No the 07 still have the 48RE. The new 08's use a 68RE I think that is what it is called. The AISON is only available on the cab and chassis model 3500 and 4500's and 5500's. Still with that said I drove a new 08 model and that tranny felt great.

 

'07 with 5.9 = 48re.
'07 with 6.7 C & C = Aisin
'07 with 6.7 non C & C = 68rfe

 

^^^^^^^^Exactly!

 

well i know for sure its not a 6 speed in mine. other then i dont know what model it is, but it is a 4 speed auto. ill look under it tomorrow though since i just got tonight and its dark out !
also i can barely feel it lock up, if at all? my 2003 you could fell that thing lock up !

 

Hmmm...

Goerend tranny + lock up switch = lockup in 1,2,3,4 = Sweet!

 

yeah yeah!!!! LOL! When warranty runs out and the tranny is toast I'm gonna do something to mine.

Bullit what year is yours? If it's a four speed and it's newer than 03 it's a 48RE. If it's a 6.7 it's a six speed.

 

BRAND NEW 07 SLT SPORT 5.9, made in 9/06 so its been sitting around for awhile.

 

Kind of like mine. I got mine about 2 months ago and it has the 5.9 in it. That was my main reason for getting it was because it's not around anymore and I wanted what I'm used to!

Give it time to break in. In mine I couldn't feel it for a while but I finally started noticing lock up at like 4000 miles. Not that it wasn't before that, but I didn't notice it. This is my first diesel auto so I'm not used to putting it in D and driving off!! Also let your computer learn the truck. I remember when a friend had to have a new ecm put in his and it shifted like crud for a while and it was a rebuilt DTT tranny. So long story short, give it time and miles and it'll come around. One other thing put it in tow/haul and see if you notice it then. I bet you will!!

 

What is this "locked up" that you guy are talking about suppose to do??

I have an 07' 3500 mega automatic with PMT. I notice the TC locked up display on my screen every now and then when I'm pushing it hard down the hiway.

 

The TC locks and it's putting the full power of the engine to the ground, if that's what your asking.

 

nothing with a 5.9 has a 68re or an aisin in it.

 

if im not mistaken, you can get the 48re in 07 in the 2500 and 3500. at least thats what techconnect has showing in the service info. havent had to deal with any at the shop yet thats that new.