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1-4 of 4 Results
  1. 04.5-05 LLY Performance Parts Discussion
    Dose anyone have a lly ficm can’t find one anywhere
  2. General Discussion
    Hello All, I have been diligently trying to find the right sized FICM mounting bolts for my 04 duramax 6.6 LLY and am having a heck of a time locating the size to order new ones. I'm reaching out hoping that someone here has a parts diagram that can tell me. I have the 3 bushings but the...
  3. 04.5-05 LLY Duramax Powertrain
    I've got a good one so the silverado 05 2500hd duromax won't run with the ficm bolts connected to bracket however when I remove the bolts it runs but it's in limp home mode where it won't go over 40 or 50 miles an hour and cuts out under acceleration. When I push on the ficm unit while the truck...
  4. 04.5-05 LLY Duramax Powertrain
    Okay I got a good one ,when my ficm module is bolted down in the bracket truck will not run. When I unbolted the three bolts and remove them it runs but it will only go 40-50 miles an hour and it cuts out under acceleration and load,Also when I press on the ficm with engine running it dies...
1-4 of 4 Results