Sorry for the delay and the confusion. That is a different style plug than what I was thinking about. You're in the wrong area though for the speedometer. The wheel speed sensors for the anti-lock brake system are different than for the speedometer. The transmission has an input speed sensor and an output speed sensor, both on the left side of the transmission. The sensor in the differential housing is for the rear wheels for the ABS.
The red locking wedge only needs to be pushed about 1/8" in the direction of the end with the step on it. That will let you press the release tab. Before you replace parts, did you have the ABS diagnostic fault codes read and recorded?
Monday, May 22nd, 2017 AT 7:39 PM