2004 Chevy Cavalier Timing Belt. Chevy cavalier 2004, center single roller timing chain by cloyes®. I just had a new fuel pump put on my 2004 chevy cavalier and it still won't start.

Do i have to remove the engine to replace the timing belt. One mechanic said i needed a new timing belt and another said new modules which one is right? Gates is the largest global manufacturer of oe timing belts.