I had the same problem with my 2000. I suggest a new vac pump as my reseal didn't work. I went with a new PS pump too as the factory one always sucked. It just puked a puddle one day like yours.

1967 Dodge Dart GT 3.23 sure grip 8.75/727/360 .020 over w/edelbrock heads 2000 Dodge Ram 2500 Quad Cab CTD