Maintenance - 2nd Gen, Automatic, 2WD, 4 Cyl

My truck has just over 60k, so I'm planning on finishing the scheduled maintenance. The write-ups here are incredible, but I'm a bit lost on some things specific to my particular truck as most are for 4X4s and Manual transmissions.

I've changed both cabin and engine air filters, the oil, and also purchased new wheels/tires.

For the differential change, since I don't need the LSD additive, I'm supposed to add 3.5 qts, rather than just 3?

Also, I'm unsure of which (if any) zerks to find on this automatic 4X2. If there are some, I should use NLGI Grade 2 in this hot climate?

After cleaning the throttle body, is it necessary to change the oil again?

Any other recommendations on maintenance steps to take?