- Joined
- June 17, 2004
- Messages
- 24,267
- Reaction score
- 4,737
- City, State
- Knoxville, TN
- Year, Model & Trim Level
- 98 Limited AWD 302
No pats is 98 up , the late 97 has p heads and external egr, and the transmission is the early 4r70w but used the later range sensor so it has a unique harness, and the pcm is also unique to this setup, this is the version I had to use in my 97 sport with a 99 motor , and I also have my brothers 97 xlt here that is a late 97 with this setup
How sure are you that the late 97 PCM is different than the early 97 GT40 version? I have two 97 PCM's with the same code to use for my projects, and the trans range sensor was the only thing I wondered about. My trans guy said the older range sensor would work with a newer 4R, which was good to hear, but it also suggested to me that the range sensors have the same circuit functions.
I'd prefer to use the later range sensor, so if there is a later 97 PCM that is "made for it", I'd prefer that one.