I need to know what plugs on to the connector in the pic (whats missing)

 

Is your car running funny or something? I would that looks like a MAF plug, but don't know without getting to look at everything.

 

No the cars not running funny and the mass air flow is connected! ANybody help

 

EGR or MAP sensor?

 

can you zoom out a little?

 

well we know its not the map sensor because that is located on the backside of the intake. I checked and the egr tube has been blocked off, but my question is this plug in my hand the egr plug?

 

Check wiring diagrams maybe? The only thing i could tell you is take it to a used car lot or find someone with an LS1 and park yours next to it and look at their plug, not alot of people will let you but its worth a shot.

 

I'm quite sure that's what my EGR plug looks like. Haven't been under the hood in a while though...