2009 GMC Acadia Owner's Manual - Page 167

Instrument Panel 3-45 Security Light The light goes out when the fog lamps are turned off. See Fog Lamps on page 3-13 for more information. Cruise Control Light The oil pressure light should come on briefly as the engine is started. If it does not come on have the vehicle serviced by your dealer/retailer. If the light comes on and stays on, it means that oil is not flowing through the engine properly. The vehicle could be low on oil and might have some other system problem. This light flashes when the security system is activated. For more information, see Theft-Deterrent Systems on page 2-16. Fog Lamp Light This light comes on whenever the cruise control is set. The light goes out when the cruise control is turned off. See Cruise Control on page 3-9 for more information. The fog lamp light comes on when the fog lamps are in use.