Ok, so I told all of you that I did the 1-2 D Shift on my automatic trans and I ended up getting a rebuilt trans (replaced 1-2 pistons). Couple days ago my check engine light came on again. It only came on after going 65+mph and there was a loss of power at those speeds.

In a totally unrelated (or is it?) matter, I replaced my air filter with a K & N filter. Love it!

But the dealer is telling me that there are no "trans codes" coming up when he ran diagnostics only an "oxgen code". Do any of you know what this could mean?