rrwebster

Everything works fine except it won't shift.

Injuneer

Please clarify or confirm:

- you are using a 1997 4L60E

- you are using a 1994 Caprice wiring harness

- it is in a 1995 F-Body chassis

- what year PCM are you using?

- does it shift manually?

There are significant differences between the 1994, 1995, and 1996/1997 4L60E transmissions, with regard the the converter lock-up wiring, types and internals. Perhaps this is contributing to your problem.

Just a guess.

4L60E year differences and interchanges.

rrwebster

- I AM using a 1997 4L60E

- I AM using a 1994 Caprice wiring harness Exact description from Seller (1994 Chevy Caprice 9C1 Impala SS LT1 5.7 4L60E ECM Engine Wiring Harness)

- It is in a 1990 Chevy C3500 Dually

- I do my own programming with C.A.T.S. Pretty sure it's flashed at a 1995.

- does it shift manually? ----- if it does, I don't know how to make it do it.

I am aware of the differences in the years and that if you have a 95 you need a 95 trans. I never thought it would actually "not shift"

Injuneer

Did you read the part about the 1996/97 changes making the valve body, 3-2 solenoid and separator plate incompatible with the 1995 trans. Add in that trying to use a 95 PCM puts it in limp mode. I'm no an auto trans person, but seems that might have something to do with it. Admittedly just guessing. I think I've explained in the past there doesn’t seem to be many (if any) people left on this site that want to answer trans questions.

By “shift manually” I mean using the manual selector lever. Your 7 word post didn’t provide a lot of info to work with.

rrwebster

I guess I missed that part about the 97 transmission being incompatible I tried flashing it as a 94 Caprice police cruiser didn't change anything I guess I didn't expect it to.
I did find a video

https://youtu.be/__8nVV6lR7Q

Injuneer

I gave you a link to another site in response your other post. Probably a better chance of getting help there, since there are more people doing unusual swaps.

rrwebster

Thank you!!!

rrwebster

Can't find that link on the other post.... is that here?? or on LS1 board?

Injuneer

Your other post from yesterday in the “.bin files” thread.

https://www.camaroz28.com/forums/com...-files-460017/