Anyone know where these plugs go?

[ELCAM]

The module bolted to the bracket is electronic spark control. I think missing from the bracket is a barometric pressure sensor, might be what the blue connector goes to.

 

[jcelk]

i think the blue connector is for the map sensor which is mounted to the pass inner fender

 

[78Delta88]

The blue is TPS, note the slots cut at 12 o'clock position on both outside connectors. Not unless GM did some strange things, the MAP is a three prong weather pack connector, but slots cut/cast into it will be at 90 degrees and there will be one on the center connector, IIRC will be at the 12 o'clock position. Line up on the TPS connector is totally different.