In a message dated 97-04-08 21:00:45 EDT, you write: > The data link connector on my 93 Geo Tracker has the same pinout as the > ALDL connector illustrated on the web site discussed below. Anyone know if > it is an ALDL interface? (wouldn't surpirse me, the transmission is a GM > 180C) Yes it is... not everyone knows that Geo is made by General motors :)