Programmers

[BigDave]

Can the dealership see if you have used a power programmer even if you have changed the settings back. And if so could this potentially void your warranty.

[hcvone]

With the Preditor you can change your settings back to stock (if you want to) I had my truck at the dealer for some work, I did not change back to the stock program, the Tech had to change some computer settings which he did without any problems with the Preditor program still in the computer.

[gmcjoe]

I don't think they can tell.

 

Just return your truck to stock before you take it in in case they give you any grief.

Also, if you have the HPP3 programming (for example) and the dealer does a flash upgrade on your computer, you will have stock programming again and your hand held programmer will be useless