rough running. ..making noise

Asked by Jan 08, 2016 at 04:52 PM about the 2008 Chevrolet Silverado 1500 LS Extended Cab LB 4WD

Question type: Maintenance & Repair

I got problem with my truck...it's running rough....a have
replaced all ignition coils. ..and 3 injectors....but still have a
problem. ...I got a code P0055...and random multiple
cylinders misfire detected

4 Answers

50,285

Looks like bank 1, 02 sensor #3 is what is giving you the grief.

I open the valve cover....one intake valve spring was broke....hope fully that's it

50,285

Well thats a start, wonder why it was broke. Has anyone adjusted rocker-arms lately? High RPM or not adjusted correctly would be a cause. You gonna fix it? If so once done, get the codes cleared, if engine light comes back on, then get the code read.

No...I just got 94000 miles on it...I don't know why it's broke.....I gonna done monday.i actually a mechanic but for semi trucks..not for this ones...but I can fix it...because it's my truck...then see what's going on. ..thanx for reply rowefast...I appreciate for that.....

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