Acdelco 25832864 or 20972082? What connector am I required to look at to know if I have tin or gold connectors to get the right accelerator pedal position sensor/pedal?

I am having trouble finding a pic or video reference. Your help is greatly appreciated.

2007 Silverado 1500LT ext. cab 2wd 4dr 5.3l Z71 suspension

Izzy