07 GMC crew cab 4x4 tune?

[Primed67]

I just had some service work done on my truck so I had to put the factory tune back in the truck. well while it was in the recalibrated the computer for my larger tires. my ? is when I put the tune back in do I still need to adjust the tire size or will it automatically pick it up since it had already been adjusted on the factory set-up. thanks for your help!

[Solid]

I had the lager gm wheels. with lager tires. But the dealer flashed it with the gentech 2. Since then i just installed the tune. ANd did nothing to the wheel size with the predator. And with a protable gps my truck runs the correct speed.

So no need to adjust if i'm correct

[06MonteSS]

correct, like Solid said ^ ^ ^ ^....

you should be fine... just install the tune and don't change the tire settings yourself...

[Primed67]

Thanks for the help guys I really appreciate it. Next thing is to take some readings and do some fine tuning. Thanks again!