ABS light on instrument panel

[RobbyMartin]

Originally Posted by JackandJanet

Yes - Something IS wrong. The base (stock) tune in your PCM does not "see" your truck properly. Unless Bill wrote a new "stock" tune for you, I cannot see how his "tune" files would have anything to do with this.

How did you get your truck to run in the first place after the engine swap before Bill entered the picture? I may be wrong,. but I'd guess that someone "flashed" a stock tune into that PCM that made it work with the new engine. Then, Bill wrote custom tunes for that flash (hex code).

My "educated" guess is, the stock flash DID NOT include your ABS brakes. So, I'd bet you need a new stock flash. Once you get this, I suspect Bill will have to rewrite your tunes - similar to getting a dealer reflash.

If what I'm saying is plausible, go back to whoever did your stock flash and make him reflash it with the CORRECT stock tune. Make sure you set your truck back to stock first though!

- Jack

Jack,
Bill, in fact, wrote the stock 5.4 tune on the orignal 4.6 ECM after the engine swap. I had to give him the #'s from the original ECM so he could figure out the what the 5.4 hex code was going to be. So, if the stock tune did not include the ABS then it needs to be done again. Can you forward this to Bill so he can review his original tune to see if it was correct?