There should be a diagram under the hood or in your manual that will show you the path that the belt should follow.
The 2004 2.0 liter Pontiac Grand Am does not have a timing belt, but instead has a timing chain which requires no maintenance.
The ( 3.4 liter V6 ) in a 2004 Pontiac Grand Am has a timing CHAIN
what size engine
On a 2005 Pontiac Grand Prix : Both the 3.8 liter V6 engine and the 5.3 liter V8 engine use a timing CHAIN
The 3.8 liter V6 and the 5.3 liter V8 engines used in a 2007 Pontiac Grand Prix both use a timing CHAIN
3/8 breaker bar or wrench into square hole in idler arm twist in direction that realeases tension on belt and remove.
timing CHAIN
The 2.4 liter four cylinder engine in a 2000 Pontiac Grand Am has a timing CHAIN
It must have a TIMING CHAIN because Gates ( they make timing belts etc. ) doesn't list a timing belt for the 3.3 liter V6 engine in a 1993 Pontiac Grand Am
The 3.1 liter V6 engine in a 2002 Pontiac Grand Prix has a timing CHAIN
It has a timing chain.
there is a bolt in the center that is a 15mm that you will have two take out two change the belt tensioner and there is a pin that has two line back up on the block when you change it so that it seats right for the right tension .