It is located in the trunk.
in the trunk
There is a button on back underneath the spoiler.
In the trunk. Under the wooden board.
The gas cap release for a Mitsubishi Diamante is located in the trunk, on the left side. There is a cable with a handle on it running down from the top left of the trunk, and you'll need to pull it to manually release the gas cap.
there are plastic covers over them on the inside of the trunk that you pop off
look in the trunk. if it has the relay button, it would prolly be on one of the sides, usually in a compartment. it would be a red button if im right. hope i helped
Check in the trunk.
The lock and unlock switch for the doors unlocks the trunk too.Push the switch to the left and hold it.
The rear "trunk" (decklid) release mechanism is an option, if equipped, and is located on the right side of the dash protrusion on the dash. It will be a switch that shows an opening "trunk". If this switch is not there, then the car was not equipped with rear trunk release. If you are trying to get into a Fiero trunk that does not have a decklid release mechanism or a broken one, and you have lost the keys, then you will have to actually break into the car to open the trunk. Typically, if the outer key switch is remove, you can insert a long screwdriver into the hole and pop the trunk lock.
My trunk release in mine is in the center console behind the emergency brake. There is a button inside.
The trunk switch on the dash should still operate unless the trunk release switch inside the glove box has been turned off.