1998 GMC Safari Owner's Manual - Page 100

Ignition Positions Use your ignition key to start your vehicle. The ignition key letsyou turn the ignition switch to five different positions. NOTICE: Don't operate accessories in the ACCESSORY position for long periods of time. Prolonged operation of accessories in the ACCESSORY position could drain your battery and prevent you from starting your vehicle. LOCK (B): This position locks your ignition, steering wheel and transmission shift lever in PARK (P). It's a theft-deterrent feature.You will only be able to remove your key when the ignition is turned LOCK. to OFF (C): This position lets you turn off the engine but still turn the steering wheel. Use OFF if you must have your vehicle in motion while the engineoff (for is example, if your vehicleis being towed). A E RUN (D): This is the position driving. for START (E): This starts your engine. ACCESSORY (A):This position lets you use things like the radio and the windshield wipers the when engine is off.To get into ACCESSORY, push in the key and turnit toward you. Your steering wheel will remain locked, just as it was before you inserted the key.