bpretty21 Posted February 28, 2010 Report Share Posted February 28, 2010 2003 cts misfire on cylinders 1,3 and 5. replaced coil pack, plugs, igition coil, still no luck. what else can I have done? my car has been in the shop for over a month. please any info will help! Link to comment Share on other sites More sharing options...
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