ISX15 ECM

[tree98]

Most of us here generally stay out of shops because most are hacks and end up blaming you for the things they screw up.

Get yourself a laptop with insite and start buying basic hand tools.

Open a free account on quickserve so you can access parts and service information specific to your engine.

Learn to fix it yourself so you aren't at the mercy of these crooks and by the way dealers are some of the worst.

If you need something real major done, take it to haggai diesel in griffin Georgia. They are the only trustworthy and knowledgeable shop I know of in the entire country.

The things your saying that the shop is telling you sound like a guy that doesn't have a clue what he's doing, if I were you I would be real leary about what he's doing and what it's gonna cost you.