ok i have a 2000 deville that keeps throwing up p0300 i replaced both the coil pcaks but it still throws the same p0300 code one minute it will run fine but then it just starts skipping what else could cause this code?

 

connectors from coil to spark plug being carbon tracked, injectors, contaminated fuel, ground, ecm. You have generic misfire code, dealer scanner (Tech2) may be able to isolate which cylinder is misfiring.