2019 CHEVROLET LOW CAB FORWARD lights

Chevrolet Low Cab Forward 5.2L Diesel Engine 4500/5500 Series (GMNA-
Localizing-U.S.-12407814) - 2019 - crc - 12/13/17
Vehicle Care 283
3. To install the lamps, performthe same sequence of
operations in reverse, taking
care to turn the connector
clockwise to lock it securely.
If the socket is not locked securely,
water could get inside the lamp and
lead to a breakdown.
Replacing a Front Turn
Signal Lamp
Do not replace a bulb with other
than the specified wattage. This will
cause abnormal flashing,
particularly for turn signal lamps.
When replacing a bulb, make sure
the light switch is OFF.
1. While referring to “Replacing
the Headlights”, tilt the turn
signal lamp assembly down
toward the front of the vehicle
and remove it.
2. Disconnect the connector for the turn signal light and then
remove the socket.

Chevrolet Low Cab Forward 5.2L Diesel Engine 4500/5500 Series (GMNA-
Localizing-U.S.-12407814) - 2019 - crc - 12/13/17
284 Vehicle Care
3. Pull the bulb from the socketand replace it with a new one.
4. To install the lamps, perform the same sequence of
operations in reverse, taking
care to turn the connector
clockwise to lock it securely.
If the socket is not locked securely,
water could get inside the light and
lead to a breakdown.
Roofmarker Lamps
1. Loosen the screws (2) and remove the lens (1). 2. Remove the bulb (3) from the
socket (4) and replace it with a
new one.
3. To install the lights, follow the removal procedure in reverse.
If the screwing procedure is
inadequate, water may infiltrate into
the lamp unit.
Sidemarker Lamps
(Including Turn Signal
and Cornering Lamps)
Do not replace a bulb with other
than the specified wattage. This will
cause abnormal flashing,
particularly for turn signal lamps.
When replacing a bulb, make sure
the light switch is "OFF".
1. Open the front door, remove the rubber cap (1) in the lower
part of the door, and loosen
the nut (2).

Chevrolet Low Cab Forward 5.2L Diesel Engine 4500/5500 Series (GMNA-
Localizing-U.S.-12407814) - 2019 - crc - 12/13/17
Vehicle Care 285
2. Slide the cornering lamp (3)and the side turn signal lamp
forward relative to the vehicle.
Disconnect the clip (1) on the
lamp’s rear side from the door
panel (2) and pull out the lamp.
If you pull out the light rear
section by too much when
removing the clip on the rear
side, the clip on the lamp front
side may be damaged.
3. When the clip (1) has been
removed, pull the lamp out
while sliding it out toward the
rear of the vehicle. 4. Loosen the socket by turning it
counterclockwise.
5. Pull the bulb out from thesocket and replace it with a
new one.
6. To install the lights, perform the same sequence of operations
in reverse taking care of the
following points:
A. Turn the socket clockwiseto lock securely.
If the socket is not locked
securely, water could get
inside the light and lead to
a breakdown.
B. Insert the clip on the backof the rear part of the light
into the door panel.
C. Push the front part of the light into the door panel,
and insert the clip on the
back of the front part of the
light in the door panel.

Chevrolet Low Cab Forward 5.2L Diesel Engine 4500/5500 Series (GMNA-
Localizing-U.S.-12407814) - 2019 - crc - 12/13/17
286 Vehicle Care
D. Open the front door, tightenthe nut from the inside of
the door, and install the
rubber cap.
Taillamps, Turn Signal,
Stoplamps, and Back-Up
Lamps
1. Turn Signal Lamp
2. Taillamp/Stoplamp
3. Back-Up Lamp
4. Lens
1. Loosen the screws and remove the lens.
2. Loosen the bulb by turning it counterclockwise while
pressing on it.
3. To install the lights, follow the removal procedure in reverse.
License Plate Lamp
1. Bulb
2. Lens
3. Screw
4. Cover
1. Loosen the screws and removethe cover.
2. Remove the lens.
3. Loosen the bulb by turning it counterclockwise while
pressing on it.
4. To install the lights, follow the removal procedure in reverse.

Chevrolet Low Cab Forward 5.2L Diesel Engine 4500/5500 Series (GMNA-
Localizing-U.S.-12407814) - 2019 - crc - 12/13/17
Vehicle Care 287
Interior Lamps
1. Remove the lens and pull outthe bulb.
2. To install the lights, follow the removal procedure in reverse.
Electrical System
Electrical System
Overload
Electrical System
Following the after-delivery service,
it is the owner's responsibility to
check all wiring periodically for
cracked, chafed or oil-soaked
insulation and maintain it in a clean
and tight condition to ensure
satisfactory operation of the
electrical system.
Replacing the Fuses and Relays
Your vehicle is equipped with fuses
and fusible links to protect your
electrical wiring and equipment in
case of electrical overload.
When the lights do not come on or
flash, or the equipment in the
electrical system does not operate,
check to see if a fuse has blown. Fuses :
In case of an electrical
overload, the fuse will blow and stop
the flow of current in the circuit
before electrical components
become damaged.
The cause of the circuit overload
must be identified and corrected
before the blown fuse is replaced,
or else the new fuse will also blow.
Since different circuits handle
different amounts of current, fuses
of various ampere ratings are used.
Be sure to replace a blown fuse with
a fuse of the correct rating.
To know if a fuse is blown or not,
remove the suspected fuse and look
at the wire for a break. If the wire is
broken, replace the fuse with one of
equal amperage rating.
The amperage rating of each fuse is
molded in its head.
Fuses are installed in the fuse
panel.

