2019 CHEVROLET BLAZER lane assist

Chevrolet Blazer (GMNA-Localizing-U.S./Canada/Mexico-12461541) - 2019 -
CRC - 3/11/19
Driving and Operating 239
Warning (Continued)
If LKA only detects lane markings
on one side of the road, it will
only assist or provide an LDW
alert when approaching the lane
on the side where it has detected
a lane marking. Even with LKA
and LDW, you must steer the
vehicle. Always keep your
attention on the road and
maintain proper vehicle position
within the lane, or vehicle
damage, injury, or death could
occur. Always keep the
windshield, headlamps, and
camera sensors clean and in
good repair. Do not use LKA in
bad weather conditions.
{Warning
Using LKA while towing a trailer
or on slippery roads could cause
loss of control of the vehicle and
a crash. Turn the system off.
How the System Works
The LKA camera sensor is on the
windshield ahead of the rearview
mirror.
To turn LKA on and off, press
A
on the center console.
When on,
Ais green if LKA is
available to assist and provide LDW
alerts. It may assist by gently
turning the steering wheel and
display
Aas amber if the vehicle
approaches a detected lane marking
without using a turn signal in that
direction. It may also provide an
LDW alert by flashing
Aamber
as the lane marking is crossed.
Additionally, there may be three
beeps, or the driver seat may pulse
three times, on the right or left,
depending on the lane departure
direction. Take Steering
The LKA system does not
continuously steer the vehicle.
If LKA does not detect active driver
steering, an alert, chime, or DIC
message may be provided. Move
the steering wheel to dismiss.
When the System Does Not
Seem to Work Properly
The system performance may be
affected by:
.
Close vehicles ahead.
. Sudden lighting changes, such
as when driving through tunnels.
. Banked roads.
. Roads with poor lane markings,
such as two-lane roads.
If the LKA system is not functioning
properly when lane markings are
clearly visible, cleaning the
windshield may help.

Chevrolet Blazer (GMNA-Localizing-U.S./Canada/Mexico-12461541) - 2019 -
CRC - 3/11/19
240 Driving and Operating
A system unavailable message may
display if the camera is blocked.
The LKA system does not need
service.
LKA assistance and/or LDW alerts
may occur due to tar marks,
shadows, cracks in the road,
temporary or construction lane
markings, or other road
imperfections. This is normal system
operation; the vehicle does not need
service. Turn LKA off if these
conditions continue.Fuel
Top Tier Fuel
GM recommends the use of TOP
TIER Detergent Gasoline to keep
the engine clean, reduce engine
deposits, and maintain optimal
vehicle performance. Look for the
TOP TIER Logo or see
www.toptiergas.com for a list of TOP
TIER Detergent Gasoline marketers
and applicable countries.
Recommended Fuel
Do not use any fuel labeled E85 or
FlexFuel. Do not use gasoline with
ethanol levels greater than 15% by
volume.
Use regular unleaded gasoline
meeting ASTM specification D4814
with a posted octane rating of 87 or
higher. Do not use gasoline with a
posted octane rating of less than 87,
as this may cause engine knock and
will lower fuel economy.
Prohibited Fuels
Caution
Do not use fuels with any of the
following conditions; doing so
may damage the vehicle and void
its warranty:. For vehicles that are not
FlexFuel, fuel labeled
greater than 15% ethanol by
(Continued)

Chevrolet Blazer (GMNA-Localizing-U.S./Canada/Mexico-12461541) - 2019 -
CRC - 3/11/19
244 Driving and Operating
Warning (Continued)
or the trailer brakes are
inadequate for the load, the
vehicle may not stop as expected.
The driver and passengers could
be seriously injured. The vehicle
may also be damaged; the
resulting repairs would not be
covered by the vehicle warranty.
Pull a trailer only if all the steps in
this section have been followed.
Ask your dealer for advice and
information about towing a trailer
with the vehicle.
Driving with a Trailer
Trailering is different than just
driving the vehicle by itself.
Trailering means changes in
handling, acceleration, braking,
durability, and fuel economy.
Successful, safe trailering takes
correct equipment, and it has to be
used properly.The following information has many
time-tested, important trailering tips
and safety rules. Many of these are
important for your safety and that of
your passengers. Read this section
carefully before pulling a trailer.
When towing a trailer:
.
Become familiar with and follow
all state and local laws that
apply to trailer towing. These
requirements vary from state to
state.
. State laws may require the use
of extended side view mirrors.
Even if not required, you should
install extended side view
mirrors if your visibility is limited
or restricted while towing.
. Do not tow a trailer during the
first 800 km (500 mi) of vehicle
use to prevent damage to the
engine, axle, or other parts.
. It is recommended to perform
the first oil change before heavy
towing. .
During the first 800 km (500 mi)
of trailer towing, do not drive
over 80 km/h (50 mph) and do
not make starts at full throttle.
. Vehicles can tow in D (Drive).
Tow/Haul Mode is recommended
for heavier trailers. See Tow/
Haul Mode 0204.
If the transmission downshifts
too often, a lower gear may be
selected using Manual Mode.
See Manual Mode 0203.
If equipped, Driver Assistance
Systems must be turned off when
towing a trailer:
. Adaptive Cruise Control (ACC)
. Lane Keep Assist (LKA)
. Park Assist
. Reverse Automatic
Braking (RAB)
If equipped, the following driver
assistance features should be
turned to alert or off when towing a
trailer:
. Forward Automatic
Braking (FAB)

