Well… no not yet, I’m finishing hooking everything up today and I’m waiting on a replacement wiring harness from summit for the transmission because the guy who pulled it out messed up the main plug. What will I need to do?
The 1995+ units had two threaded bolt hole locations to mount the manual lever position sensor. The 1993-994 units do not have these bolt holes...
Here's a pic of a 1994 unit in my cores yard - note the lack of bolt hole locations on either side of the selector shaft. the 1995/96 units all have those on the exterior of the case.
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Here's a 2000 model year unit - note the bolt hole locations for the MLPS and longer selector shaft..
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I called around, Gm, transmission shops, even summit and they said that it should all be the same although I’m waiting on this harness. Summit said worse comes to worse I will need to get a trans controller I’m pretty much stuck as of right now
Who told you those two years of 4L60E were the same?
Are you sure they weren't referring to just the wiring harness?
I have a feeling they were, if you were discussing the harness itself and transmission with whomever you spoke to during those conversations but feel free to correct me if I'm wrong about that....the Rostra or updated GM 4L60E wiring harnesses made for 1993-2002 model year units will service all those years, hence they are the same...The
wiring harnesses, not the entire transmission...Certainly not the transmission case when comparing 1993-1994 to 1998-2000 units that otherwise went behind Gen1 small block chevy engines.
1993-1994 were pre-PWM; 1995 was the first year of PWM for all 4L60Es...GM made more changes starting in 1996 and the changes were extensive enough that made 1995 a stand-alone year for the 4L60E...Meaning you couldn't install that transmission into any other year without significant adaptation. The kind of adaptation you would never do because it requires taking the case half apart and swapping a different pump, valve body, spacer plate in addition to a new harness and you would only do it to adapt a 1995 unit to work with a 93-94 vehicle or 96-97 vehicle. You would simply rebuild your original transmission at that point.
You couldn't adapt a 1993-1994 unit to work with a 1995+ vehicle because you'd have no way to properly mount that MLPS unless you somehow fabricated a bracket of some sort and found a means to attach it to the case so that it was stable.
Let me know if you have any quesitons.