not along the running board on the driver's side, simple pull up lever? Perhaps is automatic, with a solenoid what disengages the lock whenever the key fob is present.
http://www.youtube.com/watch?v=eBv-LiEwe9c says you unlock the car and press the lid and it will pop open.
When I had a bonneville, the only way to open the gas tank was to double click on the door opener, maybe it's the same ?
KBRO got it right! Thank you. The car must be unlocked and you simply press the door on far right center and it releases.
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