Where is the Oil fill plug for transmission

'Transmission Fluid' in a manual transmission vehicle is called 'gearbox oil'. On the gearbox, there is a drain plug in the bottom somewhere and a fill plug on the side. You drain, clean the drain plug, replace the copper washer and put the drain plug back in. Fill the gearbox with oil until the oil starts to weep out of the filling hole. Replace the fill plug.

Google

year make model change gearbox oil

Please include 'year make model' in all questions in this category. Thanks.

Manual gearboxes usually require a gearbox oil change every 30,000 to 50,000 mi (48,000 to 80,000 km). Automatic gearboxes usually have gear oil change intervals of between 60,000 to 100,000 mi (96,000 to 160,000 km). It's advisable that you change your gearbox oil filter at the same time as your oil.
Aug 23, 2019

When and how to check and change your gear oil and filter

..

I am not familiar with the model so I can't accurately answer your question.
There has been a number of European transmissions that weren't fitted with an oil filler/level plug, some were fitted with a level plug in the integral differential/final drive housing but the transmission shouldn't be filled through these. There have also been transmissions with no drain plug.

Many of these had to be drained and then refilled from the top of the casing by removing the breather or speedo drive and if no level plug was provided filling was by a measured quantity.

It is advisable to obtain good model specific information before you proceed.

no drain plug and being a gm product probably not dipstick either and that means no place for a diy to fill it
the pan comes off toe change the oil and the new oil is pumped in to a set amount by accredited transmission specialist shops

You need to get under the car, identify the transmission oil pan and look for the drain plug:


Place a large plastic dish beneath the drain plug and the undo the plug. Allow the old fluid to drain into the dish. Replace the drain plug.

Locate the filler plug - it will be on the side of the transmission, higher up. Use bottles with spouts to fill with the correct amount of transmission fluid .. or .. possible .. fill with fresh transmission fluid via the transmission dipstick.



The filler plug

Depends on your engine.

1980 JEEP CJ-7 2.5L 4-cyl Engine Code [B]
CAPACITIES
Engine, GM without filter..........2.4 quarts[1]
Wix Filter ........ 51040
Cooling System, Initial Fill..........8.0 quarts
Automatic Transmission, A904, 30RH Initial Fill..........4.0 quarts[2]
Automatic Transmission, A999, 32RH Initial Fill..........4.0 quarts[2]
Automatic Transmission, Total Fill
3 speed A999, 32RH..........8.4 quarts
3 speed A904, 30RH..........7.0 quarts
Manual Transmission, 4-SPD, SR-4..........3.0 pints
Manual Transmission, 4-SPD, T176..........3.6 pints
Differential, Front..........2.5 pints[3]
Differential, Rear..........4.9 pints
Transfer Case,..........4.0 pints

1. Add extra oil when replacing filter. After refill check oil level.
2. With engine automatic transmission operating temperature, shift through all gears.
Check fluid level in NEUTRAL and add fluid as needed.
3. 1984-1992 Models with command-Track, add 5 oz of 75W-90 GL-5 to shift motor housing opening.

TORQUES
Oil Drain Plug.....25 ft-lbs
Manual Transmission T176
Fill Plug.....15 ft-lbs
Drain Plug.....15 ft-lbs
Manual Transmission SR4
Fill Plug.....20 ft-lbs

1980 JEEP CJ-7 4.2L 6-cyl Engine Code [C]
CAPACITIES
Engine, without filter..........5.0 quarts[1]
Wix Filter..... 51522
Cooling System, Initial Fill..........11.0 quarts
Automatic Transmission, A904, 30RH Initial Fill..........4.0 quarts[2]
Automatic Transmission, A999, 32RH Initial Fill..........4.0 quarts[2]
Automatic Transmission, Total Fill
3 speed A999, 32RH..........8.4 quarts
3 speed A904, 30RH..........7.0 quarts
Manual Transmission, 4-SPD, SR-4..........3.0 pints
Manual Transmission, 4-SPD, T176..........3.6 pints
Differential, Front..........2.5 pints[3]
Differential, Rear..........4.9 pints
Transfer Case,..........4.0 pints

1. Add extra oil when replacing filter. After refill check oil level.
2. With engine automatic transmission operating temperature, shift through all gears.
Check fluid level in NEUTRAL and add fluid as needed.
3. 1984-1992 Models with command-Track, add 5 oz of 75W-90 GL-5 to shift motor housing opening.

TORQUES
Oil Drain Plug.....30 ft-lbs
Manual Transmission T176
Fill Plug.....15 ft-lbs
Drain Plug.....15 ft-lbs
Manual Transmission SR4
Fill Plug.....20 ft-lbs

1980 JEEP CJ-7 5.0L 8-cyl Engine Code [H]
CAPACITIES
Engine, without filter..........4.0 quarts[1]
Wix Filter..... 51258
Cooling System, Initial Fill..........13.0 quarts
Automatic Transmission, A999, 32RH Initial Fill..........4.0 quarts[2]
Automatic Transmission, A904, 30RH Initial Fill..........4.0 quarts[2]
Automatic Transmission, Total Fill
3 speed A904, 30RH..........7.0 quarts
3 speed A999, 32RH..........8.4 quarts
Manual Transmission, 4-SPD, SR-4..........3.0 pints
Manual Transmission, 4-SPD, T176..........3.6 pints
Differential, Front..........2.5 pints[3]
Differential, Rear..........4.9 pints
Transfer Case,..........4.0 pints

1. Add extra oil when replacing filter. After refill check oil level.
2. With engine automatic transmission operating temperature, shift through all gears.
Check fluid level in NEUTRAL and add fluid as needed.
3. 1984-1992 Models with command-Track, add 5 oz of 75W-90 GL-5 to shift motor housing opening.

TORQUES
Manual Transmission T176
Fill Plug.....15 ft-lbs
Drain Plug.....15 ft-lbs
Manual Transmission SR4
Fill Plug.....20 ft-lbs

Oilman

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

The drain plug should be on or near the bottom of the transmission the fill plug will be closer to middle of transmission on either side

to change your oil you will need to get some running boards so your truck will be up on angle for the oil to drain. Get an oil catcher for the old oil to drain in and some oil catch clothes for incase of spill. find the drain plug under the oil pan and loosen slow till oil comes out and make sure the catch is there and dont bring the plug out fast do it slow, after all oil is drained then you must remove the oil filter, its located on the side bottom of the engine what you will need is a gripper ring that goes around the filter to loosen it then take it off and be careful they will be some oil still inside it. when putting on the new filter make sure the oil plug is screwed back in and you want to take some new oil and put around the black seal ring on the filter then only hand tighten it. fill your truck with the recamended oil. Now for the transmission fluid the procedure is the same for the oil except you probably dont need the truck up on the running boards any more. on the transmission they will be a drain plug and catch the old fluid please like the oil after its dry put plug back in and go under hood and get a small funnel and put in the check fluid hole and start filling with the recomended fluid and the suggested how much. or put two corts and stop and check with the check stick then just keep filling till it says full on the check stick level.

manual transmissions have an oil drain plug located at the bottom of the trans case and a fill plug located on the side, remove fill plug (side) and oil level should be right at the same level as the hole, just running out

there is no oil fill tube. The correct procedure is to fill the pan through the drain plug. Remove the small inner plug, with the vehicle running fill the pan until ther is a small steady stream coming out of the drain plug.