I own a Chevrolet Blazer 1997 LT 4WD

I was searching for a random trouble on my truck making it stall...when i unplugged a random connector underhood it solved the problem.

1- Fuel gauge needle begun to swing back and forth then jammed past the FULL and keep stuck there.

2- Received a P0107 code Low voltage at map sensor with 2 volts.

3- After disconnecting this random connector the MAP and EGR sensors went back to a 5 volts and the truck started fine, engine run better and fuel needle gauge went back to EMPTY without moving. I suppose its not connected anymore.

Green + Black + Grey + White + Pink
5 wires of that connectors sticked to the driver fender between brake booster and the fender itself.

I removed it from the firewall and unplugged it so can you tell me what is the exact usage and what it feed.