Recently did an SAS on my 91. TrailGear 5” ifs eliminator. Been on the road about 3 weeks now. At first everything was smooth sounding. Just the other day i noticed a slight squeak when i jumped out. Now it has gotten a bit louder. If i shake the truck with my hand and listen to the suspension it seems like its either coming from the front leaf hanger or the shackles. Its definitely not coming from the rear of the truck. Could it be i need to grease the nipples already? Squeaking is irritating to me especially because the road to my house is a little bumpy

 

MIght have the shackles too tight.....maybe take them apart and grease the polyurethane.and not over tighten them.
Could also be that your leafs are squeaking.grease the teflon spacers between the leafs.

 

I second what ZUK said. Did you grease everything when you installed it?
Also do you live on Kauai?