I have looked all over HP Tuners tune repository can not find a 4L80E operating system T42 OS 24239036 with ecm E38 OS 12614088. Looked in all 07, 08 & 09 Silverado's, Sieras, Suburban's, Vans and even Escalade hoping to find a OS match with 4L80E. I am at a loss, can anyone help. It is for a 07 Silverado swapped in a 6.2L with 4L80E.