Quote Originally Posted by gmjoe2490 View Post
I'm new to HPT, My question is I have a 99 Silverado 1500 that had a 4.8l. I put in a 05 6.0l. I downloaded a stock 6.0l tune from HPT Repository but it wont let me write it to my truck. Says I need to license it. How can I put a stock 6.0l tune on it so I can tweak it from there? Thanks for any help to a newbe.
05 com is 1mb (03+) and the 99-02 512kb , totally different tunes .