Where is it located? What size is the bolt?
 
remove the trunk carpet, remove spare tire.  theres a 4mm bolt there, thats the oil filter
fill out your reg or atleast tell us what motor it is and maybe we can help
 
 
It's an 04 Sunfire, 2.2L.
 
Chris C wrote:It's an 04 Sunfire, 2.2L.
Near the intake manifold. Right side, 1 1/4 socket I believe. 
- 2004 Cavalier - 124k, owned since new