2017 BUICK ENCLAVE turn signal

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
9955666) - 2017 - crc - 8/4/16
230 Driving and Operating
When turning with a trailer, make
wider turns than normal so the
trailer will not strike soft shoulders,
curbs, road signs, trees or other
objects. Use the turn signal well in
advance and avoid jerky or sudden
maneuvers.
Turn Signals When Towing a
Trailer
The turn signal indicators on the
instrument cluster flash whenever
signaling a turn or lane change.
Properly hooked up, the trailer
lamps also flash, telling other
drivers the vehicle is turning,
changing lanes or stopping.
When towing a trailer, the arrows on
the instrument cluster flash for turns
even if the bulbs on the trailer are
burned out. Check occasionally to
be sure the trailer bulbs are still
working.
Driving on Grades
Reduce speed and shift to a lower
gear before starting down a long or
steep downgrade. If the
transmission is not shifted down, thebrakes might have to be used so
much that they would get hot and no
longer work well.
The vehicle can tow in D (Drive).
Use a lower gear if the transmission
shifts too often.
The Tow/Haul Mode may be used if
the transmission shifts too often.
See
Tow/Haul Mode 0209.
When towing at high altitude on
steep uphill grades, engine coolant
boils at a lower temperature than at
normal altitudes. If the engine is
turned off immediately after towing
at high altitude on steep uphill
grades, the vehicle could show
signs similar to engine overheating.
To avoid this, let the engine run
while parked, preferably on level
ground, with the transmission in
P (Park) for a few minutes before
turning the engine off. If the
overheat warning comes on, see
Engine Overheating 0250.
Parking on Hills
{Warning
Parking the vehicle on a hill with
the trailer attached can be
dangerous. If something goes
wrong, the rig could start to move.
People can be injured, and both
the vehicle and the trailer can be
damaged. When possible, always
park the rig on a flat surface.
If parking the rig on a hill: 1. Press the brake pedal, but do not shift into P (Park) yet. Turn
the wheels into the curb if
facing downhill or into traffic if
facing uphill.
2. Have someone place chocks under the trailer wheels.
3. When the wheel chocks are in place, release the brake pedal
until the chocks absorb
the load.
4. Reapply the brake pedal. Then apply the parking brake and
shift into P (Park).

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
9955666) - 2017 - crc - 8/4/16
234 Driving and Operating
When using a weight-distributing
hitch, the hitch must be adjusted so
that the distance (2) remains the
same both before and after coupling
the trailer to the tow vehicle.
Safety Chains
Always attach chains between the
vehicle and the trailer. Cross the
safety chains under the tongue of
the trailer to help prevent the tongue
from contacting the road if it
becomes separated from the hitch.
Always leave just enough slack so
the rig can turn. Never allow safety
chains to drag on the ground.
Trailer Brakes
A loaded trailer that weighs more
than 450 kg (1,000 lb) needs to have
its own brake system that is
adequate for the weight of the
trailer. Be sure to read and follow
the instructions for the trailer brakes
so they are installed, adjusted, and
maintained properly.Because the vehicle has antilock
brakes, do not try to tap into the
vehicle's hydraulic brake system.
If you do, both brake systems will
not work well, or at all.
Trailer Wiring Harness
Basic Trailer Wiring
The trailer wiring harness, with a
seven-pin connector, is located at
the rear of the vehicle and is tied to
the vehicle's frame. The harness
connector can be plugged into a
seven-pin universal heavy-duty
trailer connector available through
your dealer.
Use only a round, seven-wire
connector with flat blade terminals
meeting SAE J2863 specifications
for proper electrical connectivity.
The seven-wire harness contains
the following trailer circuits:
.
Yellow: Left Stop/Turn Signal
. Dark Green: Right Stop/Turn
Signal
. Brown: Taillamps
. Black: Ground .
Light Green: Back-up Lamps
. Red/Black: Battery Feed
. Dark Blue: Trailer Brake*
*The fuse for this circuit is installed
in the underhood electrical center,
but the wires are not connected.
They should be connected by your
dealer or a qualified service center.
If the back-up lamp circuit is not
functional, contact your dealer.
To help charge a remote
(non-vehicle) battery, press the Tow/
Haul Mode button at the end of the
shift lever. If the trailer is too light for
Tow/Haul Mode, turn on the
headlamps to help charge the
battery.
Electric Trailer Brake Control
Wiring Provisions
These wiring provisions for an
electric trailer brake controller are
included with the vehicle as part of
the trailer wiring package. The
instrument panel contains blunt cut
wires above the parking brake

