While having a new transmission installed under warranty, the
dealer tested my caravan forgeting to put oil in engine. Dealer claimed the knock noice was there when I had the vehicle towed in for the tranny work. It was my word verses the dealer and this is the reason
I never use the dealer for repair 
but this was the only way to get the tranny warranty.
Anyway, my '96 Grand Caravan LE W/3.8L engine W/100K miles has a terrible crank bearing knock. I've been told that there's a crank & bearing kit that can be installed without removing the engine. Is this true and has anyone done this?