I will try give you best problem description that I can. In December 2011 my trany starts slipping, I have send the transmission to repair shop for an general overhaul. They have changed necessary parts like clutches, planetary gear etc. and recommend changing solenoid pack too, but I need to save some money before Christmas and decide changing solenoid pack only if necessary. When I put the transmission back in my car it's still slipping. Then I have read an article about solenoid pack rebuilding ( thanks Jeremy ) and decide try something like this. Now I have three solenoid packs. One from 98 GC 3,3L , this is on this picture above. I have tested this solenoid pack in my car with repaired transmission, but they wont shift instead of revers gear. Second one is from my car1996 GC 3,8L AWD, but this solenoid pack shifts only first gear and reverse. Third solenoid pack is from 1990 3,0L Caravan. This pack will shift only to first, second and reverse gear. Right now I'm driving wit solenoid pack from 1996 Town & Country 3,8L borrowed from my friend. I want to put first pack in to my car, because this one isn't so loud like those other two, but I'm pretty unsure if rebuilding this pack isn't waste of time when I can't see any damage on this pack.