2018 CHEVROLET LOW CAB FORWARD horn

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
11254764) - 2018 - crc - 12/5/16
12 In Brief
Instrument Panel (Driver Side)
1. Instrument Panel Light LevelControl. See Instrument Panel
Illumination Control 095.
2. Power Take Off (PTO) Main Switch. See Power Take-Off
(PTO) 0215.
3. Power Take Off (PTO) Engine Speed Control Switch. See
Power Take-Off (PTO) 0215. 4. Rear Body Interior Light
Switch. See Cargo Lamp 096.
5. Instruments, Warning Lights and Indicator Lights. See
Instrument Cluster 070.
6. Horn Button. See Horn065.
7. Outside Rearview Mirror Heater Switch. See Heated
Mirrors 034. 8. Cruise Control Main Switch.
See Cruise Control 0202.
9. Hazard Warning Flasher Switch. See Hazard Warning
Flashers 094.
10. Diesel Particulate Filter (DPF) Switch. See Diesel Particulate
Filter 0161.
11. Odometer Check Switch. See Odometer 071.
Engine Oil Level Check Switch.
See Engine Oil 0223.
12. Door Lock Switch. See Power
Door Locks 033.

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
11254764) - 2018 - crc - 12/5/16
64 Instruments and Controls
Instruments and
Controls
Controls
Steering Wheel Adjustment . . . . 65
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Windshield Wiper/Washer . . . . . . 66
Power Outlets . . . . . . . . . . . . . . . . . 67
Cigarette Lighter . . . . . . . . . . . . . . . 67
Ashtrays . . . . . . . . . . . . . . . . . . . . . . . 68
Warning Lights, Gauges, and
Indicators
Warning Lights, Gauges, andIndicators . . . . . . . . . . . . . . . . . . . . 69
Instrument Cluster . . . . . . . . . . . . . 70
Speedometer . . . . . . . . . . . . . . . . . . 71
Odometer . . . . . . . . . . . . . . . . . . . . . . 71
Trip Odometer . . . . . . . . . . . . . . . . . 71
Tachometer . . . . . . . . . . . . . . . . . . . . 72
Fuel Gauge . . . . . . . . . . . . . . . . . . . . 72
Engine Coolant Temperature Gauge . . . . . . . . . . . . . . . . . . . . . . . . 72
Diesel Exhaust Fluid (DEF) Gauge . . . . . . . . . . . . . . . . . . . . . . . . 73
Seat Belt Reminders . . . . . . . . . . . 73
Battery Warning Light . . . . . . . . . . 73
Malfunction Indicator Lamp (Check Engine Light) . . . . . . . . . 74 Service Vehicle Soon Light . . . . 74
Brake System Warning Light
(Parking Brake Light) . . . . . . . . . 75
Antilock Brake System (ABS) Warning Light . . . . . . . . . . . . . . . . 77
Exhaust Brake Light . . . . . . . . . . . 78
Service Transmission Warning Light . . . . . . . . . . . . . . . . . . . . . . . . . 78
Automatic Transmission Fluid Temperature Warning Light . . . 78
Overdrive Off Light . . . . . . . . . . . . . 79
Wait-to-Start Light . . . . . . . . . . . . . 79
Engine Oil Pressure Light . . . . . . 79
Engine Oil Level Indicator Light . . . . . . . . . . . . . . . . . . . . . . . . . 80
Diesel Exhaust Fluid (DEF) Warning Light . . . . . . . . . . . . . . . . 80
Engine Shutdown Warning Light . . . . . . . . . . . . . . . . . . . . . . . . . 80
Idle Shutdown Light . . . . . . . . . . . . 81
Reduced Engine Power Light . . . . . . . . . . . . . . . . . . . . . . . . . 81
High-Beam On Light . . . . . . . . . . . 81
Daytime Running Lamps (DRL) Indicator Light . . . . . . . . . . . . . . . . 82
Cruise Control Light . . . . . . . . . . . 82
Information Displays
Driver Information Center (DIC) . . . . . . . . . . . . . . . . . 82
Vehicle Messages
Vehicle Messages . . . . . . . . . . . . . 86
Warning Buzzers . . . . . . . . . . . . . . 91

