CHEVROLET 2009 Silverado - Manual (Page 34)

Engine Coolant Temperature Gage
This gage shows the engine coolant temperature.
It also provides an indicator of how hard the vehicle
is working. During a majority of the operation, the gage
reads 210° F (100° C) or less. If a load is being pulled or
going up hills, it is normal for the temperature to fluctuate
and go over the 235° F (113° C) mark. However, if the
gage reaches the 260° F (125° C) mark, it indicates that
the cooling system is working beyond its capacity.
Oil Pressure Gage
The oil pressure gage shows the engine oil pressure in
psi (pounds per square inch) when the engine is running.
Canadian vehicles indicate pressure in kPa (kilopascals).
Oil pressure should be 29 to 80 psi (200 to 550 kPa).
In certain situations, such as long extended idles on hot
days, it could read as low as 15 psi (105 kPa) and still be
considered normal.
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