[dsraven]

it does look a lot like the connector that goes into the cab area and connects to the cluster, accel pedal body control module, air bag module and the other fuse/relay panel behind the drivers seat. can't think of any other single connector that has that many pins. was it located right next to the underhood fuse/relay panel? on my 04 envoy the plug has a lever that pulls the 2 halves of the connection together and locks them in place. I don't think the other plug near there has as many pins, for the bumper air bag sensors and lights, horn etc. check colors and compare with wiring diagram