GM Calibration information

[walkerkd]

hey guys i done that with my vin number and there are 3 pages of stuff to be done.. i guess i need to take it in... has anyone else done theres and come back with alot of stuff>???..

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calibration_info

[2k1 2500hd]

I had the TSB's for my 6.0l 2500HD done. It caused my engine performance to drop way down, and my MPG to go to h*ll. I'm sorry I ever had it done, there is also no way to get back to the original settings according to my dealer.

 

Bruce :angry:

[akdiesel]

walkerkd,

What are you tring to callibrate?  

I took my truck in to see if I could get my speedo done and the closest they could get to my tire size was 265's but this would only effect the abs and not the speedo.  They did not have anything for the tranny.

[walkerkd]

i see all types of stuff on this i guess they add all the updates to the truck.. i had some on there for surging idle.. mines does that in the morning. kinda cycles or something.. cleans up after it get warm but like i said it was on there when i added my vin number. there a new engine calibration, fuel system, and a few others.. i was just wondering if it will be worth it.. put your vin number in there and see what it comes back with.