97 power door locks going crazy....

the power door locks on my 97 sil. have been locking and unlocking by themselves at random but just when the van is running of course, i got locked out at the gas station the other day because of this.... anyone have any clues as to what might be the problem

Try looking under the carpet near the passenger seat for a multipin connector assembly. It gets damp and turns green. I know the '99 has this issue, as does the '00, '01, '02. Not sure on a '97 but its worth looking.