WHERE TO PUT THE TRANSMISSION OIL

What you need to do is drain all the oil in the gearbox of transmission.
Replace with a NEW solenoid kit and put in NEW transmission oil. Recycle the old oil at your local mechanics shop.
If you don't change the oil, the old oil will cause the solenoid to stick.

DON"T PUT OIL IN THE ******. be sure you hhave the correct ****** fluid

What Transmission Solenoid did you replace ? Pressure control solenoid ? Shift control ? P0522 code is not saying oil pressure is low , It's saying the PCM is seeing sensor pressure low ! Do you know how to test automotive electrical circuits with a volt meter ? An this has nothing to do with your gears lit up . Different problem .

call your auto parts store, we don't know if it's the air filter, fuel filter, oil filter, cabin filter, pvc system filter, transmission filter, p/s filter, don't know what kind of car, size of engine, need to know more information that I NEED A FILTER.

The transmission dip stick is on the left side of the engine toward the rear and has a red snap clip on it . Transmissions are always red and engine oil is always yellow so you don't put the wrong oil in the wrong place . However you didn't say what make or model but it will have a red dip stick pull out handle and every chevy i have ever seen for a 96 is in this area . Look around for it because its there and red

Hello,
Manual transmissions have a fill plug and a drain plug on the side of the transmission. The fill plug is a little above the drain plug. Pull the fill plug and fill the transmission until the transmission fluid just barely seeps out and re-plug the transmission. That is the proper way to fill it. You will need a long stem funnel to give you the room you need to fill it. Your transmission requires a 10W30 weight motor oil, just like your engine. If you have a little time and 3 or 4 quarts of oil laying around you can pull the fill plug first and THEN the drain plug and let all the oil drain out. Then plug the transmission and re-fill it with fresh oil and this is a transmission flush for your transmission. You just saved $70 shop charge doing this. I say pull the fill plug first and THEN the drain plug because the last thing you want to do is pull the drain plug first and then find out the fill plug has welded itself and won't come out and now you can't fill the transmission. Fill plug first always.
Regards, Tony

engine oil is different to transmission oil . your engine oil should be sae 40 . dont use gear oil for it is for transmission.

I haven't changed the fluid in a Catera, but all the auto trans cars I have, it's added through the dip stick tube.

there is a cap on front low on trans but you have to pull drain plug don worry nothing will come out unless trans is already full if it needs fluid none will come out i am a vw tech and i know that sounds off the wall but it is true

Don't listen to the other guy, I own a 1990 1.8L mazda protege with a manual transmission. Yes it will make it easier to hoist it up. I am not going into extreme detail so as long as you know a little about cars this will be a great help.
on the transmission locate the drain plug, it will be on the bottom of the transmission. don't loosen it yet you want to make sure you can fill the transmission before you drain it. there is no fill plug, you have to fill the transmission through the hole the speedometre cable is attached to the transmission. the speedometre cable is straight up and down/vertical, it should be above the passenger side cv shaft coming out of the transmission.
remove the small bolt holding it in place and then pull it straight up and out of the transmission. now drain the transmission. put the drain plug back in and start filling, make sure not to overfill you are not supposed to fill it right full.
Make sure to check the fluid level as you fill, the transmission is at the right level when the gear oil is just at the top of the speedometre gear that is on the end of the cable that is inserted into the transmission.
I believe these transmissions take 75w 90.
Hope this helped you, and maybe future people who view this looking for help.