I just replaced the valve cover and intake gaskets, along with plugs.
Now it won't start, I know what your thinking, I forgot to plug something in.
I check everything.
It will try to start, sound horrible, then stall.
I have misfire codes on all cylinders.
What did I miss?

 

And now the driver door won't close!
What the hell did I do?

 

Got it figured out.
The upper intake manifold was hung up on something and not seated completely.
Rookie mistake. And the door started working. Don't ask me?