http://www.gmpartsdirect.com/results.cfm?singlepart=1&partnumber=Hypertech

http://www.gmpartsdirect.com/results.cfm?singlepart=1&partnumber=Hypertechread the fine print on the website:

"GMPartsDirect.com is independently owned and operated by Flow Chevrolet, LLC,
an authorized independent reseller of General Motors Parts. This site is not owned or operated by General Motors Corporation"

This is NOT GM!!!!

"The aftermarket parts or accessories in this section are not in any way affiliated with GM nor produced by GM or GmPartsDirect.com. This section is purely provided to offer you a different product currently not offered by GM. All aftermarket parts are warranted by the manufacturer of the part only. (GmPartsDirect.com) does not warrant any aftermarket parts or accessories."

GMPartsdirect often has VERY good prices if you know your PN you want. Watch out though, they gouge you on the handling fee. Only compare "shipped" prices, not their sale price.

Personally, I get better service and nearly the same price on OEM pn's from Scroggin Dickey(?) sdpc2000.com