How to replace the Knock Sensor (KS) 1 on Cadillac CTS?

First disconnect the Knock Sensor pigtail from its electrical connector and bracket before removing the generator. Separate the Knock Sensor pigtail from its retaining clips on the rear timing belt cover while maintaining track of how it routes around the cover through several clips. Unscrew the central bolt of the Knock Sensor before removing it from its place inside the engine block. Before installing the engine block Knock Sensor make sure to deeply clean both mounting areas until the entire Knock Sensor base rests perfectly flat on the engine block surface. Follow this sequence to install the Knock Sensor onto the engine block: place it directly on the surface without any added washers then torque the bolt to 20 n.m (15 lb ft). Install the Knock Sensor pigtail into retaining clips while making sure it stays away from moving parts before following the installation process from removal. Reinstall the generator while connecting the Knock Sensor pigtail to its electrical connector and bracket.

How to replace Knock Sensor 2 on Cadillac Escalade?

You must remove the right front wheel and tire before replacing Knock Sensor 2. Work through the wheel well opening by disconnecting the engine wiring harness electrical connector from the knock sensor. Proceed by removing bolt 739 and sensor 718. Position the knock sensor (718) onto the engine block before installing the knock sensor bolt (739) with a torque of 25 N.m (18 lb ft). As the last step, restore the right front wheel and tire while reconnecting the engine wiring harness electrical connector to the knock sensor.

How to replace the Knock Sensor (KS) 2 on Cadillac XLR?

Begin replacement of the Knock Sensor (KS) 2 by removing the Intake Manifold first. Separate the electrical connector that connects to the Knock Sensor (KS) before removing the bolt located at the sensor's center. Extract the ks unit from its position inside the engine block. The ks mating surfaces require clean-up for the total surface to receive direct engine block contact. Before final installation of the ks and bolt to the engine block users must skip using any washers or spring washers or toothed washers. Fasten the bolt to a torque specification of 20 n.m (15 lb ft). Check that the wiring harness receives proper installation because there are multiple retaining clips maintaining its position. Continuation of the procedure requires connecting the electrical connector to the ks followed by Intake Manifold reinstallation.

