2003 Cadillac CTS misfiring still

2003 CADILLAC CTS
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CHINO101
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Engine Performance problem
2003 Cadillac CTS 6 cyl Two Wheel Drive Automatic

I have 2003 cadillac cts 3.2L had a misfire bank 1,3,5 replaced spark plugs and coil packs and two catalytic converter but still have same problem can some one help
Feb 9, 2010 at 7:52 AM
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STRAILER
  • ✓Experienced Mechanic
  • 55,561 POSTS
Hello Chino101,

This sounds like a problem of the coil pack and module which they had many problem with for this car. Please check and replace them and get back to us so it will help others,

Best, Ken
Dec 4, 2016 at 10:53 AM
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