My 2001 2500HD HO Quad Cab SWB required new ball joints at 30640 miles along with a new track bar and left tie rod to pitman connection. This was discovered by my local dealer who has performed all service since new. At 37207 miles the dealer is recommending new tie rod ends AND another set of ball joints. An email to Chrysler questioning if this is common and is there a way to get longer life components resulted in a canned response but no answers. Anyone with ideas on increasing the life span of these parts or availability of parts with longer life expectation? Also, any clues on greaseable lower ball joints?