2019 BUICK REGAL SPORTBACK check engine

Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada-12163021) -
2019 - CRC - 11/14/18
320 Vehicle Care
Caution
Ignoring these steps could result
in costly damage to the vehicle
that would not be covered by the
vehicle warranty. Trying to start
the vehicle by pushing or pulling it
will not work, and it could damage
the vehicle.
2.0L L4 Turbo Engine
3.6L V6 Engine
1. Discharged Remote BatteryPositive Terminal
2. Discharged Remote Battery Negative Ground Terminal
3. Good Battery Positive Terminal
4. Good Battery Negative Terminal
The jump start remote positive
terminal (1) and the remote negative
ground terminal (2) for the
discharged battery are in the engine
compartment on the driver side of
the vehicle. The jump start positive terminal (3)
and negative terminal (4) are on the
battery of the vehicle providing the
jump start.
The positive jump start connection
for the discharged battery is under a
cover. Remove the cover to expose
the terminal.
1. Check the other vehicle. It must have a 12-volt battery
with a negative ground system.
Caution
If the other vehicle does not have
a 12-volt system with a negative
ground, both vehicles can be
damaged. Only use a vehicle that
has a 12-volt system with a
negative ground for jump starting.
2. Position the two vehicles so that they are not touching.
3. Set the parking brake firmly and shift to P (Park). See
Shifting Into Park 0195.

Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada-12163021) -
2019 - CRC - 11/14/18
Service and Maintenance 335
The Tire Rotation and Required
Services are the responsibility of the
vehicle owner. It is recommended to
have your dealer perform these
services every 12 000 km/7,500 mi.
Proper vehicle maintenance helps to
keep the vehicle in good working
condition, improves fuel economy,
and reduces vehicle emissions.
Because of the way people use
vehicles, maintenance needs vary.
There may need to be more
frequent checks and services. The
Additional Required Services -
Normal are for vehicles that:
.Carry passengers and cargo
within recommended limits on
the Tire and Loading Information
label. See Vehicle Load Limits
0 186.
. Are driven on reasonable road
surfaces within legal driving
limits. .
Use the recommended fuel.
See Recommended Fuel (2.0L
Turbo Engine) 0232 or
Recommended Fuel (3.6L
Engine) 0232.
Refer to the information in the
Maintenance Schedule Additional
Required Services - Normal chart.
The Additional Required Services -
Severe are for vehicles that are:
. Mainly driven in heavy city traffic
in hot weather.
. Mainly driven in hilly or
mountainous terrain.
. Frequently towing a trailer.
. Used for high speed or
competitive driving.
. Used for taxi, police, or delivery
service.
Refer to the information in the
Maintenance Schedule Additional
Required Services - Severe chart.{Warning
Performing maintenance work can
be dangerous and can cause
serious injury. Perform
maintenance work only if the
required information, proper tools,
and equipment are available.
If they are not, see your dealer to
have a trained technician do the
work. See Doing Your Own
Service Work 0246.

Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada-12163021) -
2019 - CRC - 11/14/18
336 Service and Maintenance
Maintenance
Schedule
Owner Checks and Services
At Each Fuel Stop
.Check the engine oil level. See
Engine Oil 0251.
Once a Month
. Check the tire inflation
pressures. See Tire Pressure
0 285.
. Inspect the tires for wear. See
Tire Inspection 0291.
. Check the windshield washer
fluid level. See Washer Fluid
0 261.
Engine Oil Change
When the CHANGE ENGINE OIL
SOON message displays, have the
engine oil and filter changed within
the next 1 000 km/600 mi. If driven
under the best conditions, the engine oil life system may not
indicate the need for vehicle service
for up to a year. The engine oil and
filter must be changed at least once
a year and the oil life system must
be reset. Your trained dealer
technician can perform this work.
If the engine oil life system is reset
accidentally, service the vehicle
within 5 000 km/3,000 mi since the
last service. Reset the oil life
system when the oil is changed.
See
Engine Oil Life System 0253.
Air Conditioning Desiccant
(Replace Every Seven Years)
The air conditioning system requires
maintenance every seven years.
This service requires replacement of
the desiccant to help the longevity
and efficient operation of the air
conditioning system. This service
can be complex. See your dealer.
Tire Rotation and Required
Services Every 12 000 km/
7,500 mi
Rotate the tires, if recommended for
the vehicle, and perform the
following services. See Tire
Rotation 0291.
. Check engine oil level and oil
life percentage. If needed,
change engine oil and filter, and
reset oil life system. See Engine
Oil 0251 andEngine Oil Life
System 0253.
. Check engine coolant level. See
Cooling System 0256.
. Check windshield washer fluid
level. See Washer Fluid 0261.
. Check tire inflation pressures.
See Tire Pressure 0285.
. Inspect tire wear. See Tire
Inspection 0291.
. Visually check for fluid leaks.
. Inspect engine air cleaner filter.
See Engine Air Cleaner/Filter
0 255.

Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada-12163021) -
2019 - CRC - 11/14/18
338 Service and Maintenance
Maintenance Schedule
Additional Required
Services - Normal12 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)@@@
2.0L Engine: Replace spark plugs. Inspect spark
plug wires.@ @
3.6L Engine: Replace spark plugs. Inspect spark
plug wires.@
Drain and fill engine cooling system. (4)@
Visually inspect accessory drive belts. (5)@
Replace brake fluid. (6)
Replace windshield wiper blades. (7)
@ @ @ @ @ @ @ @ @ @
Replace hood and/or body lift support gas struts.@ @

Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada-12163021) -
2019 - CRC - 11/14/18
340 Service and Maintenance
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.@@@
2.0L Engine: Replace spark plugs. Inspect spark
plug wires.@ @
3.6L Engine: Replace spark plugs. Inspect spark
plug wires.@
Drain and fill engine cooling system. (4)@
Visually inspect accessory drive belts. (5)@
Replace brake fluid. (6)
Replace windshield wiper blades. (7)
@ @ @ @ @ @ @ @ @ @
Replace hood and/or body lift support gas struts.@ @

Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada-12163021) -
2019 - CRC - 11/14/18
342 Service and Maintenance
Additional
Maintenance and Care
Your vehicle is an important
investment and caring for it properly
may help to avoid future costly
repairs. To maintain vehicle
performance, additional
maintenance services may be
required.
It is recommended that your dealer
perform these services—their
trained dealer technicians know
your vehicle best. Your dealer can
also perform a thorough
assessment with a multi-point
inspection to recommend when your
vehicle may need attention.
The following list is intended to
explain the services and conditions
to look for that may indicate
services are required. Battery
The 12-volt 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 0345 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.

Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada-12163021) -
2019 - CRC - 11/14/18
350 Technical Data
ApplicationCapacities
Metric English
Fuel Tank 62.5 L 16.5 gal
Wheel Nut Torque 140 Y100 lb ft
All capacities are approximate. When adding, be sure to fill to the approximate level, as recommended in this
manual. Recheck fluid level after filling.
Engine Specifications
Engine VIN CodeTransmission Spark Plug Gap
2.0L L4 Engine (LTG) XAutomatic 0.75–0.90 mm (0.030–
0.035 in)
3.6L V6 Engine (LGX) SAutomatic 0.80–0.90 mm (0.031–
0.035 in)

Buick Regal Owner Manual (GMNA-Localizing-U.S./Canada-12163021) -
2019 - CRC - 11/14/18
378 Index
IndexA
Accessories andModifications . . . . . . . . . . . . . . . . . . 246
Accessory Power . . . . . . . . . . . . . . . 195
Adaptive Cruise Control . . . . . . . . 210
Adaptive Forward Lighting (AFL) . . . . . . . . . . . . . . . . . 164
Adaptive Forward Lighting (AFL) Light . . . . . . . . . . . . . . . . . . . . 142
Add-On Electrical Equipment . . . 243
Additional Information
OnStar . . . . . . . . . . . . . . . . . . . . . . . 368
Additional Maintenance and Care . . . . . . . . . . . . . . . . . . . . . . 342
Adjustments Lumbar, Front Seats . . . . . . . . . . . . 61
Thigh Support . . . . . . . . . . . . . . . . . . 62
Air Cleaner/Filter, Engine . . . . . . . 255
Air Conditioning . . . . . . . . . . . . . . . . 171
Air Filter, Passenger Compartment . . . . . . . . . . . . . . . . . 176
Air Vents . . . . . . . . . . . . . . . . . . . . . . . 176
Airbag System Check . . . . . . . . . . . . . . . . . . . . . . . . . . 89
How Does an Airbag
Restrain? . . . . . . . . . . . . . . . . . . . . . 82
Passenger Sensing System . . . . 84 Airbag System (cont'd)
What Makes an Airbag
Inflate? . . . . . . . . . . . . . . . . . . . . . . . . 82
What Will You See after an
Airbag Inflates? . . . . . . . . . . . . . . . 82
When Should an Airbag Inflate? . . . . . . . . . . . . . . . . . . . . . . . . 81
Where Are the Airbags? . . . . . . . . 79
Airbags
Adding Equipment to theVehicle . . . . . . . . . . . . . . . . . . . . . . . . 88
Passenger Status Indicator . . . 134
Readiness Light . . . . . . . . . . . . . . 134
Servicing Airbag-Equipped Vehicles . . . . . . . . . . . . . . . . . . . . . . . 88
System Check . . . . . . . . . . . . . . . . . . 78
Alarm Vehicle Security . . . . . . . . . . . . . . . . 49
Alert Lane Change . . . . . . . . . . . . . . . . . 227
Side Blind Zone (SBZA) . . . . . . 227
All-Season Tires . . . . . . . . . . . . . . . . 279
All-Wheel Drive . . . . . . . . . . . . 201, 265
Antilock Brake System (ABS) . . . 202 Warning Light . . . . . . . . . . . . . . . . . 138
Appearance Care Exterior . . . . . . . . . . . . . . . . . . . . . . . 325
Interior . . . . . . . . . . . . . . . . . . . . . . . . 330