How do I remove the headlight assembly in a 2008 gmc sierra?

I'm not familiar with your vehicle, but it's likely similar to what's described in the link below:

https://www.askmehelpdesk.com/cars-trucks/faq-how-troubleshoot-repair-maintain-hondas-selected-other-vehicles-46563-11.html#post2092806

Thanks for your reply, but I am trying to remove the entire front light assembly on a 2008 GMC Sierra so I can replace it with Euro Lights.
Thanks

I understand now.