How to service the knock sensor on 2003 Chevrolet Trailblazer?

Service to the knock sensor is to lift up the vehicle, remove the connector of the harness, and a retaining bolt. Unscrew the correct knock sensor. To install, install the new sensor and tighten it using the bolt and this should be tightened according to the Component Fastener Tightening Notice. Raise the vehicle and reconnect the harness.

OEM 2003 Chevrolet Trailblazer Knock Sensor

Engine Knock Sensor

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2003 Chevrolet Trailblazer Knock Sensor Part Number: 12567446
$27.17 MSRP: $51.00
You Save: $23.83 (47%)
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Product Specifications
- Other Name: Sensor, Distributor (Also Knock Sensor)
- Replaced by: 19434672
- Item Weight: 0.40 Pounds
- Item Dimensions: 2.7 x 2.2 x 1.3 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 12567446
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2003 Chevrolet Trailblazer Submodels:
- LS, LT, LTZ, North Face | 6 Cyl 4.2 L GAS

2003 Chevrolet Trailblazer Knock Sensor

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2003 Chevrolet Trailblazer Knock Sensor Parts and Q&A

Q: How to service the knock sensor on 2003 Chevrolet Trailblazer?
A: Service to the knock sensor is to lift up the vehicle, remove the connector of the harness, and a retaining bolt. Unscrew the correct knock sensor. To install, install the new sensor and tighten it using the bolt and this should be tightened according to the Component Fastener Tightening Notice. Raise the vehicle and reconnect the harness.