Wait-To-Start Light; Engine Oil Pressure Light; Engine Oil Level Indicator; Light - Chevrolet 4500HD Series 2019 Manual

Wait-to-Start Light

This light comes on when the
engine control switch is turned to
the ON position and goes out when
preheating is complete.
See Starting and Stopping the
Vehicle 0 168.

Engine Oil Pressure Light

This light should come on briefly
when the engine control switch is
turned to the ON position, and then
should go out after the engine is
started.
This light comes on when the
engine oil pressure has fallen below
the normal level while the engine is
running or the oil pressure across
the oil filter rises above the normal
level while the engine is running.
If the warning light comes on while
driving, immediately pull off to a
safe place and stop the engine.
Check the oil level in the engine
crankcase. If the oil level is normal,
restrictions are in the oil filter or
within the lubricating system. Have
the vehicle inspected at your dealer.
Do not run the engine with this light
on. It could damage the engine.
When this light comes on while
driving, a warning tone also sounds.
The oil level varies while the engine
is running right after it has stopped
or if the vehicle is on uneven
ground. As a result, the red engine
oil pressure warning light may
light up.
When checking the oil level, press
the engine oil level check switch on
level ground while the engine is
cool. The red engine oil pressure
Instruments and Controls
warning light in combination with the
green engine oil level indicator light
can indicate if the engine oil level is
OK or low.
While driving, this light will also
activate the engine alarm and
automatic shutdown system.
See Engine Oil Level Indicator Light
0 79 and Engine Oil 0 245.

Engine Oil Level Indicator

Light

When the engine oil level check
switch is pushed with the engine
control switch in LOCK, the green
engine oil level indicator light will
come on if the engine oil level
is OK.
See Engine Oil Pressure Light 0 79
and Engine Oil 0 245.
79