Re: 2008 Grand Cherokee 4.7L Gen II Spark Plugs
Also - If this is the first time you have changed them, the coil-on-plug boots may be stuck to the spark-plugs. Try gently twisting to remove rather than pulling straight up. I destroyed one boot this way and I couldn't get any spares. I now keep a spare coil-on-plug handy in case it happens again (Checker Auto Parts BWD- E1101 for under $30). I think the same dealer part (identical) is more than double that amount.