Since you seem to know everything about a 97,what makes them worse then 98/03 ??
Ive owned my 97 GTP since new and can tell you that the problem's ive had with mine also happen's to the 98/03.
I have yet to have
ANY tranny related problem's with my 4T65E-HD.Since new,all ive done is replaced filter and tranny fluid once a year !
Do some research on the tranny's built in 97 GTP's before you start talking out your a**.They were built better then 98 up's,stronger,less prone to break.Reasearch young man,check the facts first, before you come on here,like you know everything about 97 up GP's.For one,97's 4T65E-HD transmission input shaft is stronger from a better O-ring groove radius.
I bet you work at one of those speedy lube places

and sell people crap,that they dont even need done on there car's
Sorry to all the other GP fourm member's,if you take my rant wrong.I just had to get in me

on this one