cost to replace knock sensor on 2000 Chevrolet Silverado 1500

cost to replace knock sensor

Asked by for the 2000 Chevrolet Silverado 1500
how do you know the knock sensor is bad?
2 answers
the knock sensors are $60 a peice i just replaced mine there under the intake its not hard to change. i changed mine but the code still says low input on the knock sensor