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rough idle

  1. Truck idle problem

    Chevy Silverado Forum (GMC Sierra)
    I got an 2006 GMC Sierra 2500 with the 6.0 vortec. I had to get the engine block replaced because of some gouging in the cylinder walls. I had everything that was good from the old motor put on the new and it ran fine for a while. After like 2 weeks of driving it the rpms move up and down and...
  2. 1998 k1500 5.7 rough idle when warm

    Member Garages
    My truck is a 1998 Chevy k1500 5.7 and it is idling rough when it’s warm not noticing any misfires and no engine codes other than my catalytic converters code but I have a cat delete. Anyone know what the problem could be?
  3. 08 Chevy Silverado hard starting rough idle

    General Chevy & GM Tech Questions
    Hello, I have a 2008 Silverado that intermittently has starting issues. It cranks for a while and spits and sputters then usually dies, if not it runs rough with surging idle. I recently installed a brake controller and noticed it signals overload or short every once and awhile but I can’t...