My weekend was supposed to be spent pulling my intake and sealing a leak im suspicious of after i purchased a data logger from 1320Electronics, and ALDLDroid and saw my idling map pressure was 26-27 kPa.......
in reality it was spent pulling my 700r4 that had less than 5k miles on it for a mysterious whine coming from it. allegedly rebuilt, and it WAS built with 600hp parts, but as it turned out, the builder thought it to be ok to reuse the front planetary housing with a .036" deep groove in, a ****** scoured up fluid pump housing, and a chattery pump rotor.
It sent brass shavings thru the transmission, so i had to break it down, clean it all internally, replace bushings, and several other things. I had good serviceable parts on the shelf, so the total cost was my beer, my time, bushings, a front TC seal, and some various 700r4/4l60e hard parts i had chilling on my shelf.
Read about it here:
https://www.gmsquarebody.com/threads/another-mysterious-30-year-old-truck-noise-thread-lol.32137/