Duramax FICM Diag and Repair Duramax Ficm
LLY running rough and dies. it is a Ficm failure The FICM is basically just a bank of high output transistors that are the electronic "drivers" for the injectors. From what I know, the FICM is This is on my 05 GMC Sierra 2500hd 6.6 duramax. Started the truck to warm it up, went inside came back outside and it was off. ...