upgrade from 2000 o.s to 2002.os

[smslyguy]

how do you upgrade from a stock 2000 gmc to a 2001 or 2002 o.s? This is a stock truck i was just wanting to get more tuning options from the 2002 o.s, but don't know how or where to find them.

[mr.prick]

Holden Crazy (http://holdencrazy.com/EFILive/)

[tokymon]

go to holden crazy and download a stock program from a 2002 that is the same as you'res (ei. 02 gmc 5.3l/4l60/4x4) and flash the os in as full flash not just the calibration.