How to replace the Knock Sensor (KS) on Chevrolet Express 3500?

The replacement process starts with Intake Manifold removal before the ks wiring harness assembly and then the ks unit itself. Installation of the Knock Sensor requires you to torque the sensor to 20 n.m (15 lb ft) following the instructions in the service precautions fastener notice. Reinstallation of the ks wiring harness assembly follows after both the Intake Manifold.

How to service the knock sensor on Chevrolet Express 3500?

The Knock Sensor service process begins with disconnecting the negative Battery Cable and raising the vehicle. Use a wrench to disconnect the Knock Sensor connector before removing the Knock Sensor from the cylinder block . Insert and tighten the Knock Sensor into the cylinder block with a torque of 19 n.m (14 lb ft). Seal the Knock Sensor harness connector before lowering the vehicle then restore power from the negative Battery Cable.

OEM Chevrolet Express 3500 Knock Sensor

Engine Knock Sensor

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6 Knock Sensors found

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Chevrolet Express 3500 Knock Sensor Part Number: 12623730
$13.47 MSRP: $25.30
You Save: $11.83 (47%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor, Distributor (Also Knock Sensor); Ignition Knock (Detonation) Sensor
- Replaces: 12570125
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2008-2020 Chevrolet Express 3500 | Base, LS, LT | 8 Cyl 4.8 L FLEX, 8 Cyl 4.8 L GAS, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L FLEX, 8 Cyl 6.0 L GAS
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Chevrolet Express 3500 Knock Sensor Part Number: 12623095
$23.43 MSRP: $44.02
You Save: $20.59 (47%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Sensor, Distributor (Also Knock Sensor)
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2018-2024 Chevrolet Express 3500 | Base, LS, LT | 6 Cyl 4.3 L FLEX, 6 Cyl 4.3 L GAS, 8 Cyl 6.6 L GAS
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Chevrolet Express 3500 Knock Sensor Part Number: 12589867
$62.53 MSRP: $127.00
You Save: $64.47 (51%)
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Product Specifications
- Other Name: Sensor, Distributor (Also Knock Sensor)
- Replaces: 10456603
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2003-2007 Chevrolet Express 3500 | Base, LS, LT | 8 Cyl 4.8 L GAS, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS
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Chevrolet Express 3500 Knock Sensor Part Number: 10456288
$45.57 MSRP: $92.57
You Save: $47.00 (51%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor, Distributor (Also Knock Sensor); ESC Sensor; Sensor, Engine Crankcase Ventilator
- Replaces: 10456018
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1996-2002 Chevrolet Express 3500 | Base, LS | 8 Cyl 5.7 L BI-FUEL, 8 Cyl 5.7 L CNG, 8 Cyl 5.7 L GAS
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Chevrolet Express 3500 Knock Sensor Part Number: 12591312
Product Specifications
- Other Name: Sensor, Distributor (Also Knock Sensor)
- Replaces: 10456500
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2001-2002 Chevrolet Express 3500 | Base, LS | 8 Cyl 8.1 L GAS
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Chevrolet Express 3500 Knock Sensor Part Number: 10456232
Product Specifications
- Other Name: Sensor, Distributor (Also Knock Sensor)
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1996-2000 Chevrolet Express 3500 | Base, LS | 8 Cyl 7.4 L GAS

Chevrolet Express 3500 Knock Sensor

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Chevrolet Express 3500 Knock Sensor Parts and Q&A

Knock Sensor
12589867
Q: How to replace the Knock Sensor (KS) on Chevrolet Express 3500?
A:
The replacement process starts with Intake Manifold removal before the ks wiring harness assembly and then the ks unit itself. Installation of the Knock Sensor requires you to torque the sensor to 20 n.m (15 lb ft) following the instructions in the service precautions fastener notice. Reinstallation of the ks wiring harness assembly follows after both the Intake Manifold.
Knock Sensor
10456288
Q: How to service the knock sensor on Chevrolet Express 3500?
A:
The Knock Sensor service process begins with disconnecting the negative Battery Cable and raising the vehicle. Use a wrench to disconnect the Knock Sensor connector before removing the Knock Sensor from the cylinder block . Insert and tighten the Knock Sensor into the cylinder block with a torque of 19 n.m (14 lb ft). Seal the Knock Sensor harness connector before lowering the vehicle then restore power from the negative Battery Cable.