H&S Performance Software Unlock Code, Chevy/GMC (2011-13) 6.6L LML Duramax

This product will allow you to access GM LML 6.6L Duramax tuning on your H&S Black Maxx, Mini Maxx, or XRT Pro tuning device. Please supply your valid e-mail address at time of checkout. Once this software is purchased, please allow one business day to process the order. You will receive an e-mail containing a 5 digit pass code to be entered in your H&S Product. Once an H&S Product is unlocked for use on your LML Duramax, it should never need to be unlocked again.

This tuning update will allow you to access files that are not legal accept for use during racing events, off road, or outside of the United States and Canada.

Unlock codes are generated during regular business hours of Monday thru Friday 8:00 A.M. - 5:00 P.M MST. If you purchase an unlock code outside of these hours your unlock code will not be sent until the next business day.