Check out wjieeps.com. They have tons of info on grand cherokees and it was my go to page when I had my 2002. Good luck.
...he looks you crooked in the eye and he asks you if ya paid your dues, you just stare that big sucker right back in the eye, and you remember what ol' Jack Burton always says at a time like that: "Have ya paid your dues, Jack?" "Yessir, the check is in the mail."