How to clean 2006 silverado 4.3L Throttle Body
 

I was gonna clean my throttle body today but it started getting dark. Anybody know how to get the plastic piece right on top of the throttle off? I got all the hosing to the air box off, but couldn't figure out that last piece.

Also, is it safe to clean a vertical throttle body? The one on my truck looked like it was straight up and down from what I could see of it.

Thanks for any help.

If your talking about the connection for the cruise control it pulls straight off. You can see how it is open on one side - push in the opposite direction of the opening. I have had some that were a bitch so I just unthreaded the 2 plastic pieces apart.
Personally I don't like getting all that crap in the motor so on the 4.3 I unbolt the throttle body and clean it off the motor. That also enables you to clean the back side much better.