I have a early 2004 8.1L/Allison (1000PK) the numbers on my TCM are PN 29537441 11/19/2003 S/N: BKDUTCM333230962 Brodcast Code 9833 230962 Service Number 15768288
I am sure that tells you anything, but I was wondering just what exactly I need to convert over to the 6 speed. I do a lot of driving and squeezing more MPG out of my truck would be very helpful.
Thanks
Ryan