The only other possibility is if you pull the VIN sheets for 2008, you see Saturn has 2 VIN Codes:
1G8, W08
http://service.gm.com/dealerworld/vincards/pdf/vincard08%2006-01-09%20r1.1.pdfOh wait...I just saw a post from a G2X owner on the HPTuners forum. There is definitely something unique to the VIN:
"Somebody help me~
I'm korean. MY english is not good..
My car is G2X, from GM-daewoo.
Do you know G2X? It's one of kappa flatforms, same with GXP, saturn sky redline and opelGT.
I bought a turbokit from U.S. because there is no shop tuning G2X in korea.
I finished installing turbokit, but have a problem in tuning ECM.
The VIN/OS pair error occured!!
I can read ECM and make a hpt file. But I can't get license.
The VCMsuite can't recognize the VIN of G2X.
VIN numbering of G2X is different from saturn, pontiac, or opelGT.
I mailed to support and ask help. He is finding a way but it seems difficult..
As I think, there are 2 ways to go.
First, the developer update the VCM suite to recognize korean version, G2X.
Second, Changing the VIN.
I went to daewoo-dealershop and ask to change VIN temporarily, until finish the tune. But they said no.
I wonder how I change my VIN.
And what should I do?"