2007 Buick Terraza Owner's Manual - Page 220

Emissions Inspection and Maintenance Programs Some state/provincial and local governments have or may begin programs to inspect the emission control equipment on your vehicle. Failure to pass this inspection could prevent you from getting a vehicle registration. Here are some things you need to know to help your vehicle pass an inspection: Your vehicle will not pass this inspection if the check engine light is on or not working properly. Your vehicle will not pass this inspection if the OBD (on-board diagnostic) system determines that critical emission control systems have not been completely diagnosed by the system. The vehicle would be considered not ready for inspection. This can happen if you have recently replaced your battery or if your battery has run down. The diagnostic system is designed to evaluate critical emission control systems during normal driving. This may take several days of routine driving. If you have done this and your vehicle still does not pass the inspection for lack of OBD system readiness, your GM dealer can prepare the vehicle for inspection. 220 Oil Pressure Light If your vehicle has low engine oil pressure, this light will stay on after you start your engine, or come on when you are driving. This indicates that your engine is not receiving enough oil. The engine could be low on oil, or could have some other oil problem. Have it fixed immediately by your dealer. The oil light could also come on in three other situations: • When the ignition is on but the engine is not running, the light will come on as a test to show you it is working. The light will go out when you turn the ignition on. If it does not come on with the ignition on, you may have a problem with the fuse or bulb. Have it fixed right away. • If you are idling at a stop sign, the light may blink on and then off. • If you make a hard stop, the light may come on for a moment. This is normal.