1999 Chevrolet Silverado 1500 Pickup Owner's Manual - Page 87

yellowblue NOTICE: If your key seems stuck in LOCK and you 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 right while you turn the key hard. But turn the key only with your hand. Using a tool to force it could break the key or the ignition switch. If none of this works, then your vehicle needs service. Key Release Button (Manual Transmission) The ignition key cannot be removed from the ignition of manual transmission vehicles unless the key release button is used. To remove the key on manual transmission vehicles, turn the key to OFF, then press the button and turn the key to LOCK. Do not hold the button in while turning the key to OFF. Pull the key straight out. 2-15