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
9955666) - 2017 - crc - 8/4/16
236 Vehicle Care
Vehicle Care
General Information
General Information . . . . . . . . . . 237
California Proposition65 Warning . . . . . . . . . . . . . . . . . 237
California Perchlorate Materials Requirements . . . . . 237
Accessories and Modifications . . . . . . . . . . . . . . . . 237
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . . . 238
Hood . . . . . . . . . . . . . . . . . . . . . . . . . 239
Engine Compartment Overview . . . . . . . . . . . . . . . . . . . . 240
Engine Cover . . . . . . . . . . . . . . . . . 241
Engine Oil . . . . . . . . . . . . . . . . . . . . 241
Engine Oil Life System . . . . . . . 244
Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . . . 244
Engine Air Cleaner/Filter . . . . . . 245
Cooling System . . . . . . . . . . . . . . 246
Engine Coolant . . . . . . . . . . . . . . . 247
Engine Overheating . . . . . . . . . . 250
Overheated Engine Protection Operating Mode . . . . . . . . . . . . . 251
Power Steering Fluid . . . . . . . . . 252
Washer Fluid . . . . . . . . . . . . . . . . . 253 Brakes . . . . . . . . . . . . . . . . . . . . . . . 253
Brake Fluid . . . . . . . . . . . . . . . . . . . 254
Battery - North America . . . . . . 255
All-Wheel Drive . . . . . . . . . . . . . . . 256
Starter Switch Check . . . . . . . . . 256
Automatic Transmission Shift
Lock Control Function
Check . . . . . . . . . . . . . . . . . . . . . . . 256
Ignition Transmission Lock Check . . . . . . . . . . . . . . . . . . . . . . . 257
Park Brake and P (Park) Mechanism Check . . . . . . . . . . 257
Wiper Blade Replacement . . . . 257
Windshield Replacement . . . . . 258
Headlamp Aiming
Headlamp Aiming . . . . . . . . . . . . 258
Bulb Replacement
Bulb Replacement . . . . . . . . . . . . 259
High Intensity Discharge (HID) Lighting . . . . . . . . . . . . . . . . . . . . . 259
Taillamps, Turn Signal, and Stoplamps . . . . . . . . . . . . . . . . . . 259
License Plate Lamp . . . . . . . . . . 259
Replacement Bulbs . . . . . . . . . . . 260
Electrical System
High Voltage Devices and Wiring . . . . . . . . . . . . . . . . . . . . . . . 260
Electrical System Overload . . . 261
Fuses and Circuit Breakers . . . 261 Engine Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . 261
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 265
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . 267
All-Season Tires . . . . . . . . . . . . . . 268
Winter Tires . . . . . . . . . . . . . . . . . . 269
Summer Tires . . . . . . . . . . . . . . . . 269
Tire Sidewall Labeling . . . . . . . . 270
Tire Designations . . . . . . . . . . . . . 272
Tire Terminology andDefinitions . . . . . . . . . . . . . . . . . . 272
Tire Pressure . . . . . . . . . . . . . . . . . 275
Tire Pressure Monitor System . . . . . . . . . . . . . . . . . . . . . . 276
Tire Pressure Monitor Operation . . . . . . . . . . . . . . . . . . . 277
Tire Inspection . . . . . . . . . . . . . . . . 280
Tire Rotation . . . . . . . . . . . . . . . . . 280
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . . . 281
Buying New Tires . . . . . . . . . . . . . 282
Different Size Tires and Wheels . . . . . . . . . . . . . . . . . . . . . . 283
Uniform Tire Quality Grading . . . . . . . . . . . . . . . . . . . . . 284
Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . . . . . . . 285
Wheel Replacement . . . . . . . . . . 286

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
9955666) - 2017 - crc - 8/4/16
Vehicle Care 259
Bulb Replacement
For the proper type of replacement
bulbs, seeReplacement
Bulbs 0260.
For any bulb-changing procedure
not listed in this section, contact
your dealer.
High Intensity Discharge
(HID) Lighting
{Warning
The High Intensity Discharge
(HID) lighting system operates at
a very high voltage. If you try to
service any of the system
components, you could be
seriously injured. Have your
dealer or a qualified technician
service them.
After an HID headlamp bulb has
been replaced, the beam might be a
slightly different shade than it was
originally. This is normal.
Taillamps, Turn Signal,
and Stoplamps
To replace one of these bulbs: 1. Open the liftgate. See Liftgate 034.
2. Using a small flat bladed tool, remove the screw covers by
prying them from the bottom.
3. Remove the two hex screws holding the taillamp assembly
in place.
4. Pull out the taillamp assembly. 5. Turn the bulb socket
counterclockwise and pull it
straight out to remove it.
6. Replace the bulb.
7. Reverse Steps 3–5 to reinstall the taillamp assembly.
When reinstalling the taillamp
assembly, the pin on the
taillamp assembly must line up
and be inserted correctly into
the opening.
8. Replace the screw covers.
License Plate Lamp
To replace one of these bulbs: 1. Remove the two push pins holding each of the license
plate lamps to the liftgate trim
by unscrewing them.

