trans swap 1996 4l60e out of a 4x4 surburban put into a 1994 chevy z71 question?

ok i took the trans out of my 1994 z71 4l60e 4x4 m30 style (solid piece case transmission because the transmission housing was cracked at the adapter and leaking trans fluid alot)...... for a 1996 4x4 suburban 4l60e m30 style (solid piece case transmission).....
i put the torque converter out of the 1994 4l60e into the 1996 4l60e transmission
everything bolted up exact.....
the wiring harness in the 1996 4l60e transmission wiring has a extra connector end on the wiring harness ..so i swapped the electrical harness out of the 1994 transmission to the 1996 trans...and removed the extra solenoid from the 1996 trans...everything looked good and fit with no probs .. im having issues with the 1996 4l60e trans shifting properly........

so im thinking i need to swap the complete valve body form the 1994 trans to the 1996 trans to solve the shifting issue.....i(t goes into reverse and all foward gears except overdrive right now.)

is the casting on the transmissions the same at the valve body location of the transmissions?

will the valve body from the 1994 4l60e fit on the 1996 4l60e trans?

i want to swap the valve body from the 1994 trans to the 1996 trans

I have done alot of 99 and up 4l60e rebuilds, normally I get a transgo separator plate with instructions, I can remember them saying 94, 95, and 96 up are all different, I cannot remember for sure what it is , but it had to do with pwm, and maybe a 2-3 shift solenoid. If you can look up instructions for a transgo separator plate it will tell you the difference, or pm Vince @ FLT or one of their reps, they most likely have all those things memorized

Vince isn't with FLT anymore but he will help you with transmission questions if you PM him.

thanx for the replies.... i went ahead and ordered a core that is a exact match for the trans that has the leak 1994 4l60e m30 case.....gonna rebuild it ....i do need some info for when i build it..i pull a boat alot that weighs around 3000 pounds and i need to beef up the trans enough to handle that ..and not get into the gas mileage part to bad... any info on the upgrades are appreciated.....again thanx for the replies....peace.......hope i can do this right and not ....mess it up....lmao :LOL:

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Originally Posted by RedHeartbeat

Vince isn't with FLT anymore but he will help you with transmission questions if you PM him.

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Yes we have already talked! LOL I actually posted in his thread on PTN and he did send me a pm. I'm always around you just got to find me! Have a good one. Vince