Transmission Service Info Astro / Safari

Fluid is changed every 30k miles according to GM, there is no specification for the filter, I would change it every other transmission fluid change.
How much does it cost to service the transmission (4L60E) on a gen II Astro or Safari? What type of fluid is required? What are the torque specs for the pan bolts? What is a shallow vs a deep pan? How do you properly check the fluid level? These questions are answered in the video.