can anyone help me out...? not to sure where my vss wire is to wire up my n3 on my 03 chevy silverado. my truck did have the factory stereo that increased volume when speeding up but dont know which color wire on the harness was the vss....any one please help?!?!?!

Speed Sense dk. green/white 4K instrument cluster, pin A4 or PCM

The PCM (Powertrain Control Module) is in the left front of the engine compartment to the left of the fan shroud. The VSS wire is in the green plug, pin 50.

the stock radio gets that function through data

thanks so much...at work right now till 7 tonight but im gonna go ahead and check it out when i get off