How to replace the Knock Sensor (KS) 2 on Chevrolet Impala?

Before replacing the Knock Sensor (KS) 2, first lift and suspend up the vehicle. Drain the cooling system to avoid scalds from the hot engine coolant that may still be in the engine water jacket. Remove the two bolts from the knock sensor heat shield, then the release the electrical connector from the knock sensor and remove the sensor itself. To install, do not apply thread sealant to the sensor as it is factory precoated and extra sealant can degrade detonation detection capabilities. Replace the new knock sensor and torque it down to 19 N.m (14 lb ft). Replace the heat shield and fasten the bolts with the wrench to 60 N.m (44 lb ft) and reconnect the electrical connector. Lastly, drop the vehicle and top up the cooling system.

OEM Chevrolet Impala Knock Sensor

Engine Knock Sensor

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7 Knock Sensors found

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Chevrolet Impala Knock Sensor Part Number: 10456126
$39.48 MSRP: $80.18
You Save: $40.70 (51%)
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Product Specifications
- Other Name: Sensor Assembly-Electric Spark Control Knock; Control Module; Sensor, Distributor (Also Knock Sensor)
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1994-1995 Chevrolet Impala | SS | 8 Cyl 5.7 L GAS
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Chevrolet Impala 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:
- 2006-2011 Chevrolet Impala | 50th Anniversary Edition, LS, LT, LTZ, Police, SS | 6 Cyl 3.5 L FLEX, 6 Cyl 3.5 L GAS, 6 Cyl 3.9 L FLEX, 6 Cyl 3.9 L GAS, 8 Cyl 5.3 L GAS
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Chevrolet Impala 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:
- 2014-2019 Chevrolet Impala | LS, LT, LTZ | 4 Cyl 2.5 L FLEX, 4 Cyl 2.5 L GAS
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Chevrolet Impala Knock Sensor Part Number: 12591625
$67.91 MSRP: $137.92
You Save: $70.01 (51%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor, Distributor (Also Knock Sensor)
- Replaces: 10456215
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2000-2005 Chevrolet Impala | Base, LS, LS Sport, Police, SS | 6 Cyl 3.8 L GAS
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Chevrolet Impala Knock Sensor Part Number: 12729597
$19.80 MSRP: $37.18
You Save: $17.38 (47%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor, Distributor (Also Knock Sensor); Camshaft Sensor
- Replaces: 12692505, 12605738, 12636736
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2012-2020 Chevrolet Impala | Eco, LS, LT, LTZ, Police, Premier | 4 Cyl 2.4 L MILD HYBRID EV-GAS (MHEV), 6 Cyl 3.6 L BI-FUEL, 6 Cyl 3.6 L FLEX, 6 Cyl 3.6 L GAS
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Chevrolet Impala Knock Sensor Part Number: 10456287
Product Specifications
- Other Name: Sensor, Distributor (Also Knock Sensor); Control Module; ESC Sensor; Sensor
- Replaces: 10456017
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1996 Chevrolet Impala | SS | 8 Cyl 5.7 L GAS
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Chevrolet Impala Knock Sensor Part Number: 10456238
Product Specifications
- Other Name: Sensor, Distributor (Also Knock Sensor)
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2000-2005 Chevrolet Impala | Base | 6 Cyl 3.4 L GAS

Chevrolet Impala Knock Sensor

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Knock Sensor in Chevrolet Impala automobiles is a vital part that measures engine knock and communicates this to the PCM so that right timing modifications can be made. Generally piezoelectric the sensor transforms mechanically induced pressure waves that represent knock into electric signals. This makes it enable the right timing adjust to enhance the performance and avoiding the destruction of the engine even when in use with low octane fuels. Sophisticated management can manage the period for any nozzle or cylinder and even the boost pressure to optimise the engine's performance under various conditions while at the same time increasing its durability. Knock sensors mounted on the Chevrolet Impala models serve as significant components that help keep the engine as well protected from destructive detonation.

Chevrolet Impala Knock Sensor Parts Questions & Experts Answers

Knock Sensor
12591625
Q: How to replace the Knock Sensor (KS) 2 on Chevrolet Impala?
A:
Before replacing the Knock Sensor (KS) 2, first lift and suspend up the vehicle. Drain the cooling system to avoid scalds from the hot engine coolant that may still be in the engine water jacket. Remove the two bolts from the knock sensor heat shield, then the release the electrical connector from the knock sensor and remove the sensor itself. To install, do not apply thread sealant to the sensor as it is factory precoated and extra sealant can degrade detonation detection capabilities. Replace the new knock sensor and torque it down to 19 N.m (14 lb ft). Replace the heat shield and fasten the bolts with the wrench to 60 N.m (44 lb ft) and reconnect the electrical connector. Lastly, drop the vehicle and top up the cooling system.