na, all chev s-10 auto overdrive transmissions are basicly the same. Just different bolt patterns on the bell housing, and possibly gearing, and splines.
The clutches basicly do the same thing as a clutch in a standard. They allow slippage in the gears when nessary, and lock right up when required.
They're what usually wears out when you tow to heavy of a load in overdrive.
Clutch packs in auto transmissions are internal, and you'll want to let the pros fix it. Sorry