1998 GMC Sonoma Owner's Manual - Page 69

Side Access Panel (Extended Cab) (If Equipped) Power Door Locks (If Equipped) Your vehicle may be equipped witha side access panel for convenience in loading and unloading cargo. If your vehicle has power door locks, the switch is located on the armrest. Remove the ignition key and press LOCK to lock all the doors at once. To unlock the doors, press the raised area next to the key symbol. To open the side accesspanel, first open the driver's front door. Then, use the handle on the panel to open it. You must close the side access panel before you can close the driver's door. 2-5