The plug you refer to is to connect the auto trans to the rest of the car's internal witing for the neutral start switch, back-up lights, power, and kick-down switch. The large round part with several pins is used for diagnostic purposes. To remove connectors release any locking tabs and pull out. If the shift computer failed completly the car would not shift out of first gear. The shifting of the trans is controlled by two electric shift solenoids that are powered by the shift computer and is also contolled by the gear selector. If the trans is running good the best advice is to leave it alone. It is a good idea to check the condition and level of the trans fluid and final drive. You could also check the line pressure and other external adjustments. Set them as per the Workshop Manual. David Teitelbaum vin 10757 --- In dmcnews@xxxx, "adam_one_million" <acprice1@xxxx> wrote: > What is the small cylindrical plug type unit that hooks to the top of > the harness that hangs in the engine compartment? It is a small black > cylinder with 5 male connectors. The harness that it plugs into has 6 > connectors... Is this just to hook up the various circuits for the > computer, or is this thing some sort of resistor or something?? > > How are the different connectors that plug into the transmisson > removed? Do you simply pull them out? > > Also, I am wondering what would happen to the automatic transmission > if the governor completely failed. Lets say the two circuit boards > inside are completely removed. Could the transmission shift at all? > Would the transmission flip out and be damaged severely? I'm not > planning on doing this, I'm just wondering. > > thanks, adam