Chevrolet Low Cab Forward 5.2L Diesel Engine 4500/5500 Series (GMNA-
Localizing-U.S.-12407814) - 2019 - crc - 12/13/17
294 Vehicle Care
No. Description Rating8 A/C 10A
Relay locations (1): No. Description
1 STARTER
2 ECM MAIN
3 NOX & DEF SENSOR
4 A/C COMPRESSOR
5 CONDENSER FAN
6 RR DOME LIGHT
7 SCR HEATER VALVE
8 MARKER LIGHT
9 –
10 –
11 FUEL HEATER When Slow-blow Fuses Blow Out
Slow-blow fuses protect the
electrical circuits, and they are
installed so that they can be quickly
replaced if there is a malfunction.
If an overload exists in the circuit
from the battery, the slow-blow fuse
will blow out before the wiring
harness is damaged to protect the
electrical circuitry. InspectionWhen the headlights and other
devices in the electrical system do
not work, but there is no problem
with the fuses, check the
slow-blow fuse.
The slow-blow fuse is blown if it
looks like the illustration.
Immediately contact the nearest
dealer.

Chevrolet Low Cab Forward 5.2L Diesel Engine 4500/5500 Series (GMNA-
Localizing-U.S.-12407814) - 2019 - crc - 12/13/17
Vehicle Care 313
the negative (–) terminal which
is grounded (attached to the
engine block, or frame rail).
2. Position the vehicle with the good (charged) battery so that
the booster (jumper) cables will
reach. But never let the
vehicles touch. Also, be sure
the booster cables to be used
do not have loose or missing
insulation.
3. In both vehicles, turn off the ignition (engine control) switch
and all lights and accessories
except the hazard flasher or
any lights needed for the work
area. In both vehicles, apply
the parking brake firmly and
move the selector lever to the
"P" position.
4. Unlatch the latches (1) and
remove the battery cover (2)
and connect the jumper cables
in the numbered sequence in
the drawing below. Make sure
the cable clamps do not touch
any other metal parts. Make sure the cables are not
on or near pulleys, fans or
other parts that will move when
the engine is started.
When it is difficult to start the
engine in a cold area, first start
the engine of the vehicle with
the booster battery or batteries
and a few minutes after that
start the engine of the disabled
vehicle.

Chevrolet Low Cab Forward 5.2L Diesel Engine 4500/5500 Series (GMNA-
Localizing-U.S.-12407814) - 2019 - crc - 12/13/17
Vehicle Care 317
3. No vehicle should ever betowed over 88 km/h (55 mph).
4. Loose or protruding parts of damaged vehicles should be
secured prior to moving.
5. A safety chain system completely independent of the
primary lifting and towing
attachment must be used.
6. Operators should refrain from going under a vehicle which is
being lifted by the towing
equipment unless the vehicle is
adequately supported by safety
stands.
7. No towing operation which for any reason jeopardizes the
safety of the wrecker operator
or any bystanders or other
motorists should be attempted.Appearance Care
Exterior Care
Exterior Finish
The paint finish on your vehicle
provides beauty, depth of color,
gloss retention and durability.
While cleaning the vehicle, do not
grip the roof marker lights to prevent
damage or water leakage.
Washing
The best way to preserve your
vehicle's finish is to keep it clean by
washing it often.
Wash the vehicle in lukewarm or
cold water. Do not use hot water or
wash your vehicle in the direct rays
of the sun. Do not use strong soap
or chemical detergents. All cleaning
agents should be flushed promptly
from the surface and not allowed to
dry on the finish.
These vehicles are designed to
operate under normal environmental
conditions to withstand natural
elements. However, unusual conditions such as high-pressure
car washers may cause water to
enter inside the vehicle. If the
vehicle is operated with foreign
material adhering to the exterior,
this material may react chemically
with paint, resulting in staining,
discoloration, rusting or corrosion of
components. Also, the material may
become trapped within mechanical
components, adversely affecting
their functions or forming an
aerodynamic resistance. In the
following cases, therefore, the
vehicle must be washed and all
foreign matter removed.
.
When soot, iron powder, dead
bugs, bird droppings, tree sap or
oily matter from coal tar and
smoke has adhered to painted
surfaces.
. When the vehicle has been
driven in coastal areas.
. When the vehicle has been
driven on roads where road
chemicals have been applied.
. When a large amount of mud or
dirt has adhered to the exterior.