Alright....so no one can answer this....fine. Ill do it myself.
The Body Relay Block contains all the relays for the body functions on the 2nd gen 1998 - 2003 trucks/suvs. My specimen comes from a 99 Sonoma with no power options whatsoever. The relays equiped are for inadvertent power lamp, courtesy lamps, headlamp ground, park lamps, and im not sure. There are 5 total. The Body Relay Block is located behind the I/P Fuse Block up inside the dash.
1. First start by taking the cap off and unloading all the relays. Remember their location and position! Some have 5 pins and cannot be rotated, others have 4 pins and you can insert them backwards.
2. The block consists of a top and bottom peices. Between them is another sandwich of plastic that holds the metal pins in place. To remove the first two halves, there is a metal insert that must be removed. I used an 11/32 drill bit. An 8mm or 5/16 will work though. The base of the metal insert is tapered outward which holds he bottom half casing together. Drill out the base of the insert until the tapered end comes loose. You should now be able to pull the metal connector through by either pulling on it with a metric 6mm bolt or tapping it out. Careful not to damage the threads if you plan on reusing it!
3. The top and bottom should now seperate exposing the metal pins inside.
The pins are double sided and have a two-sided female connector on the top. The relays plug into these female pins. If you plan to remove the double females, tip them sideways a bit and pry up gently with a flat screwdriver. DO NOT FORGET WHERE THEY GO!
4. WARNING: Xtreme caution if youre going to continue. The last halves have copper wires in the middle connecting certain pins. If you take them apart, you risk dislocating the copper wires!!
Pry the two halves apart slowly and gently. Do not stick anything far inside to pry to avoid damaging the copper wires. If the pieces do not seperate easily, look for any copper wires stuck to the top and bottom.
5. I didnt take it apart any further than this. I assume the pins can be pressed out, but dont forget to remember where the copper wires go.
I hope this was useful!