What number exactly is my PCM? pic inside.

[PioneerODR]

Not too sure.........

96 f250 A/T

[madpogue]

That end doesn't tell you much. Remove the three nuts holding the parking brake handle bracket in the cab, and pull the bracket away from the side wall. You'll see a label with a four-character code on that end of the PCM (HDE3 or ATS2, or some such).