OEM Cadillac Knock Sensor

Engine Knock Sensor

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20 Knock Sensors found

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Cadillac Knock Sensor
Part Number: 10456126
$38.70 MSRP: $78.60
You Save: $39.90 (51%)
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Product Specifications
- Other Name: Sensor Assembly-Electric Spark Control Knock; Control Module; Sensor, Distributor (Also Knock Sensor)
Fits the following Cadillac Models:
- Fleetwood | 1994 | Base, Brougham | 8 Cyl 5.7 L GAS
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Cadillac 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
Fits the following Cadillac Models:
- CTS | 2009-2015, 2006-2007 | V | 8 Cyl 6.0 L GAS, 8 Cyl 6.2 L GAS
- DTS | 2007-2011 | Base, Livery, Luxury, Platinum, Premium | 8 Cyl 4.6 L GAS
- Escalade | 2007-2014 | Base, Hybrid, Hybrid Platinum, Luxury, Platinum, Premium | 8 Cyl 6.0 L FULL HYBRID EV-FLEX (FHEV), 8 Cyl 6.0 L FULL HYBRID EV-GAS (FHEV), 8 Cyl 6.2 L FLEX, 8 Cyl 6.2 L GAS
- Escalade EXT | 2007-2013 | Base, Luxury, Premium | 8 Cyl 6.2 L FLEX, 8 Cyl 6.2 L GAS
- SRX | 2007-2009 | Base | 8 Cyl 4.6 L GAS
- STS | 2006-2010 | Base, Platinum, V | 8 Cyl 4.4 L GAS, 8 Cyl 4.6 L GAS
- XLR | 2006-2009 | Base, Platinum, V | 8 Cyl 4.4 L GAS, 8 Cyl 4.6 L GAS
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Cadillac Knock Sensor
Part Number: 12618603
$37.07 MSRP: $69.61
You Save: $32.54 (47%)
Ships in 1 Business Day
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Product Specifications
- Other Name: Sensor, Distributor (Also Knock Sensor); Ignition Knock (Detonation) Sensor
- Replaces: 12566845
Fits the following Cadillac Models:
- CTS | 2004-2008 | Base | 6 Cyl 2.8 L GAS, 6 Cyl 3.6 L GAS
- SRX | 2004-2008 | Base | 6 Cyl 3.6 L GAS
- STS | 2005-2008 | Base, Platinum | 6 Cyl 3.6 L GAS
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Cadillac Knock Sensor
Part Number: 12567446
$26.64 MSRP: $50.00
You Save: $23.36 (47%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor, Distributor (Also Knock Sensor)
- Replaced by: 19434672
Fits the following Cadillac Models:
- DTS | 2006 | Base | 8 Cyl 4.6 L GAS
- DeVille | 2003-2005 | Base, DHS, DTS, Protection Series | 8 Cyl 4.6 L GAS
- SRX | 2004-2006 | Base | 8 Cyl 4.6 L GAS
- STS | 2005-2007 | Base | 8 Cyl 4.6 L GAS
- Seville | 2003-2004 | SLS, STS | 8 Cyl 4.6 L GAS
- XLR | 2004-2006 | Base | 8 Cyl 4.6 L GAS
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Cadillac Knock Sensor
Part Number: 25201064
$21.73 MSRP: $40.80
You Save: $19.07 (47%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor, Distributor (Also Knock Sensor)
- Replaces: 55563372
Fits the following Cadillac Models:
- ELR | 2014-2016 | Base | 4 Cyl 1.4 L PLUG-IN HYBRID EV-GAS (PHEV)
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Cadillac Knock Sensor
Part Number: 21024981
$31.97 MSRP: $60.05
You Save: $28.08 (47%)
Ships in 1 Business Day
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Product Specifications
- Other Name: Sensor, Distributor (Also Knock Sensor)
- Replaced by: 19434673
- Replaces: 21024729
Fits the following Cadillac Models:
- DeVille | 2000-2002 | Base, DHS, DTS | 8 Cyl 4.6 L GAS
- Eldorado | 2000-2002 | ESC, ETC | 8 Cyl 4.6 L GAS
- Seville | 2000-2002 | SLS, STS | 8 Cyl 4.6 L GAS
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Cadillac Knock Sensor
Part Number: 12623095
$22.97 MSRP: $43.16
You Save: $20.19 (47%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Sensor, Distributor (Also Knock Sensor)
Fits the following Cadillac Models:
- ATS | 2013-2019 | Base, Luxury, Performance, Premium | 4 Cyl 2.0 L GAS, 4 Cyl 2.5 L GAS
- CT5 | 2022-2024 | V Blackwing | 8 Cyl 6.2 L GAS
- CT6 | 2016-2018 | Base, Luxury, Plug-In | 4 Cyl 2.0 L GAS, 4 Cyl 2.0 L PLUG-IN HYBRID EV-GAS (PHEV)
- CTS | 2014-2019 | Base, Luxury, Performance, Premium, V | 4 Cyl 2.0 L GAS, 8 Cyl 6.2 L GAS
- Escalade | 2015-2023 | Base, Luxury, Platinum, Premium, Premium Luxury, Premium Luxury Platinum, Sport, Sport Platinum, V | 8 Cyl 6.2 L FLEX, 8 Cyl 6.2 L GAS
- Escalade ESV | 2015-2023 | Base, Luxury, Platinum, Premium, Premium Luxury, Premium Luxury Platinum, Sport, Sport Platinum, V | 8 Cyl 6.2 L FLEX, 8 Cyl 6.2 L GAS
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Cadillac Knock Sensor
Part Number: 12589867
$64.53 MSRP: $131.06
You Save: $66.53 (51%)
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Product Specifications
- Other Name: Sensor, Distributor (Also Knock Sensor)
- Replaces: 10456603
Fits the following Cadillac Models:
- CTS | 2004-2005 | V | 8 Cyl 5.7 L GAS
- Escalade | 2002-2006 | Base | 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
- Escalade ESV | 2003-2006 | Base | 8 Cyl 6.0 L GAS
- Escalade EXT | 2002-2006 | Base | 8 Cyl 6.0 L GAS
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Cadillac Knock Sensor
Part Number: 10456549
$37.66 MSRP: $117.47
You Save: $79.81 (68%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor, Distributor (Also Knock Sensor); ESC Sensor
- Replaces: 10456031
Fits the following Cadillac Models:
- Fleetwood | 1993 | Base, Brougham | 8 Cyl 5.7 L GAS
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Cadillac Knock Sensor
Part Number: 10456288
$47.03 MSRP: $95.53
You Save: $48.50 (51%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor, Distributor (Also Knock Sensor); ESC Sensor; Sensor, Engine Crankcase Ventilator
- Replaces: 10456018
