This write up I give 100% Credit to Rianna. I could not move the whole thread here, so I am posting the links she so graciously provided.

The repair instructions for the HUD on an 04+ can be found here

How do you remove the Heads up display unit? - JustAnswer

And one with step by step pictures can be found here

HUD - Heads Up Display for Pontiac Grand Prix 2004 Repair Instructions

Thanks again Rianna!