hey all i have a 3L80HD/THM475 from an 87 c-10 pickup i just had,

i plan on using it in another vehicle and its already removed and im in the process of cleaning it up and getitng it ready and all that

i found a few TSB's on this tranny:
903577A OCT 90 Direct Clutch Premature Wear With 3L80 and 3L80-HD

903567A OCT 90 Slip or No Drive With 3L80 and 3L80-HD A/T

904027A FEB 91 Service Replacement Transmission Assembly (Srta) 3L80/3L80-HD

93C07A MAR 93 Recall - Automatic Transmission Vent 4L60, 4L60E & 3L80


can anyone who knows about this particular tranny tell me about it and what to watch for on it or modify/replace in it so it will be alright?

and also what the TSB's above mean ? premature direct clutch wear ? slip or no drive problem ?


thanks for anything, any links, anything,


i have tag info from it if may help any ?


Randy the easter wabbit !

-here to help fellow enthusiasts as best as possible grin

parting some vehicles, 54 ford truck 57, chevy 210, 69 fairlane coupe HT and others,