Fits the following Cadillac Models:
- Escalade | 1999-2000 | Base | 8 Cyl 5.7 L GAS
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Cadillac Knock Sensor
Part Number: 55503494
$14.50 MSRP: $25.88
You Save: $11.38 (44%)
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Product Specifications
- Other Name: Sensor, Distributor (Also Knock Sensor)
- Replaced by: 12737536
Fits the following Cadillac Models:
- CT4 | 2020-2024 | Luxury, Premium Luxury, Sport | 4 Cyl 2.0 L GAS
- CT5 | 2020-2024 | Luxury, Premium Luxury, Sport | 4 Cyl 2.0 L GAS
- CT6 | 2019 | Luxury, Premium Luxury | 4 Cyl 2.0 L GAS
- XT4 | 2019-2024 | Luxury, Premium Luxury, Sport | 4 Cyl 2.0 L GAS
- XT5 | 2020-2023 | Luxury, Premium Luxury | 4 Cyl 2.0 L GAS
- XT6 | 2021-2024 | Luxury | 4 Cyl 2.0 L GAS
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Cadillac Knock Sensor
Part Number: 55494828
$14.84 MSRP: $26.50
You Save: $11.66 (44%)
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Product Specifications
- Other Name: Sensor, Distributor (Also Knock Sensor)
- Replaced by: 12737721
Fits the following Cadillac Models:
- CT6 | 2019-2020 | Platinum, V | 8 Cyl 4.2 L GAS
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Cadillac Knock Sensor
Part Number: 12663209
$4.19 MSRP: $7.57
You Save: $3.38 (45%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor, Distributor (Also Knock Sensor)
Fits the following Cadillac Models:
- CT4 | 2020-2024 | Luxury, Premium Luxury, Sport, V | 4 Cyl 2.0 L GAS, 4 Cyl 2.7 L GAS
- CT5 | 2020-2022 | Luxury, Premium Luxury, Sport | 4 Cyl 2.0 L GAS
- CT6 | 2019 | Luxury, Premium Luxury | 4 Cyl 2.0 L GAS
- XT4 | 2019-2024 | Luxury, Premium Luxury, Sport | 4 Cyl 2.0 L GAS
- XT5 | 2020-2023 | Livery, Luxury, Premium Luxury | 4 Cyl 2.0 L GAS
- XT6 | 2021-2024 | Luxury | 4 Cyl 2.0 L GAS
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Cadillac Knock Sensor
Part Number: 12729597
$19.41 MSRP: $36.46
You Save: $17.05 (47%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor, Distributor (Also Knock Sensor); Camshaft Sensor
- Replaces: 12692505, 12605738, 12636736
Fits the following Cadillac Models:
- ATS | 2013-2019 | Luxury, Performance, Premium, Premium Luxury, Premium Performance, V | 6 Cyl 3.6 L FLEX, 6 Cyl 3.6 L GAS
- CT4 | 2022-2024 | V Blackwing | 6 Cyl 3.6 L GAS
- CT5 | 2020-2024 | Premium Luxury, V | 6 Cyl 3.0 L GAS
- CT6 | 2016-2020 | Base, Luxury, Platinum, Premium Luxury, Sport | 6 Cyl 3.0 L GAS, 6 Cyl 3.6 L GAS
- CTS | 2009-2019 | Base, Luxury, Performance, Premium, Premium Luxury, V, Vsport, Vsport Premium, Vsport Premium Luxury | 6 Cyl 3.0 L GAS, 6 Cyl 3.6 L FLEX, 6 Cyl 3.6 L GAS, 8 Cyl 6.2 L GAS
- SRX | 2009-2016 | Base, Luxury, Performance, Premium | 6 Cyl 2.8 L GAS, 6 Cyl 3.0 L GAS, 6 Cyl 3.6 L FLEX, 6 Cyl 3.6 L GAS
- STS | 2009-2011 | Base, Platinum | 6 Cyl 3.6 L GAS
- XT5 | 2017-2023 | Base, Luxury, Platinum, Premium Luxury, Sport | 6 Cyl 3.6 L GAS
- XT6 | 2020-2024 | Premium Luxury, Sport | 6 Cyl 3.6 L GAS
- XTS | 2013-2019 | Base, Livery, Luxury, Platinum, Premium, Premium Luxury, Vsport Platinum, Vsport Premium, Vsport Premium Luxury | 6 Cyl 3.6 L GAS
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Cadillac Knock Sensor
Part Number: 10456287
Product Specifications
- Other Name: Sensor, Distributor (Also Knock Sensor); Control Module; ESC Sensor; Sensor
- Replaces: 10456017
Fits the following Cadillac Models:
- Brougham | 1992 | Base, d'Elegance | 8 Cyl 5.0 L GAS
- Fleetwood | 1995-1996 | Base, Brougham | 8 Cyl 5.7 L GAS
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Cadillac Knock Sensor
Part Number: 10456019
Product Specifications
- Other Name: Sensor, Distributor (Also Knock Sensor)
Fits the following Cadillac Models:
- 60 Special | 1993 | Base | 8 Cyl 4.9 L GAS
- DeVille | 1992-1993 | Base, Touring | 8 Cyl 4.9 L GAS
- Fleetwood | 1992 | 60 Special, Base, d'Elegance | 8 Cyl 4.9 L GAS
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Cadillac Knock Sensor
Part Number: 90541521
Product Specifications
- Other Name: Sensor, Distributor (Also Knock Sensor); Ignition Knock (Detonation) Sensor
Fits the following Cadillac Models:
- Catera | 1997-2001 | Base, Sport | 6 Cyl 3.0 L GAS
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Cadillac Knock Sensor
Part Number: 10456222
Product Specifications
- Other Name: Sensor, Distributor (Also Knock Sensor)
Fits the following Cadillac Models:
- DeVille | 1996-1999 | Base, Concours, d'Elegance | 8 Cyl 4.6 L GAS
- Eldorado | 1996-1999 | Base, ESC, ETC | 8 Cyl 4.6 L GAS
- Seville | 1996-1999 | SLS, STS | 8 Cyl 4.6 L GAS
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Cadillac Knock Sensor
Part Number: 90530434
Product Specifications
- Other Name: Sensor, Distributor (Also Knock Sensor)
Fits the following Cadillac Models:
- CTS | 2003-2004 | Base, Luxury, Luxury Sport | 6 Cyl 3.2 L GAS
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Cadillac Knock Sensor
Part Number: 10456208
$62.55 MSRP: $111.70
You Save: $49.15 (44%)
Product Specifications
- Other Name: Sensor, Distributor (Also Knock Sensor)
Fits the following Cadillac Models:
- Allante | 1993 | Base, Indianapolis 500 Pace Car, Value Leader | 8 Cyl 4.6 L GAS
- DeVille | 1994-1995 | Concours | 8 Cyl 4.6 L GAS
- Eldorado | 1993-1995 | Base, ETC, Sport, Touring | 8 Cyl 4.6 L GAS
- Seville | 1993-1995 | SLS, STS | 8 Cyl 4.6 L GAS
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Cadillac Knock Sensor Parts Questions & Experts Answers

