I have a 3500 SRW 6.7L auto. It was manufactured 3/07. I took it a while back and they flashed it with 18-033-07 Rev A. I know there have been more flashes that have come out since then. Can anyone tell me what flash or flashes I would need to have done to bring it up to date. Thanks

 

I will try to help... the REV 18-033-07 is the TSB and you need the UA flash if you choose to get it.

When I did the above memtioned REV. 18-033-07 TSB REV A. They did the UT flash back in June and I had the UA flash last month... Hope this gets you started in the right direction....

 

Thanks for the reply. What is the Bootloader that I keep hearing about?

 

Ummm...actually that's the AT and AU flash versions.

Check this link for more info on the flash. The bootloader is like the BIOS on your computer for your truck's PCM.