I'm planning to change the oil by myself, just have few questions. Planning to change both engine oil and tranny oil.
1. Is filter easily accessible and where is it located?
2. Any special tools needed besides filter wrench(engine oil)?
3. How many quarts of each kind oil will be needed?
4. Drain plug O-rings etc.

Anything else I should know.

thanks

It'* best if you use ramps. If not, then jack the car up and use jack stands. You will need a catch pan. Slide that under the oil pan and remove the drain plug. When it'* empty, slide the pan over to the passenger side, that'* where the oil filter is. Remove that. Then take you new filter, dab your finger tip in the old oil and cover the rubber seal with some oil. Put new filter on. You do not need to crank it tight. Just good and hand tight. Then add 4.5 quarts of oil.

I plan to do a write up on this in spring.

Here'* how to do the trans oil
https://www.gmforum.com/t278813/

Thanks Dan