i have 58900 on my JL 2.0 can anyone tell me where the spark plugs are located and if it possible for me to change them myslef
They used to put that info under the hood. I just checked, it's not there. Checked the owner's manual, not there. Couldn't find shit around the web. I would call your local dealer's parts department. They should know. Also, many manufacturers nowadays will sell the plugs pre-gapped if you buy at the dealership. Don't assume that and always ask, but some do.