Help with cruise not working in 1st 2nd or 4th what gears does cruise work on t56 ?

[04colyZQ8]

Im having troubles creating a custom os for a 2009 Colorado 5.3l to run a t56, I have access to a lot more tables then most poeple have in the tune Anyway I have removed the t42, and I have reverse lockout working speedo works good, clutch switch working properly, no dtcs. After changing the gear ratios in the tune to match my mn12 05 gto t-56 I got cruise working above 25mph in 3rd, 5th and 6th. I'm using a gen Iv e67 PCM

Cruise will not work in 1st, 2nd, or 4th??

What speed and what gears work with cruise on a factory 06-07 ctsv, 08-09 g8, as they have the exact same gear ratios as me! Also interested in gen Iv 06 and up vette or ls3 camaro factory cruise with tr6060. Please post up how your stock car works. As someone told me it's normal up not have cruise work in 1,2,4?? I can see not working in 1,2, maybe 3rd, I'd expect 4,5,6 to work though?

Any ideas why mine doesn't work even after correcting the gear ratios?

[04colyZQ8]

No body owns a CTS-v or vette or GTO?? I cant find out what gears cruise works in on a factory application?