[gmrulz4u]

I was recently doing some regular checks on my 89 Cutlass. It has the same 2.8L engine as the Cavy. When I was checking the vacuum to the transmission modulator, I could see a white colored plug under the intake air box. It was a 3 socket female plug. There was nothing plugged into it, and so I was wondering if anyone knows what exactly it's there for?

I'm not 100% sure if it's found on ALL 2.8/3.1 engines, but I would assume so.

Anyone?

THANKS!