1999 GMC Sonoma Owner's Manual - Page 73

yellowblue Key Release Button The key cannot be removed from the ignition of manual transmission vehicles unless the key release button is used. Retained Accessory Power Your vehicle is equipped with a Retained Accessory Power (RAP) feature which will allow certain features of your vehicle to continue to work up to 20 minutes after the ignition key is turned to OFF. Your radio and power windows will work when the ignition key is in RUN or ACCESSORY. Once the key is turned from RUN to OFF, these features will continue to work for up to 20 minutes or until a door is opened. Starting Your Engine Automatic Transmission To remove the key on manual transmission vehicles, turn the key to OFF. Then turn the key to LOCK while pressing the key release button down at the same time. Pull the key straight out. On automatic transmission vehicles, turn the key to LOCK and pull it straight out. Move your shift lever to PARK (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. 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. 2-15