It isn't too difficult from what I have read. I have never done it, but I do plan on doing my K-1 fairly soon. I have 2-3 and 3-4 flaring, but only when it's really cold out, and it goes away when the everything has warmed up. You do have to remove the ATF pan to get to both the B2 and K-1. I would replace both since you are in there. And you might as well drain the torque converter and put in new AT fluid and filter.

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