Since some weeks ago, I have some noises in the engine like piston slap, or lifters, but other noise is when started I hear the air pump and a "gnash" or something acording to the air is on, when stops, it stops the noise too., OK, so viewing the air hoses which goes to the manifuld and the other side to the air pump below the fuse box I see that the other hose of the pump, wasnt conected to any part besides that a little hose wasnt conected too,

So the question is: What happen if I decide to cancel the air pump just disconected it?, what happens If I cover the end of the hose tha appears to be the Intake?, May this problem be the reason of the piston Slap?, Is this the only condition to the engine to take air inside of it?

Rally I need to chat with somebody who can help me.

Thanks a lot

 

I don't see how this would cause piston slap. The A.I.R. pump pumps cool fresh air into the exhaust to help heat the cat and O2's quicker when the engine is cold. After a short time, it shuts off. The piston slap is an inherent problem in the LS1's from what I have heard.
To remove the A.I.R. system, you would need block off plates for the manifolds. Just remove the tubes coming out of the manifolds and put the block off plates over the holes. Remove all the pipeing and the t thing on the drivers side that the lines from the manifolds go into. Remove the hose going down the drivers fender. And under the drivers side headlight on the underside is a panel you can remove the 2 bolts, drop it down and under there is the air pump. Remove the connector and the 4 bolts and pull the whole air pump. On the intake there is the vacumn solenoid. I left this in, it stopped my car throwing a code, but blocked the vacumn line coming from the manifold. With all the rest out, you have just removed the A.I.R. system. If you ATAP, you will see in incomplete secondary A.I.R. fault, but it doesn't throw an SES light (as long as you leave the solenoid connected).
Hopefully this helps.