Have a creaking noise when steering my 96 F150 from the driver side. Hosed down the radius arm bushings, ball joints, steering linkage ends, and the I beam pivot bushings on both sides with some silicone spray and let it soak in and it's still there. BTW, it's really cold here at the moment and I think that may have something to do with it. Radius arm bushings were replaced last year with Moog polyurethane bushings.

 

poly can be noisy - especially when cold...

while moving or just sitting?

bounce it or not?

 

When driving and sitting still. Had an auto shop instructor buddy of mine listen to it and he thinks it's likely a dried out ball joint. The lower ball joints on my truck are the non greaseable originals however the uppers are greaseable. However since the twin I beam is coming out soon to be replaced by a D44 TTB I'm not too concerned with it. I will however jack the drivers side up tomorrow and see if there's any play in the lower ball joint.