On the P10 you couldn't do that because there is a 2nd CPU in that PCM that does ETC control, we don't program that on the P10 so you would end up with a mismatch.
Requested P12 file is below.
Thank you Ross , owe you one !
Gil
2005 1500 HD , Custom OS3 SD tune .
2006 Trailblazer Dinosaurs and Plants gave their lives so that we may drive , long live fossil fuel .