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rough idle

  1. Chevy Silverado Forum (GMC Sierra)
    New to the forum and at a loss. Starting with a 2000 Silverado 5.3 275k never had an issue till about 2 months ago..started witha couple hard starts..then subsequent engine light indicator. Put an obd on it and got a p0300 random misfire. Changed plugs and wires since they were probably due...
  2. 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...
  3. 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?
  4. 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...
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