Originally Posted by scottydl
The letters indicate option packages:
SE = Standard Edition
SLE = Super Luxury Edition (a hyped-up SE all around, an SSE(i) look-alike in '98-'03)
SSE = Super Sport Edition, has just about every option standard. Discontinued in '00, SLE took over the same features.
SSEi = same as SSE, but the 3.8L V-6 is supercharged!
. Not sure why they used the letter "i" for that.
GXP = replaced the SSEi in '04, with a Northstar V-8 instead of supercharged V-6. The letters just sound cool.
Well scottydl.... the gods honest truth is that they don't mean anything.
But what you posted is the most believed answer.
I'll try and clear up your SSEi and GXP definations...
The "i" on SSEi would stand for "induction or inducted", using your definations.
The GXP would be "Grand eXperimental Pontiac".
But again, these are just what people think/believe.....
The trim level letters really do mean nothing.