Knock Sensor
90530434
Q: How to replace the Knock Sensor (KS) 1 on Cadillac CTS?
A: First disconnect the Knock Sensor pigtail from its electrical connector and bracket before removing the generator. Separate the Knock Sensor pigtail from its retaining clips on the rear timing belt cover while maintaining track of how it routes around the cover through several clips. Unscrew the central bolt of the Knock Sensor before removing it from its place inside the engine block. Before installing the engine block Knock Sensor make sure to deeply clean both mounting areas until the entire Knock Sensor base rests perfectly flat on the engine block surface. Follow this sequence to install the Knock Sensor onto the engine block: place it directly on the surface without any added washers then torque the bolt to 20 n.m (15 lb ft). Install the Knock Sensor pigtail into retaining clips while making sure it stays away from moving parts before following the installation process from removal. Reinstall the generator while connecting the Knock Sensor pigtail to its electrical connector and bracket.
Knock Sensor
12623730
Q: How to replace Knock Sensor 2 on Cadillac Escalade?
A: You must remove the right front wheel and tire before replacing Knock Sensor 2. Work through the wheel well opening by disconnecting the engine wiring harness electrical connector from the knock sensor. Proceed by removing bolt 739 and sensor 718. Position the knock sensor (718) onto the engine block before installing the knock sensor bolt (739) with a torque of 25 N.m (18 lb ft). As the last step, restore the right front wheel and tire while reconnecting the engine wiring harness electrical connector to the knock sensor.
Knock Sensor
12567446
Q: How to replace the Knock Sensor (KS) 2 on Cadillac XLR?
A: Begin replacement of the Knock Sensor (KS) 2 by removing the Intake Manifold first. Separate the electrical connector that connects to the Knock Sensor (KS) before removing the bolt located at the sensor's center. Extract the ks unit from its position inside the engine block. The ks mating surfaces require clean-up for the total surface to receive direct engine block contact. Before final installation of the ks and bolt to the engine block users must skip using any washers or spring washers or toothed washers. Fasten the bolt to a torque specification of 20 n.m (15 lb ft). Check that the wiring harness receives proper installation because there are multiple retaining clips maintaining its position. Continuation of the procedure requires connecting the electrical connector to the ks followed by Intake Manifold reinstallation.