Bill:
Not having worked on a 3.4, I cannot direct you exactly to where it is; however, I do not believe that is the solenoid you are looking for.
Interestingly, both your 96 3.4 and my 95 3.8 use the identical solenoid
http://www.rockauto.com/en/moreinfo....261796&jsn=397
On the 3.8 it is mounted on a bracket on the engine, at the rear, close to the throttle body. Yours however will probably be mounted differently.
It is fed front a small diameter hard plastic line from the canister, via a quick disconnect around serpentine belt. From there it snakes around the back on my engine to the solenoid, which is mounted up top in plain sight. From there the output hose eventually goes to the throttle body.
It is controlled by the pcm; the 95 manual breaks it out as a green with white stripe wire, and a pink wire. I think yours will be the same
Good luck
Jeff