Take a more expensive version of WD40 and look for any rubber grommets/bushings both front and rear. use the little hose that comes with it. It pinpoints your spray and therefore using less. and just spray each one you find. What you find on the left should be on the right for the most part. Make sure all nuts and bolts are tight. Shocks have a upper mount and a lower mount. Both have bushings. One shock on the end of each axle out towards the tire. Make sure those bolts are tight. You can look in your owners Manual for a labeled picture of the front and rear suspension. If not you could probably Google your truck suspension and print out pictures to take out to the truck with you. No grease fittings anymore. At least for the most part. You would be amazed at what you can learn just by doing stuff like that. GOOD LUCK BUD.