I have a 2003 S-10 KR5 Crewcab. My problem is I have a squeak someplace in the rear springs I can't get rid of. Every time I push up and down on the back end I get this terrible squeaking sound. I've tried to pinpoint it and best I can tell it comes from the leaf springs. I have washed them off, sprayed WD40 between leaves and nothing has worked. Can anyone provide any suggestions hear to help me out

 

Try using the WD on the rubber bushings. One may be dry. Also want to look to see if the bushings are so worn, that there is steel rubbing against steel near the Bolts

 

could be one or two things ,the nylon wear pads on the ends of the leaf'e are worn out ,or the eye bolt's that hold the spring's to the hanger's are too snug .it help's too remove them one at a time and put never seize on them .had to do it to several new trucks.