Question about 2003 Chevrolet Silverado 1500

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Knock sensor wiring diagram

I'd like to see the wiring diagram for the knock sensor

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Well i bought a book we have a 2009. Doesnt show the wiring diagram to the knock sensor, ones on used engine are cut and dont know which ones to wire them up too . any other suggestions

Posted on Apr 06, 2013

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Posted on Jan 02, 2017

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SOURCE: I need Info & photos of how to replace the Knock Sensor wiring harness.

They sell the books for your vehicle at the parts store and I think it is called a Haynes Suburban, GMC Truck Repair Book cost between $14 to $20. That way you will have the pictures in front of you while you work. I am really not sure of the name of the book.

Posted on Jun 02, 2009

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How do you replace the knock sensor 1 bank 1 on a GMC Sierra 1999?


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GMC 4.3L DTC P0330 flashing MIL


P0330 - Knock Sensor 2 Circuit Malfunction (Bank 2)
A knock sensor tells the engine computer when one or more of your engine's cylinders are "knocking", that is, exploding the air/fuel mixture in a way that delivers less power and can be damaging to the engine if prolonged. The computer uses this information to tune the engine so that it doesn't knock. If your knock sensor wasn't operating properly, so that it was always indicating a knock, the engine computer's response may have been to change the ignition timing on your engine. Knock sensors generally bolt into or thread into the engine block. This P0330 code may show up intermittently or the Service Engine light may be lit constantly. Other knock sensor related DTC codes include P0325.

Symptoms: You may notice drivability problems including a lack of power and perhaps some hesitation. There may also be other symptoms.

Causes: A code P0330 most likely means one or more of the following has happened:
The "B" knock sensor is faulty and needs to be replaced
There is a wiring short/fault in the knock sensor circuit

Possible Solutions:
Check the resistance of the knock sensor on bank 2 (compare it to factory specs)
Check for broken/frayed wires leading to the sensor
Replace the knock sensor on bank 2


Hope helps.

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Why does my car throw the code P0100 and P0325? I have a 1995 Nissan 240sx. and it has a random misfire once in a while.


Hi,

Often a single issue can trigger multiple diagnostics codes, especially if the circuits are closely related.

Code P0100 = Mass Air Flow (MAF) Circuit malfunction

The computer has detected an issue with the MAF sensor.

- Verify the MAF sensor wiring is connected and wiring is in good condition
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Code P0325 = Knock Sensor # 1 Circuit malfunction

A knock sensor tells the engine computer when one or more of your engine's cylinders are "knocking", that is, exploding the air/fuel mixture in a way that delivers less power and can be damaging to the engine if prolonged. The computer uses this information to tune the engine so that it doesn't knock. If your knock sensor wasn't operating properly, so that it was always indicating a knock, the engine computer's response may have been to change the ignition timing on your engine. Knock sensors generally bolt into or thread into the engine block.

- Check condition of the knock sensor wiring.
- Test the 'Ohms' reading of your Knock Sensor (undo the connector and measure the pins) to ensure it is within spec (ask Nissan for this measurement). If out of spec, replace the knock sensor.

Cheers,


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