Chevrolet Impala persistent knock sensor error after replacing both sensors on Chevrolet Impala

Some Chevrolet Impala owners report experiencing persistent knock sensor errors even after replacing both sensors. These issues may stem from faulty wiring, as it is crucial to replace the knock sensor wiring sub-harness when dealing with circuit or performance faults. Additionally, owners should ensure that there is five volts at the knock sensor connectors with the ignition on, and that the resistance from the sensor to ground is within the range of 3300-4500 ohms. If the check engine light is illuminated, retrieving diagnostic codes from the ECM can help pinpoint the problem area. Furthermore, issues with related components such as the crank sensor, MAF, TPS, and IAC may also trigger knock sensor errors, necessitating a thorough inspection. If these checks do not resolve the issue, it is advisable to consult a professional mechanic for further diagnosis to uncover any underlying problems.