1998 GMC Suburban Owner's Manual - Page 157

Oil Pressure Gage The oil pressure gage shows the engine oil pressure in psi (pounds persquare inch) when the engine is running. Canadian vehicles indicate pressure in kPa (kilopascals). ' A CAUTION: I 80 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 beburned. Check your oil as soon as possible and have your vehicle serviced. Oil pressure may vary with engine speed, outside temperature and oilviscosity, but readings above the low pressure zone indicate the normal operating range. I NOTICE: Damage to your engine from neglected oil problems can be costly and is not covered by your warranty. A reading in the low pressure zone be caused bya may dangerously low oil level or other problem causing low oil pressure. Check your as soon as possible. oil 2-79