The Problem: Finding a Reliable LLY Duramax FICM For the last year, the engineers at Circuit Board Medics have been hard at work trying to solve a problem that has plagued LLY Duramax owners for years … read more

If you have a Chevrolet or GMC vehicle with a Duramax LLY or LB7 engine that wont crank or start, or you've got a U0105 DTC error code, the culprit could very well be a faulty Fuel Injection Control … read more