Here ya go, from autozone.com
All of the maintenance items that you listed can easy be performed in your driveway.
While you are under the truck i would inspect the following, starting from the front.
- Steering rack, tie-rod ends. (check for leaks or torn boots)
- Upper and lower balljoints (check for torn boots, to see if worn, raise vehicle off the ground and grab the top and bottom of the wheel and wiggle it back and forth, if there is play it is either the balljoints or hub bearings. To determine which it is, have someone look at the balljoints while you move the wheel and if they are not moving its time for some hub bearings.
- Generally look over your engine and tranny for any leaks coming (lines, pans etc)
- Check u-joints in driveshaft. Grab the driveshaft close to the u-joint and try and move it up and down or side to side. If it does move, you need to replace that u-joint.
- While you have the tires off i would inspect the brake pads/shoes for wear. Also in the rear check the wheel cylinders for leaks. SOME small amount of seepage from the seals is normal, a large amount where the backing plate and majority of the wheel cylinder has fluid over it, is not acceptable.
- Check fluid in rear axle, not sure of 7.5's but 8.8's have the fill plug on the drivers side front of the diff and you should be able to put your pinky in the hole and point it downward and get fluid on your finger. You probably should change it if you have not done so. Make sure if you have a limited slip you get additive for it.
- Check the shocks. While the truck is siting, bounce the front and rear end, if it does not stop bouncing after the first or second bounce after you stop moving it, the shocks are probably going to need replacing.
- Check the CV axles, make sure the boots are not ripped and it might not be an obvious rip but check the inside of the wheel and the wheel well for gease and that signifies a broken cv boot.
- Check the front diff fluid. It's fill plug is on the drivers side close to the frame rail.
- Also check the rubber brake lines for cracking, they shouldn't be, but it doesn't hurt to check them.
Thats all i can think of right now, if i missed something, someone will fill ya in.