1995 GMC Sonoma Owner's Manual - Page 56

Ignition Switch Use your key to start your vehicle. The key lets you turn the ignition switch to fivedifferent positions. 1. OFF 2 2. RUN 5 Q 3 3. START 4. ACC 5. LOCK ACC (Accessory) - ACC lets you use things like the radio and the windshield wipers when the engine is off. To get into ACC,push in the key and turn it toward you. Your steering wheel will remain locked, justas it was before you inserted the key. I NOTICE: Don't operate accessories in the ACC position for long periods of time. Prolonged operation of accessories in the ACC position you could drain your battery and prevent from starting your vehicle. LOCK -This position locks your ignition, steering wheel and transmission. It's a theft deterrent feature. You will only be able to remove your key when the ignition is turned to LOCK. OFF - 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 engine is off (for example, if your vehicle is being pushed). RUN -This is the position for driving. START - This starts your engine. 2- 10