Instrument Cluster Issue

[THI]

I purchased a 1999 Silverado 1500 last week and knew when I bought it that either the Check Engine light was burned out or missing as it would not light when turning the key to on. I pulled the instrument cluster out this weekend and discovered that the bulb is actually missing. Here is where the problem come in, the bulb is not a the typical one that twists into place, and it looks like it was directly hooked up to the circuit board! What I have not been able to find is information on how to replace it - I either run into how to read the codes (I already know how to do that) or check the fuse but nothing else on that circuit is out, and as I mentioned the bulb is MISSING!

What I would like to know is there an easy fix, or do I need to send the Instrument cluster out for repair? If I need to send it out for repair - where would I be able to send it? I have been dealing with and working on Square Bodies for 50 years and although the instrument cluster bulbs are a paid to get at on those, this cluster pops out easily and everything works as it should except the Check Engine light, I think it was removed so someone would not have to look at it as one of the upstream O2 sensors is disconnected.