Hi! I own a 2007 Grand Caravan. I bought it last summer at 84 000km (52 000 miles). since day one I have a strange feeling about the transmission: when the vehicule is almost at a complete stop, i feel a little bump (gear changing) and a small backlash from complete stop to drive. So I go to the dealer and the guy tells me everything is fine. Anyway, my van is still covered by warranty. Several weeks pass and we leave for... vacations! We are fully loaded and drive for about 5 to 6 hours. I stop to check some informations, everything is fine. Put the shifter in D and hit back the highway. Did I told you we're fully loaded? Speeding up to merge with the traffic, the transmission stays in the low gear for a long period. So long, I have to release the gas pedal and put the shifter in neutral to stop the "kickdown-like-mode". Put back the shifter in drive and everything is fine. So fine that we arrive at destination and notice nothing. The next day, surprise: no more Reverse! Completly blowned. Here is a list of what they changed:
P/N DESC QTY
5103047AC SEAL PKG 1
4659934 RING 1
4800082AA BEARING 1
4505621 RING 1
4531678AB DISC 4
4659053 PLATE 3
4531556AD PLATE 1
4505622 RING 1
4659635 DISC 2
4659053 PLATE 1
4377194 PLATE 1
4377195 (SPECIAL ORDER)RING
4431612 RETAINER 1
4412209 BEARING 1
68800255AA RET PKG 1
4412395 RING 1
4799858AA RING 1
4431617AB COVER 1
5017518AB HUB 1
5010884AA SEALER 1
4659635 DISC 2
4377195 RING 1
5011115AA GASKET 1

After the repair, I still feel some "bump" with gear change. I paid for an upgrade for the transmission software last november. Still some "bumps". Last weekend, drove for about 3 hours, stop five minutes, go back on the highway... You got it! BLOWN AGAIN!!! Here is the list :
P/N DESC QTY
5078335AB SELENOID 1
5078336AA SENSOR 1
4531678AB DISC 6
4659053 PLATE 4
4377194 PLATE 1
4531556AD PLATE 1
4800256AA PISTON 1
5102880AA PKG "D" 1
5010884AA PUTTY 1
VU02153AC LIQUID 2
4412522AB SEAL 2
4412475 SEAL 1
4431612 HOLDER 1
6501715 CIRCLIP 1
4864505AB HOLDING KIT 1
5073039G FASTENER 3
6030441G HOLDER 2
Here are my questions:
1- Are "bumps" are normal/ok?
2- Have you heard of similar failure?
3- "Same" problem, different parts. I'm getting confused
4- Will it happens gain? 8(
5- ...Any idea???
6- Is there a retrofit kit with a good old clutch pedal and a big shifter stick!?
Please help 8)
Ken McCormick