Okay so I decided to do a how to, step by step thread on removing these cause there kinda a PITA and that way itll be here if anyone is confused about it or has questions. This is my first write up on anything so here goes.
the vehicle is a 2008 SLT 1500
Okay I first started by jacking the truck up by only lifting the frame (placed jack under rear hitch)
Next youll want to place another jack under the rear differential and place a small amount of pressure. NOTE: this is only to hold the weight of the axle, you don't want to lift the axle up at all as it will put tension on the leaf springs.
Remove the 4 nuts from the U-Bolts using a 21 mm deep socket and remove them from the assembly
After removing the U-Bolts you will notice a 9/16 bolt in the center of the plate that is on top of the leaf spring pack. you should be able to remove this bolt without holding the opposite side of the bolt.
Next there will be what looks like 2 metal locking washers (idk the technical name) and you can remove these with a flathead screwdriver.
After taking these off remove the plate on top of the pack and at this point there should only be a center alignment bolt through the leaf spring pack and a "dowel pin" which we will get to in a minute. NOTE: that nothing should be connecting the axle to the springs at this point.
Next place a C-Clamp close to the center bolt so you can relieve tension from the bolt in order to remove it. In order to get this bolt out you have to hold a Rounded head on the bottom of the leaf spring pack (I used a pair of vice grips). Do yourself a favor and let these soak over night so they are easier to unscrew because mine were really on there.
After finally getting this out the only thing that should be connecting the leafs to each other is this dowel pin.
I spent forever trying to figure out how to remove this pin because I couldn't find information on it anywhere. I even went to the dealership and asked for a blown up diagram of the leaf springs on my truck and there schematics didn't even show that this pin existed. So I did what any other frustrated person would do...hit it with a hammer till it comes out.
youll want to keep the leaf springs clamped while you hit the top of this pin down towards the Overload spring until it is flush with the top spring in the pack (one connected to the truck and shackles). then slowly remove the C-Clamp and the top spring should separate from the bottom 2 springs and the overload.
then continue to repeat this method one spring at a time until the overload spring is the only one with the dowel pin in it and remove it from the assembly.
Next attempt to get the center alignment bolt back through the pack...you may have to hit the ends of each spring in different directions to get them to line up correctly. this gets kind of frustrating but if you play with it long enough it will work out.
the center alignment bolt will now be too long to tighten down the leafs to a secure point. to solve this problem I went to ace hardware and got 4 (2 for each side) high grade steel thick washers to compensate for the length. (32 cents a piece).
Tighten down all the bolts (work in reverse order) and BINGO your Overload Spring is out.
Here are pictures of my truck (shes a little dirty) with 2 inch mcgaughy rear drop shackles and the Overloads out.
My truck now sits pretty much dead level and the rear end rides a lot softer.
I will however be installing the Belltech Street Performance 2212FF shocks and grinding down the bumpstops 2 inches.
Thanks for viewing