*edit* for domeskilla, change this topic name to Cargo Lamp LED swap...then erase this edit
thanks
...as is the window, cargo lamp and A/C controls. If I had to rate them, I'd say the window controls are the biggest bitch, but I'll have a write up for that too for those who are a little more
like me... My hommie MacADaYear will do the window control write up as we both worked on this together and take credit for these swaps
Ok, here we go....
1) Remove the little box from the truck of course.
2) on the back, move the clips out of the way and pull the box apart. If I remember correctly there is 4 of them, 2 on each side.

3) The tiny bulb you see is soldered onto a breadboard which lights up the "cargo lamp" letters, you can pull the board out if you like, but you'll have to remove the foglight button (if you have one).

Just use a soldering iron to heat the solder and the bulb(s) will pull right out. Then solder in your LED(with resistor, don't forget, very important).
4) put the thing back together and put back in truck

And there you have it!
My camera doesn't have many options on the shutter speed, and none on aperture which sucks, so while what you see here may seem too bright, in real life its PIMP!
'01 Sierra 4.8 SCSB
4.10, Eaton posi, Nelson tune, 160 t-stat, K&N Intake, Magnaflow catback, Vig 3200, Transgo+billets, 100 NX wet shot