1998 GMC Suburban Owner's Manual - Page 91

LOCK (B): This position locks your ignition, steering wheel and transmission. a theft-deterrent feature. It's You will only be ableto remove your key when the ignition is turned to LOCK. Starting Your Gasoline Engine If you have a diesel engine, see"Starting Your Diesel Engine" in the Diesel Engine Supplement. Move your shift lever toPARK (P) or NEUTRAL (N). Your engine won't start in any other position -- that's a safety feature. To restart when you're already moving, use NEUTRAL (N) only. OFF (C): This position letsyou turn off the engine but still turn the steering wheel. Itdoesn't lock the steering wheel like LOCK. Use OFF if you must have your vehicle in motion while the engine off (for example, if is your vehicle is being pushed). RUN (D): This isthe position for driving. START (E): This position starts your engine. NOTICE: Don't try to shift to PARK (P) if your vehicle is moving. If you do, you could damage the transmission. Shift to PARK (P) only when your vehicle is stopped. r I ~ ~~ NOTICE: If your key seems stuck in LOCK andyou can't turn it, be sure you are using the correct key; if so, is it all the way in? If it is, then turn the steering wheel left and rightwhile you turn the key hard. But turn key only withyour hand. the Using a tool to force it could break thekey or the ignition switch. If none of this works, then your vehicle needs service. I I 1 How to Start the Engine 1. Without pushing the accelerator pedal, turn your ignition key to START. When the engine starts, let go of the key. The idle speed will go down as your engine gets warm. 1