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
9955666) - 2017 - crc - 8/4/16
260 Vehicle Care
2. Turn and pull the license platelamp forward through the
liftgate trim opening.
3. Turn the bulb socket counterclockwise and pull the
bulb straight out of the socket.
4. Install the new bulb.
5. Reverse Steps 1–3 to reinstall the license plate lamp.
Replacement Bulbs
Exterior Lamp Bulb
Number
License Plate Lamp 194LL
Rear Stoplamp/Turn
Signal 7443LL
(W21/
5WLL)
For replacement bulbs not listed
here, contact your dealer.
Electrical System
High Voltage Devices and
Wiring
{Warning
Exposure to high voltage can
cause shock, burns, and even
death. The high voltage
components in the vehicle can
only be serviced by technicians
with special training.
High voltage components are
identified by labels. Do not
remove, open, take apart,
or modify these components.
High voltage cable or wiring has
orange covering or labels. Do not
probe, tamper with, cut, or modify
high voltage cable or wiring.

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
9955666) - 2017 - crc - 8/4/16
Vehicle Care 263
FusesUsage
AFS Adaptive forward lighting system
AIRBAG Airbag
AUX POWER Auxiliary power AUX
VAC PUMP Auxiliary
vacuum pump
AWD AWD system
BATT 1 Battery 1
BATT 2 Battery 2
BATT 3 Battery 3 CIGAR
LIGHTER Cigarette lighter
ECM 1 Engine control module 1
ECM/
FPM IGN Engine control
module/Fuel pump
control module
ignition
EMISSION 1 Emission 1
EMISSION 2 Emission 2
EVEN COILS Injector coils –even
FAN 1 Cooling fan 1 Fuses
Usage
FAN 2 Cooling fan 2 * Headlamp washer (China)/Trailer
brake
FPM Fuel pump power module
FOG
LAMP (GMC) Fog lamps (GMC)
HTD
STR WHL Heated steering
wheel
HORN Horn
HTD MIR Heated exterior rearview mirror
HUMIDITY/ MAF Humidity sensor/
Mass airflow
sensor
HVAC BLWR HVAC blower LT HI BEAM Left high-beam headlamp
LT LO BEAM Left low-beam headlamp
LT PRK Left parking lamp Fuses
Usage
LT TRLR
STOP/TRN Left trailer
stoplamp/Turn
signal lamp
ODD COILS Injector coils –odd
PWR L/GATE Power liftgate
PWR
OUTLET Power outlet
RR APO Rear accessory power outlet
RR DEFOG Rear defogger RR HVAC Rear climate control system
RT HI BEAM Right high-beam headlamp
RT LO BEAM Right low-beam headlamp
RT PRK Right parking lamp
RT TRLR
STOP/TRN Right trailer
stoplamp/Turn
signal lamp
RVC SNSR Regulated voltage control sensor

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
9955666) - 2017 - crc - 8/4/16
264 Vehicle Care
FusesUsage
S/ROOF/
SUNSHADE Sunroof
SERVICE Service repair SPARE –
STOP
LAMPS
(CHINA ONLY) Stoplamps
(China only)
STRTR Starter TCM Transmission control module
TRANS Transmission TRLR
BCK/UP Trailer reverse
lamps
TRLR BRK Trailer brake TRLR
PRK LAMP Trailer parking
lamps
TRLR PWR Trailer power WPR/WSW Windshield wiper/ Washer Relays
Usage
A/C
CMPRSR
CLTCH A/C clutch
AUX
VAC PUMP Auxiliary
vacuum pump
CRNK Switched power FAN 1 Cooling fan 1
FAN 2 Cooling fan 2
FAN 3 Cooling fan 3 FOG
LAMP (GMC) Fog lamps (GMC)
HI BEAM High-beam headlamps
HID/
LO BEAM HID low-beam
headlamps
HORN Horn
IGN Ignition main
LT TRLR
STOP/TRN Trailer left
stoplamp/Turn
signal lamp
PRK LAMP Parking lamp PWR/TRN Powertrain Relays
Usage
RR DEFOG Rear window defogger
RT TRLR
STOP/TRN Trailer right
stoplamp/Turn
signal lamp
STOP
LAMPS
(CHINA ONLY) Stop lamps
(China only)
TRLR
BCK/UP Trailer reverse
lamps
WPR Windshield wiper
WPR HI Windshield wiper –
high speed

Buick Enclave Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
9955666) - 2017 - crc - 8/4/16
266 Vehicle Care
FusesUsage
DRL/
LO BEAM Daytime running
lamps relay/
Low-beam
headlamp relay
DSPLY Display
FRT WSW Front windshield washer
HTD/
COOL SEAT Heated/Cooled
seats
HVAC HVAC
INADV PWR INT LAMPS Inadvertent power/
Interior lamps
INFOTMNT/ MSM Infotainment/
Memory seat
module
LT TRN SIG Left turn signal lamp
OBS
DET/URS Rear park assist/
Side blind zone
alert/Forward
collision alert/
Universal remote
system
PDM Power mirrors/ Liftgate release Fuses
Usage
PWR MODE Power mode PWR MIR Power mirrors
RDO Radio
REAR WPR Rear wiper
RT TRN SIG Right turn signal lamp
STR WHL ILLUM Steering wheel
illumination
USB CHRG USB charging
Relay Side