if its the GTA with the 5.7, the 700R4 is, in my opinion, the best transmission out there.mine is amazing, shifts on a dime, has a low first gear, and really runs great with the 5.7
On the back of the trans. There should be a vacuum line running to it.
87 trans will fit 88 but not to sure about 88 1/2 and later models
Down same tube that holds trans dipstick.
It is on the top of the pump on the front of the trans inside the bell housing.
The engine or transmission has to come out, one or the other, which ever is easier.
Is it a manual transmission or and automatic? Need to know. Auto the dipstick is to the back of the engine looking to the passenger side. Sometimes it will be a Red knob or Black. Manual trans don't have a dipstick just a plug on the side of the trans, about the middle of the trans half way up.
pan/pan gasket also the trans cooler lines that go up to radiator
17mm (works for a 1998)
I dont know but i have a 88 & i think the trans in mine is slipping. My check engine light came on
Manual 3 speed trans, 88 mph.Manual 4 speed (overdrive) trans, 88 mph. Automatic trans, 86 mph.
Harley Sport-Trans Fluid if you can find it. I use it in mine religiously. Works great!
80w90 gear oil works fine. so need for synthetic in your case.