My 1999 base Voyager (Caravan) has manual windows. They roll down without much trouble, but cranking them up is very difficult. Any recommendations for where and how to lubricate them to make this easier?

 

Start with lubricating the tracks and guide wheels.

 

Add the pivot points for the gears and the gears themselves to that - any moving parts will create drag.

However, just lubricating may only be a temporary fix. The factory lube is a light grease which collects dirt over time - you will probably have to remove the regulator for a thorough cleaning before re-lubricating it for a long term solution.

It could also just be worn out and needing replacement.