2006 GMC Yukon Owner's Manual - Page 209

A reading in the low pressure zone may be caused by a dangerously low oil level or some other problem causing low oil pressure. Check your oil as soon as possible. See "OIL PRESSURE LOW" under DIC Warnings and Messages on page 3-56 and Engine Oil on page 5-15. Security Light This light flashes when the vehicle security system is activated. {CAUTION: Do not 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. Notice: Lack of proper engine oil maintenance may damage the engine. The repairs would not be covered by your warranty. Always follow the maintenance schedule in this manual for changing engine oil. Cruise Control Light This light comes on whenever you set your cruise control. The light will go out when the cruise control is turned off. See Cruise Control on page 3-11 for more information. 3-49