2007 Avalanche.

[kangur1]

Hi. thanks again for admittance to the group.
where can I find tuner pro RT definition file for 2007 Chevy Avalanche with 5.3L
I'm looking to tune out displacement on demand.
Thank you for any help.

[dave w]

:welcome:

I changed the font color to black on your post.

dave w

[2xls1]

I don't think you are going to find anything around here for a CAN bus Gen 4 vehicle. You are going to have to use a commercial product like HP Tuners, EFI Live or Tunercat OBD2 Can bus version.