I took this off the L26 upper can anyone tell me what it is, so I can sell it. It was located to the right and down of the TB

is there a part # on it that would make it much easier

numbers on the side as follows

12573220
MX136200-2530
12V 03E04

it is the vapor canister purge valve!!!! per GM

Part number 12573220 was superseded by part number 12581282

12581282 $39.37 $20.48
Emission system - Vapor canister - Purge solenoid
Purge solenoid, grand prix 2006 - 2007

Yup..purge solenoid.

So that mean my intake is from a 2006 or 2007

could I run a vacuum line to that and replace my old one?

If your throttle body doesn't interfere with it, you could hook your line from the tank directly to it. Usually the difference from drive by wire to swinging throttle linkage prevents it. But give it a look see.

neat the plug is the same I plugged it in. if that works that helps a step and I don't have to make a new vacuum port.