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Chevrolet Impala Owner Manual (GMNA-Localizing-U.S./Canada-11348316) -
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200 Driving and Operating
barriers). During a trip, the LCA
system is not operational until the
vehicle first reaches a speed of
24 km/h (15 mph).
LCA displays may not come on
when passing a vehicle quickly, for
a stopped vehicle, or when towing a
trailer. 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. LCA may alert to objects
attached to the vehicle, such as a
trailer, bicycle, or object extending
out to either side of the vehicle.
Attached objects may also interfere
with the detection of vehicles. This
is normal system operation; the
vehicle does not need service.
LCA may not always alert the driver
to vehicles in the next lane over,
especially in wet conditions or when
driving on sharp curves. The system
does not need to be serviced. The
system may light up due to
guardrails, signs, trees, shrubs, andother non-moving objects. This is
normal system operation; the
vehicle does not need service.
LCA may not operate when the LCA
sensors in the left or right corners of
the rear bumper are covered with
mud, dirt, snow, ice, or slush, or in
heavy rainstorms. For cleaning
instructions, see "Washing the
Vehicle" under
Exterior Care0281.
If the DIC still displays the system
unavailable message after cleaning
both sides of the vehicle toward the
rear corners of the vehicle, see your
dealer.
If the LCA displays do not light up
when moving vehicles are in the
side blind zone or rapidly
approaching this zone and the
system is clean, the system may
need service. Take the vehicle to
your dealer.
When LCA is disabled for any
reason other than the driver turning
it off, the Lane Change Alert On
option will not be available on the
personalization menu.Radio Frequency Information
See Radio Frequency Statement
0 317.
Lane Departure
Warning (LDW)
If equipped, LDW may help avoid
crashes due to unintentional lane
departures. It may provide an alert if
the vehicle is crossing a lane
without using a turn signal in that
direction. LDW uses a camera
sensor to detect the lane markings
at speeds of 56 km/h (35 mph) or
greater.
{Warning
The LDW system does not steer
the vehicle. The LDW system
may not:
. Provide enough time to
avoid a crash.
. Detect lane markings under
poor weather or visibility
conditions. This can occur if
(Continued)
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Chevrolet Impala Owner Manual (GMNA-Localizing-U.S./Canada-11348316) -
2018 - CRC - 8/22/17
Driving and Operating 201
Warning (Continued)
the windshield or
headlamps are blocked by
dirt, snow, or ice; if they are
not in proper condition; or if
the sun shines directly into
the camera.
. Detect road edges.
. Detect lanes on winding or
hilly roads.
If LDW only detects lane
markings on one side of the road,
it will only warn you when
departing the lane on the side
where it has detected a lane
marking. 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 LDW in
bad weather conditions.
How the System Works
The LDW camera sensor is on the
windshield ahead of the rearview
mirror.
To turn LDW on and off, press
@on
the instrument panel to the left of
the steering wheel. The control
indicator will light when LDW is on.
When LDW is on,@is green if
LDW is available to warn of a lane
departure. If the vehicle crosses a
detected lane marking without using
the turn signal in that direction,
@
changes to amber and flashes.
Additionally, there will be three
beeps on the right or left, depending
on the lane departure direction.
When the System Does Not
Seem to Work Properly
The system may not detect lanes as
well when there are:
. Close vehicles ahead.
. Sudden lighting changes, such
as when driving through tunnels.
. Banked roads.
If the LDW system is not functioning
properly when lane markings are
clearly visible, cleaning the
windshield may help.
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 LDW off if these
conditions continue.
Page 341 of 345

Chevrolet Impala Owner Manual (GMNA-Localizing-U.S./Canada-11348316) -
2018 - CRC - 8/22/17
340 Index
Perchlorate MaterialsRequirements, California . . . . . . 215
Personalization Vehicle . . . . . . . . . . . . . . . . . . . . . . . 128
Power Door Locks . . . . . . . . . . . . . . . . . . . . . 38
Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Outlets . . . . . . . . . . . . . . . . . . . . . . . 106
Protection, Battery . . . . . . . . . . . . 145
Retained Accessory (RAP) . . . 172
Seat Adjustment . . . . . . . . . . . . . . . . 54
Windows . . . . . . . . . . . . . . . . . . . . . . . 45
Pregnancy, Using Seat Belts . . . . 66
Privacy Vehicle Data Recording . . . . . . . 319
Program
Courtesy Transportation . . . . . . 313
Proposition 65 Warning,
California . . . . . . . . . . . .214, 233, 276, Back Cover
R
Radio Frequency Statement . . . . 317
Reading Lamps . . . . . . . . . . . . . . . . . 143
Rear Seats . . . . . . . . . . . . . . . . . . . . . . 60
Rear Vision Camera (RVC) . . . . . 192
Rearview Mirrors . . . . . . . . . . . . . . . . 45 Rearview Mirrors (cont'd)
Automatic Dimming . . . . . . . . . . . . . 45
Reclining Seatbacks . . . . . . . . . . . . . 55
Recommended Fluids and Lubricants . . . . . . . . . . . . . . . . . . . . . 301
Records Maintenance . . . . . . . . . . . . . . . . . . 303
Recreational Vehicle Towing . . . . 279
Reimbursement Program, GM Mobility . . . . . . . . . . . . . . . . . . . 311
Remote Keyless Entry (RKE) System . . . . . . . . . . . . . . . . . . . . . . . . . 28
Remote Vehicle Start . . . . . . . . . . . . 34
Replacement Parts Airbags . . . . . . . . . . . . . . . . . . . . . . . . . 80
Maintenance . . . . . . . . . . . . . . . . . . 302
Replacing Airbag System . . . . . . . . 80
Replacing LATCH System Parts after a Crash . . . . . . . . . . . . . 93
Replacing Seat Belt System Parts after a Crash . . . . . . . . . . . . . 68
Reporting Safety Defects Canadian Government . . . . . . . . 318
General Motors . . . . . . . . . . . . . . . 318
U.S. Government . . . . . . . . . . . . . 318
Restraints Where to Put . . . . . . . . . . . . . . . . . . . 86 Retained Accessory
Power (RAP) . . . . . . . . . . . . . . . . . . 172
Reverse Tilt Mirrors . . . . . . . . . . . . . . 44
Roads Driving, Wet . . . . . . . . . . . . . . . . . . 160
Roadside Assistance Program . . . . . . . . . . . . . . . . . . . . . . . 311
Roof Sunroof . . . . . . . . . . . . . . . . . . . . . . . . . 47
Rotation, Tires . . . . . . . . . . . . . . . . . . 262
Routing, Engine Drive Belt . . . . . . 306
Running the Vehicle While Parked . . . . . . . . . . . . . . . . . . . . . . . . 174
S
Safety Defects ReportingCanadian Government . . . . . . . . 318
General Motors . . . . . . . . . . . . . . . 318
U.S. Government . . . . . . . . . . . . . 318
Safety Locks . . . . . . . . . . . . . . . . . . . . . 39
Safety System Check . . . . . . . . . . . . 67
Scheduling Appointments . . . . . . . 313
Seat Belts . . . . . . . . . . . . . . . . . . . . . . . 62 Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Extender . . . . . . . . . . . . . . . . . . . . . . . . 67
How to Wear Seat BeltsProperly . . . . . . . . . . . . . . . . . . . . . . . 63
Lap-Shoulder Belt . . . . . . . . . . . . . . 64