Chevrolet Low Cab Forward 6.0L Gasoline Engine 3500/4500 Series (GMNA-
Localizing-U.S.-12533400) - 2019 - CRC - 11/19/18
Driving and Operating
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cancelled entirely after the engine
coolant temperature rises above
65 °C (149 °F).
Engine Heater
Engine Block Heater
If the vehicle is parked in a garage,
the block heater should not be
needed until the garage temperature
drops below
−
23°C (
−
10°F)
regardless of outside temperature.
The engine block heater is designed
to warm the block area that will let
the engine run faster. To use the
heater:
1. On single cab vehicles, tilt
the cab.
2. Unwrap the electrical cord and
remove the protective cap.
3. Plug the cord into any
three-prong 110 volt outlet
(normal household current).
It may require several hours to
sufficiently heat the engine.
Outside temperature, oil
viscosity, etc., will affect how
long the block heater should
remain plugged in. Contact
your dealer for the conditions in
your area.
4. After using the heater, be sure
to restore the cord properly, to
help keep it away from moving
engine parts.
If the cord is too short, use a heavy
duty, three-prong extension cord. Do
not use an extension cord such as
you would use for a lamp, because
the cord may overheat.
The engine should go through a
warm-up period to warm up the
engine oil before placing engine
under load. This will ensure proper
lubrication of the engine. See
High Idle System
Use high idle mode to increase
engine idle speed to 1,200 r/min
when the vehicle is stationary.
