First place, 2-wheel drive and 4-wheel drive transmissions will NOT interchange they are different. There is only 2 years that will work in the 96 and that is a 96 and 97 4L60E 4-wheel drive transmission.
Late 1996 to 1998 year 4L60E Transmissions will work with no problems.
The only YEAR that will work in that truck is a 1996 MODEL 4L60E transmission. That was a bad year for things interchangeing. And you own it.
The 88 year transmission will not work in the 99 because of the computer in the 99. You need a 4L60E from the year 1993 to 1995 and then it goes to 1998 to 1999. 1996 and 1997 transmissions will not work. Now if your 99 is the NEW BODY DESIGN truck then you can use these year 4L60E transmissions. From LATE MONTH 1999 to 2006 will work.
That will be a 4L60E transmission.
NO it will not. Reason is that it the late month of 1999 chevy REDESIGNED all the engines and transmissions. Nothing under the year 1999 will fit anything over the year 1999. You MUST get a 1996 or 1997 4L60E. NO other 1 will work with out MODIFYING
That would be a 4L60E transmission.
The only 2 years that will FIT RIGHT is a 1996 and 1997. 2-wheel and 4-wheel drive transmissions will NOT interchange.
Remember this. 2 and 4 wheel drive transmissions are different and will not interchange. Now back to your question. The only transmission that will work in that year is a 1996 or 1997 4L60E because it is a 1/2 ton and the wireing harness and computer is set up for the 4L60E ONLY. The 3/4 tons used the 4L80E in them ONLY.
That year must have the 1996 4L60E transmission put back in it.
The ONLY 2 transmissions that can be used is a 1996 or 1997 4L60E tansmission if it is a 1/2 ton and the 4L80E transmission if it is a 3/4 ton
You can ONLY use a 1996 model transmission on a 1996 model. The 1/2 tons have the 4L60E trans and the 3/4 tons used the 4L80E in them.
If it is a 1/2 ton then it MUST have the 1996 or 1997 4L60E put back in it. If it is a 3/4 ton then it must have the 1996 or 1997 4L80E put in it.