If you don't want all kinds of problems, Then YOU should put the 4L80E back in it and be done with it.
Auto is a 47RE Manual is a NV5600
You should really put a 700R4 back in it. That is really your only choice due to the computer system on that year truck.
If it is a 1/2 ton you MUST put the 4L60E in it. The 3/4 tons used the 4L80E in them.
No, you can't. transmissions bellhousing is different in 60° V6 and L4
how to change the serpentine belt on 2003 Chevy express 2500
That year MUST have the 4L60E put back in it because of the computer system that's in the truck.
Dexron VI
Chevy moved it from the frame rail and put it inside of the fuel tank in 2004
The 96 and 97 4L60E transmission are THE ONLY 2 YEARS THAT WILL FIT
The kind that you put in it
Whatever 1 is the easyest to get to.
22 if its not diesel and 24their if diesel