No need to remove the timing cover !
If you remove the tensioner and the end of the plunger is flat, Then you have belt . If when removed it has a slight dome it's a chain. If your unlucky enough to have a belt, get it changed asap ! My daughters Galaxy distroyed it's self recently. I've since rebuilt a second engine but with the a timing chain conversion. Do a search on YouTube theirs a guy on there tells you what what. The adapted boss you need is actully a Ford part ! The boss and aftermarket chain is about 300 quid plus fitting .

Hope this helps

Adder