I just did the 722.9 Transmission service.
It was horrible.

[RANT]
1. damn gasket moved un-noticeably little while installing. I already put the fluid in. Had to take the pan out laying upside-down, while fluid was in there. Reinsert the pan, and screw that while holding the pan w/ 4-5qt of ATF134. Spilled some on my face, and my hair.
2. They pan screw needed to be set at 4N-m (35in-lb or 4ft-lb) of torque. The damn screw broke twice while installing w/ torque wrench. It was made to break even little bit more of a torque (known to break even at slightly higher torque part # ELR-896000).
I had to use 2 previous screws.

3. The cheap OBD II reader would NOT read the ATF temperatures. It had to be at 45C to see the correct volume of the fluid. So, I had to goto Harbor Freight tools and had to get an infrared temp reader.

4. I had to fill (and refill) under the vehicle while car was running. Glad that my arm didn't get burned by exhaust or catalytic.

5. I had to shampoo my hair 3 times after the job was done. Each 3 times, I had to let shampoo stay on my hair for about 2-3min each.
[/RANT]