Chevrolet Kodiak 2008 Owner's Manual page 90

During this warm-up period, check your warning lights
and gages:
•
If oil pressure does not begin to rise within
15 seconds of starting, stop the engine and find the
cause. See Oil Pressure Gage on page 3-37 for
more information.
•
If the engine coolant temperature gage needle goes
into the hot area on the gage, stop the engine and
find the cause of the overheating. See Engine
Coolant Temperature Gage on page 3-35 for more
information.
•
If you have air brakes, the dual-needle air pressure
gage should read at least 115 psi (790 kPa) for both
service systems before you try to move the vehicle.
When air pressure is below 60 psi (420 kPa), the
LOW AIR light will come on and you will hear a tone
alarm. See Brake System Warning Light on
page 3-32 for more information. If the pressure does
not build up or drops during warm-up, stop the
engine and find the cause before you try to move the
vehicle. Recommended air pressure before driving is
120 psi (830 kPa). See Air Pressure Gage on
page 3-46 for more information.
2-24
•
The charging system light should come on when the
ignition key is turned to ON/RUN or START and
should go out when the engine is running above idle.
If the light does not go out or comes back on during
normal engine operation, have the charging system
checked right away. (This light tells you if the
generator is not charging; it does not reflect the
condition of the battery.) See Charging System Light
on page 3-30 for more information.
•
The voltmeter charge indicator gage tells you the
condition of your battery's charge. The gage should
be in the center area during engine operation. The
red area on the left indicates an undercharge
condition; the red area on the right indicates an
overcharge. If the gage is in either red area, have the
battery and charging system checked right away.
See Voltmeter Gage on page 3-31 for more
information.
Notice: Do not allow the engine to operate at low
idle for more than five minutes. This can cause
low engine operating temperatures which can affect
engine operation and reduce engine life. Engine
idle speed should be increased to 1200 rpm
whenever extended idle is required. Once started,
the engine should be placed under load to allow the
engine coolant temperature to reach 150°F (66°C)
before shutting off the engine.