In throught the dip-stick hole...
In the transmission.
You put the Transmission Fluid in the Transmission (fill point transmission drip stick tube)
Depending on what trans type. A manual trans has a fill plug on the side of the trans. And a auto has a dip stick which is located in the engine bay
The transmission will fail.
Low Transmission fluid
Buy a transmission funnel and pour the fluid in the dipstick tube.
In the transmission.
In the transmission!
The transmission fluid is added where you check it, on the toppish left (driver's) side of the transmission.
how do I put transmission fluid in a Saturn vue
For automatic transmission: remove transmission dipstick, put fluid in dipstick tube with funnel. be careful not to overfill.
Transmission fluid is always put in through the Tranny dipstick tube.