Chevrolet Blazer (GMNA-Localizing-U.S./Canada/Mexico-12461541) - 2019 -
CRC - 3/11/19
Driving and Operating 245
.Intelligent Brake Assist (IBA)
. Front Pedestrian Braking (FPB)
If equipped with Lane Change Alert
(LCA), the LCA detection zones that
extend back from the side of the
vehicle do not move further back
when a trailer is towed. Use caution
while changing lanes when towing a
trailer.
If equipped with Rear Cross Traffic
Alert (RCTA), use caution while
backing up when towing a trailer, as
the RCTA detection zones that
extend out from the back of the
vehicle do not move further back
when a trailer is towed.
{Warning
To prevent serious injury or death
from carbon monoxide (CO),
when towing a trailer: . Do not drive with the
liftgate, trunk/hatch,
or rear-most window open.
(Continued)
Warning (Continued)
.Fully open the air outlets on
or under the instrument
panel.
. Adjust the climate control
system to a setting that
brings in only outside air.
See “Climate Control
Systems” in the Index.
For more information about
carbon monoxide, see Engine
Exhaust 0200.
Towing a trailer requires experience.
The combination of the vehicle and
trailer is longer and not as
responsive as the vehicle itself. Get
used to the handling and braking of
the combination by driving on a
level road surface before driving on
public roads.
The trailer structure, the tires, and
the brakes must all be rated to carry
the intended cargo. Inadequate trailer equipment can cause the
combination to operate in an
unexpected or unsafe manner.
Before driving, inspect all trailer
hitch parts and attachments, safety
chains, electrical connectors, lamps,
tires, and mirrors. See
Towing
Equipment 0251. If the trailer has
electric brakes, start the
combination moving and then
manually apply the trailer brake
controller to check that the trailer
brakes work.
During the trip, occasionally check
that the cargo and trailer are secure
and that the lamps and any trailer
brakes are working.
Towing with a Stability Control
System
When towing, the stability control
system might be heard. The system
reacts to vehicle movement caused
by the trailer, which mainly occurs
during cornering. This is normal
when towing heavier trailers.

Chevrolet Blazer (GMNA-Localizing-U.S./Canada/Mexico-12461541) - 2019 -
CRC - 3/11/19
254 Driving and Operating
Electric Trailer Brake Control
Wiring Provisions
Wiring provisions for an aftermarket
electric trailer brake controller are
included with the vehicle as part of
the trailer wiring package. The
harness contains the following
circuits:
These wiring provisions for an
electric trailer brake controller are
included with the vehicle as part of
the trailer wiring package. The body
harness, inside the front driver side
instrument panel, contains blunt cut
wires below the headlamp switch for
the electric trailer brake controller.
The harness contains the following
wires:
.Blue: Electric Trailer Brakes
. Blue: Battery Feed
. White/Blue: Brake Apply Signal
. Black: Ground
Refer to the aftermarket electric
trailer brake controller owner's
manual to determine wire color
coding of the electric trailer brake
controller. The wire colors on the brake controller may be different
from the vehicle. The electric trailer
brake controller should be installed
by your dealer or a qualified service
center.
Trailer Lamps
Always check all trailer lamps are
working at the beginning of each
trip, and periodically on longer trips.
Turn Signals When Towing a
Trailer
When properly connected, the trailer
turn signals will illuminate to indicate
the vehicle is turning, changing
lanes, or stopping. When towing a
trailer, the arrows on the instrument
cluster will illuminate even if the
trailer is not properly connected or
the bulbs are burned out.
Tow/Haul Mode
For instructions on how to enter
Tow/Haul Mode, see
Driver Mode
Control 0210.
Tow/Haul assists when pulling a
heavy trailer or a large or heavy
load. See Tow/Haul Mode 0204. Tow/Haul Mode is designed to be
most effective when the vehicle and
trailer combined weight is at least
75% of the vehicle's Gross
Combined Weight Rating (GCWR).
See
“Weight of the Trailer” under
Trailer Towing 0247. Tow/Haul
Mode is most useful when towing a
heavy trailer or carrying a large or
heavy load:
. Through rolling terrain.
. In stop-and-go traffic.
. In busy parking lots.
Operating the vehicle in Tow/Haul
Mode when lightly loaded or not
towing will not cause damage;
however, it is not recommended and
may result in unpleasant engine and
transmission driving characteristics
and reduced fuel economy.Trailer Sway
Control (TSC)
Vehicles with StabiliTrak/Electronic
Stability Control (ESC) have a
Trailer Sway Control (TSC) feature.
Trailer sway is unintended

