Is there amp inputs on factory 2008 Chevrolet Silverado?
No, the 2008 Chevrolet Silverado did not have amplifier inputs in the traditional sense (like RCA inputs) in its factory audio system. The factory head unit directly drove the speakers, or in some higher trim levels, a factory amplifier. There were no external inputs available for aftermarket amplifiers to connect to. To add an aftermarket amplifier, you would need to tap into the speaker wires coming from the head unit.