i have a code of po308 on a 2004 cadillac srx i replace plugs and coil pack

Comfort

New member
but still have code and misfire.\? this car is what i call skipping. i took to dealership and they ran scan tool on it and got the code. i also have the scan tool. they said it was the coil pack and plugs. replaced but car still does same thing and has same code
 
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