[leadmagnet]

Is it the driver side sliding door? If so, with the driver door open, use your left hand to reach behind the driver seat and hold the manual door lock forward. Use your right hand to pull the outside door handle. If the door opens, it's the fuel filler door switch.

My '99 had similar problem, found out i had a bad switch on the fuel filler door. Normally when the fuel filler door is open, it locks the driver side sliding door, so it doesn't crush the ffd. i replaced the lock, the motor, everything till we figured it out. My Mechanic didn't charge me for the switch because he already replaced all the other stuff...