How to replace the Knock Sensor (KS) 2 on GMC Sierra 3500?

The first thing to do to replace the Knock Sensor (KS) 2 is to drain the cooling system/engine block. First, take off the knock sensor electrical connector and afterwards take out the knock sensor. Put the new knock sensor in place and tighten it to a torque of 20 N.m (15 lb ft) following the Fastener Notice in Service Precautions. After attaching the knock sensor's electrical connector, make sure to fill up 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
$65.81 MSRP: $133.68
You Save: $67.87 (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 Questions & Experts Answers

Knock Sensor
12589867
Q: How to replace the Knock Sensor (KS) 2 on GMC Sierra 3500?
A:
The first thing to do to replace the Knock Sensor (KS) 2 is to drain the cooling system/engine block. First, take off the knock sensor electrical connector and afterwards take out the knock sensor. Put the new knock sensor in place and tighten it to a torque of 20 N.m (15 lb ft) following the Fastener Notice in Service Precautions. After attaching the knock sensor's electrical connector, make sure to fill up the cooling system/engine block.