98 ws6
98's don't have sail panel bubbling issues. 99-02 do.
98's do have a issue with the pcm bricking when tuned but I'm still using my 98 pcm and have had MANY tunes.
The later years are a bit easier to tune and are faster pcms but any tuner that can't tune any H/C/I setup using a 98 pcm I would not bring them a 99-02 either.
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Here's some links to comprehensive info involving the differences between model years and such. All the various years have some positives and negatives over other years. Much of it is subjective, so it's false to assume that any given year is better or worse for every individual:
https://ls1tech.com/forums/chevrolet...s-pleases.html (starting around post #8)
https://ls1tech.com/forums/new-ls1-o...need-know.html
https://ls1tech.com/forums/new-ls1-o...-f-bodies.html
Here's some links to comprehensive info involving the differences between model years and such. All the various years have some positives and negatives over other years. Much of it is subjective, so it's false to assume that any given year is better or worse for every individual:
https://ls1tech.com/forums/chevrolet...s-pleases.html (starting around post #8)
https://ls1tech.com/forums/new-ls1-o...need-know.html
https://ls1tech.com/forums/new-ls1-o...-f-bodies.html
Does your 2001 have a low coolant level sensor? This was gone for 2002, but I don't recall if the '01s still had it or not. I believe the rear pinion seal was also updated mid year for the 2002s. There were some other minor optional equipment changes/standardizations for certain models I think, otherwise the biggest difference between '01 and '02 was just the availability of the LE and CETA packages.










