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.
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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.
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.