GMC 1996 Savana Van Owner's Manual page 110

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
Oil pressure may vary with engine speed, outside
temperature and oil viscosity, but readings above the
lowpressure zone indicate the normal operating range.
A reading in the low pressure zone may be caused by a
dangerously low oil level or other problem causing low
oil pressure. Check'your oil as soon as possible.
Don't keep driving if the oil pressure is low. If
you do, your engine can become so hot that it
catches fire. You or others could be burned.
Check your oil as soon as possible and have your.
vehicle serviced.
I
NOTICE:
'1
Damage to your engine from neglected oil
problems can be costly and is not covered by
your warranty.