How do you remove the knock sensor on the Chevrolet Cobalt,HHR and Saturn ION?

To remove the knock sensor, begin by turning off the ignition key and raising the front of the vehicle, securely supporting it on jackstands. If you're removing the front sensor, remove the alternator, and if you're removing the rear sensor, remove the starter motor.

Genuine Chevrolet HHR Knock Sensor

Engine Knock Sensor

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3 Knock Sensors found

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Chevrolet HHR Sensor,Knock
Part Number: 12621820
$16.65 MSRP: $31.42
You Save: $14.77 (48%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: SENSOR, Distributor (also Knock Sensor); Knock Sensor
- Replaced by: 19434675
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2009-2010 Chevrolet HHR | 5 DOOR HIGH ROOF HATCHBACK, 5 DOOR HIGH ROOF HATCHBACK SS, 5 DOOR HIGH ROOF PANEL, 5 DOOR HIGH ROOF PANEL SS, 5 DOOR UPLEVEL HIGH ROOF HATCHBACK, 5 DOOR UPLEVEL HIGH ROOF PANEL | 4 Cyl 2.0L, 4 Cyl 2.2L Flex, 4 Cyl 2.4L
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Chevrolet HHR SENSOR ASM-KNOCK
Part Number: 12729597
$18.82 MSRP: $35.50
You Save: $16.68 (47%)
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Product Specifications
- Other Name: Camshaft Sensor, Knock Sensor
- Replaces: 12692505, 12605738, 12636736
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2011 Chevrolet HHR | 5 DOOR HIGH ROOF HATCHBACK, 5 DOOR HIGH ROOF HATCHBACK SS, 5 DOOR HIGH ROOF PANEL, 5 DOOR HIGH ROOF PANEL SS, 5 DOOR UPLEVEL HIGH ROOF HATCHBACK, 5 DOOR UPLEVEL HIGH ROOF PANEL | 4 Cyl 2.2L Flex, 4 Cyl 2.4L
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Chevrolet HHR Sensor Assembly, Knock
Part Number: 12567711
$28.27 MSRP: $53.34
You Save: $25.07 (47%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: SENSOR, Distributor (also Knock Sensor); Knock Sensor
- Replaces: 12589373, 24577244, 12615500
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2008 Chevrolet HHR | 5 DOOR HIGH ROOF HATCHBACK, 5 DOOR HIGH ROOF HATCHBACK SS, 5 DOOR HIGH ROOF PANEL, 5 DOOR UPLEVEL HIGH ROOF HATCHBACK, 5 DOOR UPLEVEL HIGH ROOF PANEL | 4 Cyl 2.0L, 4 Cyl 2.2L, 4 Cyl 2.4L

Chevrolet HHR Knock Sensor

The Knock Sensor in Chevrolet HHR vehicles is a vital part which monitors the knock of the engine and transfers the signals to the powertrain control module to manage the ignition timing. This is useful in avoiding over detonation in the ignition cycle, improving the performance and reducing on the likelihood of the engine being damaged. Usually piezoelectric, the knock sensor transforms the pressure variations into electrical signals which are then permanently checked for pressure spikes typically scoring as knock. The engine is then run just on the borderline of the 'knock limit' by slight frequency changes in the ignition with high volatile fuels and even with the small octane values of fuel. It also has the option to change even cylinder timings and control the boost pressure for optimality as well as durability in different settings.

Each OEM Chevrolet HHR Knock Sensor we offer is competitively priced and comes with the assurance of the manufacturer's warranty for the part. Furthermore, we guarantee the speedy delivery of your orders right to your doorstep. Our hassle-free return policy is also in place for your peace of mind.

Chevrolet HHR Knock Sensor Parts Questions & Experts Answers

Sensor,Knock
12621820
Q: How do you remove the knock sensor on the Chevrolet Cobalt,HHR and Saturn ION?
A: To remove the knock sensor, begin by turning off the ignition key and raising the front of the vehicle, securely supporting it on jackstands. If you're removing the front sensor, remove the alternator, and if you're removing the rear sensor, remove the starter motor.