How to replace the Knock Sensor (KS) 1 on GMC Sierra 3500?

To replace the Knock Sensor (KS) 1, drain the cooling system/engine block first. Remove the knock sensor electrical connector and knock sensor. For installation, apply the new knock sensor making sure the fastening of the new knock sensor is at 20 N.m (15lb ft) using Fastener Notice as per the place in the Service Precautions. Then, attach the knock sensor electrical connector and fill the cooling system/engine block.

OEM GMC Sierra 3500 Knock Sensor

Engine Knock Sensor

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GMC Sierra 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:
- 2001-2006 GMC Sierra 3500 | Base, SL, SLE, SLT, WT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS
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GMC Sierra 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:
- 2001-2006 GMC Sierra 3500 | Base, SL, SLE, SLT, WT | 8 Cyl 8.1 L GAS

GMC Sierra 3500 Knock Sensor

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GMC Sierra 3500 Knock Sensor Parts and Q&A

Knock Sensor
12589867
Q: How to replace the Knock Sensor (KS) 1 on GMC Sierra 3500?
A:
To replace the Knock Sensor (KS) 1, drain the cooling system/engine block first. Remove the knock sensor electrical connector and knock sensor. For installation, apply the new knock sensor making sure the fastening of the new knock sensor is at 20 N.m (15lb ft) using Fastener Notice as per the place in the Service Precautions. Then, attach the knock sensor electrical connector and fill the cooling system/engine block.