Here it is all you do is take off the 2 little hex screws in the back of the PCM and pull the old one out
Be sure to disconect the Negitive side of bat, and pull the PCM fuse Before all this
!
Here are the 2 side by side can you tell witch is the LT4?
Did you think that I could put that nasty PCM back in with out a little polish?
You all should know better!!!All in all it was a verry easy fix for $30! I will let you all know if I think it helped any as soon as I get here out and try it( It may be Spring )
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BBK 52mm TB, power pulleys, GMFS, TB coolant bypass, Hotchkis STB,Zaino,Pro 5.0 shifter, SLP ATM,"Deconed"SLP 2ontheleft,LT4 KM, To much to list in the stereo system! 
My Pics at photopoint!>
http://albums.photopoint.com/j/AlbumIndex?u=684399&a=4984835
[This message has been edited by Bill 97 SS#1422 (edited 29 November 2000).]