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rough idle on 6.0l 2500hd

Discussion in 'Chevy Trucks' started by grosser397, Dec 6, 2008.

  1. grosser397

    grosser397 Senior Member
    Messages: 196

    hey guys i need your help. i have a 2004 2500hd with the 6.0 and it has been idling rough and sometimes dies. i replaced the intake manifold gaskets. This 6.0 was the later model that they switched the fuel pressure regulator from the rail in to the fuel model in the tank. and other solutions? mass air? o2 sensors?
  2. mikeauto1

    mikeauto1 Junior Member
    from nh
    Messages: 6

    rough idle

    hi i had the same problem with mine, gm has a bulletin out for these 6.0l with electronic throttle body no throttle cable for rough idle and sometime stall, clean the throttle body with a carb cleaner it gets gummer up betweenthe bory and the throttle plate, if that does not fix it there is a reprograming of the ecm with new software. but try cleaning you throttle first should take care of it.
  3. RichG53

    RichG53 PlowSite.com Addict
    Messages: 1,135

    Try a can of Sea Foam in the tank... ( Full Tank )......
  4. Mxrider069

    Mxrider069 Member
    Messages: 85

    is these a SES light?

    Possibly a crank sensor
  5. ChevKid03

    ChevKid03 Senior Member
    Messages: 505

    I had the same problem in my 03. Replaced the throttle body after trying to clean it. All problems went away. Did it do this before changing the intake gaskets?