There has been a long discussion in the LLY section on this board about when the 05 Trucks came with 605# torque and the reflash that can set them to 605.
My truck has a build date of October can anyone on here run my Vin# and tell me if it has the most updated flash??

Thanks
CR Gittere

Vin # 1GCJK33215F848079

Only real way to do it is to check with a Tech 2. There is no other way to tell for sure. The calibration came out 9/10/04, but I have seen trucks with later build dates that do not have the current program...