I posted this for a friend.
That model(s) came with two rear door options
1) Swingout
2) Fold flat of a flap

Aparently, if I can get hold of a technical drawing there are suppose to be some plates added to the rear door to strengthen the door to handle the latch for the swing arm. These plates can get loose as well adding to the rattle.

some help hint idea? <img src="/forums/images/graemlins/scared.gif" alt="" />

Maintenace is high but woth it.
Isuzu goes places!