Chevrolet Blazer (GMNA-Localizing-U.S./Canada/Mexico-12461541) - 2019 -
CRC - 3/11/19
Index 397
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
How to Wear Seat BeltsProperly . . . . . . . . . . . . . . . . . . . . . . . . 72
HVAC . . . . . . . . . . . . . . . . . . . . . . . . . . . 170
I
Ignition Positions . . . . . . . . . . . . . . . 192
Immobilizer . . . . . . . . . . . . . . . . . . . . . . 48
Indicator Pedestrian Ahead . . . . . . . . . . . . 140
Vehicle Ahead . . . . . . . . . . . . . . . . 139
Infants and Young Children,
Restraints . . . . . . . . . . . . . . . . . . . . . . 93
Information Publication Ordering . . . . . . . . . . 375
Infotainment . . . . . . . . . . . . . . . . . . . . 169
Infotainment System . . . . . . . . . . . . 379
Instrument Cluster . . . . . . . . . 124, 128
Interior Rearview Mirrors . . . . . . . . . 50
Introduction . . . . . . . . . . . . . . . . . . . . . . . 2
J
Jump Starting - North America . . . . . . . . . . . . . . . . . . . . . . . 332
K
Keyless EntryRemote (RKE) System . . . . . . . . . 27
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
L
Labeling, Tire Sidewall . . . . . . . . . . 298
Lamps Courtesy . . . . . . . . . . . . . . . . . . . . . . 165
Daytime Running (DRL) . . . . . . 163
Dome . . . . . . . . . . . . . . . . . . . . . . . . . 165
Exterior Controls . . . . . . . . . . . . . . 160
Exterior Lamps OffReminder . . . . . . . . . . . . . . . . . . . 162
Exterior Lighting Battery
Saver . . . . . . . . . . . . . . . . . . . . . . . 168
Malfunction Indicator (Check Engine) . . . . . . . . . . . . . 135
On Reminder . . . . . . . . . . . . . . . . . 143
Reading . . . . . . . . . . . . . . . . . . . . . . 165
Lane Change Alert (LCA) . . . . . . . 236
Lane Departure Warning (LDW) . . . . . . . . . . . . . . . . 238
Lane Keep Assist (LKA) . . . . . . . . 238
Lane Keep Assist Light . . . . . . . . . 139
Lap-Shoulder Belt . . . . . . . . . . . . . . . 74
LATCH System
Replacing Parts after aCrash . . . . . . . . . . . . . . . . . . . . . . . 103
LATCH, Lower Anchors and Tethers for Children . . . . . . . . . . . . 98
LED Lighting . . . . . . . . . . . . . . . . . . . . 284
Liftgate . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Lighting
Entry . . . . . . . . . . . . . . . . . . . . . . . . . 166
Exit . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
Illumination Control . . . . . . . . . . . 165
LED . . . . . . . . . . . . . . . . . . . . . . . . . . 284
Lights Airbag Readiness . . . . . . . . . . . . . 134
Antilock Brake System
(ABS) Warning . . . . . . . . . . . . . . 138
Brake System Warning . . . . . . . 137
Charging System . . . . . . . . . . . . . 135
Check Engine (Malfunction Indicator) . . . . . . . . . . . . . . . . . . . . 135
Cruise Control . . . . . . . . . . . . . . . . 143
Door Ajar . . . . . . . . . . . . . . . . . . . . . 143
Electric Parking Brake . . . . . . . . 138
Engine Oil Pressure . . . . . . . . . . 141
Flash-to-Pass . . . . . . . . . . . . . . . . . 162
High-Beam On . . . . . . . . . . . . . . . . 142
High/Low Beam Changer . . . . . 162
Lane Keep Assist . . . . . . . . . . . . . 139
Low Fuel Warning . . . . . . . . . . . . 142
Seat Belt Reminders . . . . . . . . . . 133
Security . . . . . . . . . . . . . . . . . . . . . . 142
Service Electric Parking Brake . . . . . . . . . . . . . . . . . . . . . . . 138
StabiliTrak OFF . . . . . . . . . . . . . . . 140
Tire Pressure . . . . . . . . . . . . . . . . . 141

