I have just installed a 3.8L engine from a '98 Firebird into our 2000 Firebird, as the original engine had a cracked block. There is a connector on top of the transmission, lying precisely where the transmission bolts to the engine, colored by a blue band (can be seen in photo), for which I cannot find the receptacle. Any suggestions?

 

You should try posting on a 4th gen forum.