knock sensor 2 location on 2005 Chevrolet Silverado 1500 HD

code reads circuit low input

Asked by for the 2005 Chevrolet Silverado 1500 HD
2 answers 1 comment
Check wiring and PCM function for that circuit. Then kill mouse that ate wire to sensor and replace harness.
in valley of engine
what are some of the causes for low input?