My underside has some good squeaks going on. Belts are pretty quiet. But I'm not 100% sure what to grease up. Has anyone had luck in just having a shop grease it up while it's on the lift?

 

Sometimes. Usually, the ball joints start squeaking first.

If you have a lot of OEM parts, then just figure out what's worn and replace them with Moog parts with zerk fittings. Serviceable parts will last you almost forever and are preferable to sealed units.

 

Squeaking can also be dry rubber bushings, leaf springs, or even loose body bolts. Could also be dry u-joints.

 

Good call on the U joints. Also I removed my squeaking my cleaning up and greasing my control arm bushings. They get pretty squeaky after a while (from becoming dry and dirty etc..) and will be noticeable when going over speed bumps etc.. I just cleaned with some seafoam deep creep to remove the crud, let dry and then grease.

 

I just got new upper control arms so I hope they wouldn't be squeaking. Even when the trucks not running, when I close a door, I can hear something squeaking under there and I can't figure out what it is.

 

Mine does that too! It drives me nuts.