I have a 2007 PSD that will be going in for a TSB on March 19th. The truck is running just fine as it is right now, and I do not hear any buzzing from the engine on shut down. My question is, when I take it in, are they going to flash it? And if so, what is it gonna do? Are they required to flash it, or can I request they don't? Basically I love the way my truck runs and performs now, and don't want a flash to cause any MPG or Power losses, so I just wanna know what I can expect when I take it in. Thanks for the input!

 

You shouldn't have any difficulty with the flash, because an 07 should already have the "troublemaking" flashes done. But if you are happy with it, tell them to leave it alone.