How to remova the transmission from a 96 chevy lumina

The engine must be supported from above the vehicle. Then the transmission and cradle support is lowered as a unit.
Procedure as follows.

1. Disconnect battery ground cable, then remove air cleaner assembly.
2. Disconnect electrical connectors at transaxle, then remove wiring harness retainer to transaxle shift cable bracket.
3. Remove shift cable bracket and heat shield assembly, then wire cable/bracket assembly to body.
4. Disconnect vacuum supply to modulator at transaxle, the remove transaxle indicator tube retaining bolt.
5. Remove battery ground cable from grounding stud, then remove stud.
6. Install suitable engine/transaxle support assembly, then raise and support vehicle.
7. Remove both front wheels, then the frame retainers for front engine wiring and power steering cooler lines.
8. Remove both tie rod ends from steering knuckles, then the steering gear heat shield.
9. Remove steering gear to frame mounting bolts. Position gear clear of frame.
10. Remove front engine mount to frame retaining nuts, then front and rear transaxle mount nuts.
11. Disconnect lower ball joints from steering knuckles, then remove flywheel covers from engine and transaxle.
12. Remove torque converter to flywheel, then the transaxle fluid pan.
13. Disconnect transaxle cooler lines at transaxle and bracket.
14. Remove both drive axles from transaxle. Secure axle to strut assembly.
15. Disconnect speed sensor connector at transaxle, then support transaxle/frame assembly with transaxle table.
16. Remove engine to transaxle bracket and bolts, then retaining bolts from transaxle to engine.
17. Lower transaxle/frame assembly from vehicle, then the transaxle from frame.
18. Reverse procedure to install.

Drop it out the bottom. Need a lift. You can not do that on your back in the driveway. Take it to a trans shop.