
Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10399647) - 2016 - crc - 5/25/16
86
Instruments and Controls
If this light comes on with the Refill
Diesel Exhaust Fluid (DEF) warning
light and the DEF warning light, refill
DEF as soon as possible.
See
“
Refill Diesel Exhaust Fluid
(DEF) Warning Light
”
under
Information Center (DIC) (Diesel
Only)
. See
Indicator Lamp (Check Engine
Light)
and
.
Gas Engines
If this light comes on while the
engine is running, this means the
engine is overheating and in
overheat protection mode. The
overheat protection mode alternates
firing groups of cylinders in order to
prevent engine damage. In this
mode, the engine loses power and
performance. This operating mode
allows your vehicle to be driven to a
safe place in an emergency. Driving
extended miles (km) and/or towing a
trailer in the overheat protection
mode should be avoided.
After driving in the overheated
engine protection mode, allow the
engine to cool before attempting
any repair to avoid engine damage.
The engine oil will be severely
degraded. Repair the cause of
coolant loss and change the oil. See
.
High-Beam On Light
This light comes on when the
high-beam headlamps are in use or
the headlamps are cycled between
high and low beams (passing
signal).
See
.
Daytime Running Lamps
(DRL) Indicator Light
This light comes on when the DRL
are on. If the vehicle is started
during the daytime with the lighting
switch off and the parking brake
released, the low beam headlamps
will come on at a reduced
brightness. The light will go out
when the lighting switch is
turned on.
See
.