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
11254764) - 2018 - crc - 12/5/16
Instruments and Controls 65
Controls
Steering Wheel
Adjustment
{Warning
.Adjust the position of the
steering wheel before you
start driving.
. To reduce the risk of
personal injury, apply force
to the steering wheel to
make certain the steering
column is firmly locked
before driving. Also, do not
try to tilt or adjust the
steering wheel while the
vehicle is moving. If these
steps are not followed, the
steering column could move
suddenly while the vehicle
is in motion which could
cause a temporary loss of
steering control which may
result in personal injury or
death.
The steering wheel is adjustable up
and down as well as forward and
backward.
Before adjusting, position the seat
as desired.
1. Lift the lock lever toward you to unlock the steering column.
2. Sit in the correct driving position, and then move the
steering wheel up and down
and forward and backward to
select the optimum steering
wheel position. 3. Firmly lock the steering wheel
at the selected position by
moving the lock lever to the
lock position.
Horn
To sound the horn, press the pad
with a horn symbol on the steering
wheel.

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
11254764) - 2018 - crc - 12/5/16
268 Vehicle Care
No. Description Rating16 MIRROR HEATER 15A
17 IGNITION 2 10A
18 IGNITION 1 10A
19 – –
20 ECM 10A
21 METER 10A
22 ECU (BATT) 10A
23 MIRROR 10A
24 AUDIO, ACC 15A
25 HORN 15A
26 TURN, HAZARD 15A
27 TAIL LAMPS 10A
28 ILLUMI- NATIONS 10A
29 CORNERING LAMPS 10A
30 AIR CONDITIONER 10A
31 – –
32 – – No. Description Rating
33 – –
34 – –
D-1 CIGAR 20A
D-2 ACCESS- ORIES SOCKET 15A
D-3 POWER SOURCE 20A
D-4 – –

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
11254764) - 2018 - crc - 12/5/16
Vehicle Care 269
Relay LocationRelay locations:
No. Description
1 STOP LAMP
2 DAYTIME RUNNING LAMP
3 KEY ON
4 TCM
5 PARKING/NEUTRAL
6 WIPER MAIN
7 HORN
8 WIPER HI LO
9 TRAILER BRAKE
10 –/REAR POWER
WINDOW (if
equipped)
11 –/CHARGE (ENG
RUN) - Gasoline
12 POWER WINDOW
13 HEAD LAMP LO
14 VACUUM PUMP
15 HEAD LAMP HI

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
11254764) - 2018 - crc - 12/5/16
292 Vehicle Care
into contact with the horns or the
bumper. (If towing chains contact
the bumper, then remove the
bumper.)
1. Horns
2. Bumper
After Towing
After towing the vehicle, block the
rear wheels and install axle shafts
or driveshaft.
Apply the parking brake before
disconnecting from the towing
vehicle.Front End Towing (All Wheels On
the Ground)
Your vehicle may be towed on all
wheels provided the steering is
operable. Remember that power
steering and brakes will not have
power assist. There must be a tow
bar installed between the tow
vehicle and the disabled vehicle.
Towing with all wheels on the
ground
1. Bumper
2. Tow Hook
3. Front Axle
4. Towing Guide
5. Towing Chain
To prepare a disabled vehicle for
front end towing with all wheels on
the ground, the following steps are
necessary:
.Block the rear wheels of the
disabled vehicle.
. Disconnect the driveshaft at the
rear axle. Secure the driveshaft
to the frame or crossmember.
When towing, disconnect the
driveshaft at the rear axle to ensure
the transmission is not damaged.
The rear end of the driveshaft must
be disconnected and safely secured
if the 80 km (50 mi) or 48 km/h
(30 mph) is exceeded.
Provide wood blocking to prevent
towing chains and bar from coming
into contact with the bumper.
If there is damage or suspected
damage to the rear axle, remove the
axle shafts.
Cover the hub openings to prevent
the loss of lubricant or entry of dirt
or foreign objects.

