I have a 2018 Chevy 2500HD gas 4WD, end every time I have serviced it it has been a royal PITA to grease the pitman arm, since the grease zerk is on top and there are a bunch of things in the way. Finally, after five years of cussing I put together a simple "U" adapter that makes it easy to come up from below it. I don't know why I didn't think of it years ago, but I thought that if anyone else has this truck that they might want to make one too. I think it will also work on the idler arm, which is a PITA too but not as bad as the pitman arm.
The other thing that helps a ton is the LocknLube coupler for the grease gun that someone mentioned on here several months ago (sorry, I can't remember who it was). That was one of the best tips I ever got. They are great, especially for something like this. I put one on a pistol grip grease gun and it is a true one-hand operation, which is super helpful for things like this, needle greasers, etc. I got two of them and put the other one on a "regular" grease gun and it works great for greasing my tractor. It's great to find something that actually works as advertised!
The other thing that helps a ton is the LocknLube coupler for the grease gun that someone mentioned on here several months ago (sorry, I can't remember who it was). That was one of the best tips I ever got. They are great, especially for something like this. I put one on a pistol grip grease gun and it is a true one-hand operation, which is super helpful for things like this, needle greasers, etc. I got two of them and put the other one on a "regular" grease gun and it works great for greasing my tractor. It's great to find something that actually works as advertised!