Just one on each leaf , top of rear axle on each end, couple on the drive shafts on my 2018, can't see them changing those spots on the newer ones. Lots of posts here on that.
Did mine today, man were they dry🫣. Here are pics of the 8 spots, with screwdriver pointing to them. The rear axel has a tiny hole on the top on each side so you will know when it starts to come out.
Thanks for pointing out the zerks. Rear axle grease points took a bit to see grease come out of the weep hole. Shafts and leaf springs didn't take bur a quarter pump.
My pleasure, I have limited experience with mechanical stuff, so whenever I post something, I try to explain it the way I would want it explained to me (which is crayon style )