No, but depending on mileage that's probably not the only problem
Yes, by removing the manual transmission and installing an automatic. Unless you have a donor car this would be extremely expensive. My advice is that if you want an A/T sell the car you have and then buy one with an automatic.
No. They are two different transmissions.
There is no drain plug assuming it is an automatic transmission it is drained when removing the transmission pan and changing the transmission filter.
The automatic door lock switch is located, on your 1994 Chevrolet Cavalier, beneath the shifting column. The switch can be accessed by removing the center console.
Many automatic transmission do not have drain plugs. You drain the ATF by removing the transmission fluid pan. If you are changing the ATF, you should pull the pan anyway, to replace the ATF filter. You will also need a new pan gasket.If there is an ATF drain plug, it will be located in the transmission fluid pan, on the bottom of the transmission.
It doesn't have a transmission dipstick. The fluid level is checked by removing a plug from the transmission housing from under the vehicle. It is best done with vehicle up on a lift and level.
I did it, just supported transmission and changed engine just like any other car.
If it is an automatic, there isn't one. As stupid as it seems, the oil level is checked with a level plug located in the side of the transaxle that is only accessible when the car is on a hoist. The car must be level, transmission warm and on a level surface (hoist) when removing the plug to check. The transmission is filled by removing the vent located on the top of the transmission.
If the car is an automatic, there should be a dipstick for the tranny fluid that will be labeled, "use automatic transmission fluid only". If the car is a standard then you have to get under the car and pull the drain plug and check the level there, and standard cars don't use Transmission Fluid, they use 902w gear oil. May I add, that you don't' check a manual transmission level by removing the drain plug. You check it by removing the fill plug. Also not all manual transmissions use the same lube. Some do indeed use automatic transmission fluid. Read you owner's manual. Also there are some A/T that don't have a place to check the fluid level. They are sealed for life transmissions.
If the car is an automatic, there should be a dipstick for the tranny fluid that will be labeled, "use automatic transmission fluid only". If the car is a standard then you have to get under the car and pull the drain plug and check the level there, and standard cars don't use transmission fluid, they use 902w gear oil. May I add, that you don't' check a manual transmission level by removing the drain plug. You check it by removing the fill plug. Also not all manual transmissions use the same lube. Some do indeed use automatic transmission fluid. Read you owner's manual. Also there are some A/T that don't have a place to check the fluid level. They are sealed for life transmissions.
By removing the transmission from the truck, then removing the seal.
There are mant steps to removing this transmission, but the engine needs to be supported and the sub-frame removed. The transmission has to be removed from the bottom. I work at a transmission shop and have done these many times. If you don't do this all the time, i suggest taking it to a professional, can be dangerous if not knowing what you are doing.