Alright boys and girls. I noticed a small box plugged into a harness under my seat. It's a Delco part, model 16152531 (serial 2071496). See picture below;
I started the truck with the module in it's current location and also unplugged and there was no change. I've searched the web looking for performance parts, original parts, and used parts and haven't come up with anything. Does anyone know what this darn thing is and what it does??
Any help would be appreciated, thanks!

I started the truck with the module in it's current location and also unplugged and there was no change. I've searched the web looking for performance parts, original parts, and used parts and haven't come up with anything. Does anyone know what this darn thing is and what it does??
Any help would be appreciated, thanks!