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
11254764) - 2018 - crc - 12/5/16
318 Service and Maintenance
Recommended Daily
(Pre-operation) Inspections
These checks are in addition to, not
instead of, any legally required daily
inspections. See related topics
under "Maintenance Schedule",
especially if problems are found.
For safe and comfortable driving,
keep record of the distances driven
and the condition of the vehicle
during operation. Perform
inspections at appropriate intervals,
and perform maintenance in
accordance with the findings of the
inspections. If an inspection reveals
an abnormality or there was an
abnormality the previous time the
vehicle was driven, have the vehicle
repaired by the nearest dealer
before it is driven again.1. Components that showed abnormalities during the
previous operation
.Check components that
showed abnormalities
during the previous
operation 2. Checks performed at the
engine
.Fan belt looseness and
damage
. Engine oil level
. Engine coolant level
. Power steering fluid level
3. Checks performed from the driver's seat
.Brake fluid level
. Brake pedal free play
. Operation of meters,
gauges and warning/
indicator lights
. Engine startability,
abnormal noise and color of
exhaust gases
. Parking brake lever stroke
. Windshield washer fluid
spray condition and
windshield wiper
effectiveness
. Windshield washer fluid
level .
Steering wheel position and
free play
. Operation of horn and turn
signal lights
. Door lock operation
4. Checks performed during a walk around the vehicle
.Illumination, flashing,
contamination, damage and
obstruction of lights
. Contamination, damage ad
obstruction of windows,
mirrors and reflectors
. Leaf spring damage
. Oil, engine coolant, fuel,
brake fluid and power
steering fluid leaks
. Water separator
5. Checking wheels and tires .Air pressure
. Cracks and other damage
. Abnormal wear
. Tread depth
. Mounting condition of all
wheel nuts

Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
11254764) - 2018 - crc - 12/5/16
324 Service and Maintenance
one side, unusual sounds when
braking, increased brake pedal
travel or harder pedal. The front and
rear brakes are attached to an auto
adjuster mechanism. If there are no
defects, as the pedal travel is
properly maintained, adjustments
are not necessary. Check regularly
that the brake fluid reservoir
(left-hand side of the instrument
panel) or HBB reservoir (5500HD,
5500XD models: left side behind the
cab) is properly filled and check for
fluid leaks. Any of these conditions
could indicate the need for brake
system inspection and/or service.
G: Exhaust System :Be alert for
any changes in the sound of the
exhaust system or any smell of
fumes. These are signs the system
may be leaking. Have it checked
and/or repaired at once. (Refer to
"Engine Exhaust Emissions Caution
(Carbon Monoxide)" under Engine
Exhaust 0159).
H: Windshield Wipers and
Washers : Check operation and
condition of the wiper blades. Check
the flow of the washer spray. I: Defroster :
Turn the outlet
selector knob to "Defroster" and the
fan speed control knob to the fully
clockwise position. Then check the
airflow from the ducts at the inside
base of the windshield.
J: Rearview Mirrors and Sun
Visors : Check that friction joints
hold mirrors and sun visors in place.
K: Horn : Sound the horn, now and
then, to be sure it works.
L: Lap-Shoulder Belts : Check the
seat belt system (including webbing,
buckles, latch plates and anchors)
for proper operation, and for
damage.
M: Seat Adjusters : When
adjusting the driver's manual seat,
be sure the seat adjusters latch by
pushing the seat forward and
backward. Do not attempt to adjust
the seat when the vehicle is in
motion.
N: Lamps : Check panel lighting,
warning lamps, indicator lamps and
interior lamps. On the outside,
check: license plate lamps, side
marker lamps, reflectors on outside mirrors, headlamps, parking lamps,
identification and clearance lamps,
taillights, brake lamps, turn signals,
cornering lamps, backup lamps and
hazard warning flashers. Have
headlamp aim checked immediately
if beams seem improperly aimed.
O: Glass, Mirrors, Lights and/or
Reflectors Condition :
Look for
broken, scratched, dirty or damaged
glass, mirrors, lamps or reflectors
that could reduce the view or
visibility, or cause injury. Replace,
clean or repair promptly.
P: Door Latches : Check that doors
close, latch and lock tightly. Check
for broken, damaged or missing
parts that might prevent tight
latching.
Q :Tilt Cab (Driving Position) : Be
sure the tilt lever is down and
locked.
R: Fluid Leaks : Check for fuel,
water, oil or other fluid leaks by
looking at the surface beneath the
vehicle after it has been parked for
a while. If you notice diesel fumes or
fluid at any time, have the cause
found and corrected at once.