1999 Dodge Caravan

Even if the doors look ok. And they do not feel loose, the door ajar switches could go bad, with the van off and parked, move from one door to the other moving each door. The sliding door was usually where you can find a switch that self adjusts but needs replacement after a while, you could try moving the stiker slightly in to tighten it, if you find the bad door ajar switch, but it's best to just replace it, you'll see them on each door opening, ok