oil
Life System on page 10‑13.
.Always dispose of engine oil
properly. See “What to Do with
Used Oil” in this section.
Checking Engine Oil
It is a good idea to check the engine
oil level at each fuel fill. In order to
get an accurate reading, the oil
must be warm and the vehicle must
be on level ground. The engine oil
dipstick handle is a yellow loop. See
Engine Compartment Overview on
page 10‑6 for the location of the
engine oil dipstick.
Obtaining an accurate oil level
reading is essential:
1. If the engine has been running recently, turn off the engine and
allow several minutes for the oil
to drain back into the oil pan.
Checking the oil level too soon
after engine shutoff will not
provide an accurate oil level
reading.

Black plate (14,1)Buick Regal Owner Manual - 2012
10-14 Vehicle Care
be changed at least once a year
and, at this time, the system must
be reset. Your dealer has trained
service people who will perform this
work and reset the system. It is also
important to check the oil regularly
over the course of an oil drain
interval and keep it at the proper
level.
If the system is ever reset
accidentally, the oil must be
changed at 5 000 km (3,000 mi)
since the last oil change.
Remember to reset the oil life
system whenever the oil is changed.
How to Reset the Engine Oil
Life System
Reset the system whenever the
engine oil is changed so that the
system can calculate the next
engine oil change. To reset the
system:
1. Turn the ignition to ON/RUN withthe engine off. 2. Press the DIC MENU button on
the turn signal lever to enter the
Vehicle Information Menu. Use
the thumbwheel to scroll through
the menu items until you reach
REMAINING OIL LIFE.
3. Press the SET/CLR button to reset the oil life at 100%.
4. Turn the ignition to LOCK/OFF.
The system is reset when the
CHANGE ENGINE OIL SOON
message is off and the REMAINING
OIL LIFE 100% message is
displayed.
If the CHANGE ENGINE OIL SOON
message comes back on when the
vehicle is started, the engine oil life
system has not been reset. Repeat
the procedure.
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 13‑16.
Change the fluid and filter at the
intervals listed in Maintenance
Schedule on page 11‑3, and be sure

Black plate (92,1)Buick Regal Owner Manual - 2012
10-92 Vehicle Care
These locations are used instead of
a direct connection to the battery.
1. Check the other vehicle. It musthave a 12-volt battery with a
negative ground system.
Notice: Only use a vehicle that
has a 12-volt system with a
negative ground for jump
starting. If the other vehicle does
not have a 12-volt system with a
negative ground, both vehicles
can be damaged.
2. Position the two vehicles so that they are not touching.
3. 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. Notice:
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 the vehicle.
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.
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.

Black plate (13,1)Buick Regal Owner Manual - 2012
Service and Maintenance 11-13
Recommended Fluids, Lubricants, and Parts
Recommended Fluids and Lubricants
UsageFluid/Lubricant
Engine Oil Use only engine oil licensed to the dexos1 specfication, or equivalent, of
the proper SAE viscosity grade. ACDelco dexos1 Synthetic Blend is
recommended. See
Engine Oil on page 10‑11.
Engine Coolant (Except Vehicles with eAssist) 50/50 mixture of clean, drinkable water and use only DEX-COOL Coolant.
See
Engine Coolant on page 10‑19.
Engine Coolant (Vehicles with eAssist) Always use the pre‐mixed 50/50 mixture of deionized water and
DEX-COOL Coolant available at your dealer.
Hydraulic Brake/Clutch System
(Vehicles with DOT 3 brake fluid) DOT 3 Hydraulic Brake Fluid (GM Part No. 88862806, in
Canada 88862807).
Hydraulic Brake/Clutch System
(Vehicles with DOT 4 brake fluid) DOT 4 Hydraulic Brake Fluid (GM Part No. 88958860, in
Canada 88901244).
Windshield Washer Optikleen
®Washer Solvent.
Hydraulic Power Steering System DEXRON
®-VI Automatic Transmission Fluid.
Automatic Transmission (2.4L Engine) DEXRON
®-VI Automatic Transmission Fluid.
Automatic Transmission (2.0L Engine) Automatic Transmission Fluid (GM Part No. 19256039, in
Canada 19256040).
Manual Transmission See your dealer.