Chevrolet Blazer (GMNA-Localizing-U.S./Canada/Mexico-12461541) - 2019 -
CRC - 3/11/19
400 Index
Reverse Tilt Mirrors . . . . . . . . . . . . . . 50
RoadsDriving, Wet . . . . . . . . . . . . . . . . . . 184
Roadside Assistance Program . . . . . . . . . . . . . . . . . . . . . . . 370
Roof Sunroof . . . . . . . . . . . . . . . . . . . . . . . . . 56
Roof Rack System . . . . . . . . . . . . . . 114
Rotation, Tires . . . . . . . . . . . . . . . . . . 310
Routing, Engine Drive Belt . . . . . . 365
Running the Vehicle While Parked . . . . . . . . . . . . . . . . . . . . . . . . 201
S
Safety Defects ReportingCanadian Government . . . . . . . . 377
General Motors . . . . . . . . . . . . . . . 377
U.S. Government . . . . . . . . . . . . . 377
Safety Locks . . . . . . . . . . . . . . . . . . . . . 39
Safety System Check . . . . . . . . . . . . 78
Scheduling Appointments . . . . . . . 372
Sealant Kit, Tire . . . . . . . . . . . . . . . . 319
Seat Belts . . . . . . . . . . . . . . . . . . . . . . . 71 Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Extender . . . . . . . . . . . . . . . . . . . . . . . . 77
How to Wear Seat BeltsProperly . . . . . . . . . . . . . . . . . . . . . . . 72
Lap-Shoulder Belt . . . . . . . . . . . . . . 74 Seat Belts (cont'd)
Reminders . . . . . . . . . . . . . . . . . . . . 133
Replacing after a Crash . . . . . . . . 78
Use During Pregnancy . . . . . . . . . . 77
Seats Adjustment, Front . . . . . . . . . . . . . . . 61
Head Restraints . . . . . . . . . . . . . . . . 59
Heated and Ventilated Front . . . . 67
Heated, Rear . . . . . . . . . . . . . . . . . . . 71
Lumbar Adjustment, Front . . . . . . 62
Memory . . . . . . . . . . . . . . . . . . . . . . . . . 64
Power Adjustment, Front . . . . . . . 61
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Reclining Seatbacks . . . . . . . . . . . . 62
Securing Child Restraints . . . . . . . . . . . . . . . . 103, 105
Security Light . . . . . . . . . . . . . . . . . . . . . . . . . . 142
OnStar . . . . . . . . . . . . . . . . . . . . . . . 382
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . 47
Vehicle Alarm . . . . . . . . . . . . . . . . . . . 47
Service . . . . . . . . . . . . . . . . . . . . . . . . . 175 Accessories and
Modifications . . . . . . . . . . . . . . . . 259
Doing Your Own Work . . . . . . . . 259
Maintenance Records . . . . . . . . 361
Maintenance, General Information . . . . . . . . . . . . . . . . . . 348 Service (cont'd)
Parts Identification Label . . . . . 362
Scheduling Appointments . . . . . 372
Service Electric Parking
Brake Light . . . . . . . . . . . . . . . . . . . . 138
Services Special Application . . . . . . . . . . . 355
Servicing the Airbag . . . . . . . . . . . . . 89
Shift Lock Control Function Check, Automatic
Transmission . . . . . . . . . . . . . . . . . . 280
Shifting Into Park . . . . . . . . . . . . . . . . . . . . . . 197
Out of Park . . . . . . . . . . . . . . . . . . . 198
Shopping Bag Hooks . . . . . . . . . . . 111
Side Blind Zone Alert (SBZA) . . . 236
Signals, Turn and Lane-Change . . . . . . . . . . . . . . . . . 164
Spare Tire Compact . . . . . . . . . . . . . . . . . . . . . . 331
Special Application Services . . . . 355
Specifications and Capacities . . . . . . . . . . . . . . . . . . . . . 363
Speedometer . . . . . . . . . . . . . . . . . . . 130
StabiliTrak OFF Light . . . . . . . . . . . . . . . . . . . . . 140
Start Vehicle, Remote . . . . . . . . . . . 34
Starter Switch Check . . . . . . . . . . . 280