Well the first thing on mine that started squeaking was the shock ends. Greased them up once and they have been good ever sense. Then..almost all of the a-arm bushings at one time or another seized on the sleeves and started turning in the a-arm tubes. All had to be cleaned, glued in place and the sleeves had to be re-polished. Most I also added wear washers to the ends to help the end-play wearing. Then came the swaybar bushings..they got replaced with polyurethane but still can squeak sometimes. One little trick that helps- if you jack it up enough to get the tires off the ground, the suspension falls forward, making the sleeve-to-bushing contact on the opposite side and when you grease it, the grease will go between the sleeve and the bushing where it bares pressure when on the ground...where you really want the grease. If you don't, it just goes by it on the other side and may never get all the way around and will always squeak.
That all being said I just got done with greasing mine and I still have a slight grown on one in the rear somewhere so..nothings perfect.