OK, let's get something cleared up here.
Is this truck a -14 or is it a -16?
I look at 1 page of the forum and I see it as a -14.
I look at another page and it has -16 in the discussion title.
If this is a -14, it should be capable of performing the flash code provided the APPS is good and is properly learned up.
And then the dance must be done with perfect timing and counts.
It is sometimes hard to get the pedal dance to work, but patience and persistence is required.
I can't say the same for a -16 as I have not had to work with them.