How to remove a knock sensor on GMC Sierra?

To remove the knock sensor on a vehicle, loosen the front wheel lug nuts and raise the front of the vehicle on jack stands. Remove the wheel and the knock sensor heat shield retaining bolt. Disconnect the electrical connector and remove the retaining bolt to take out the knock sensor. The installation is the reverse of the removal steps.

Genuine GMC Sierra Knock Sensor

Engine Knock Sensor

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10 Knock Sensors found

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GMC Sierra Knock Sensor
Part Number: 12589867
$62.26 MSRP: $127.00
You Save: $64.74 (51%)
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Product Specifications
- Other Name: SENSOR, Distributor (also Knock Sensor); Knock Sensor
- Replaces: 10456603
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1999-2007 GMC Sierra | 1500 CREW CAB LONG BOX, 1500 CREW CAB STANDARD BOX, 1500 EXTENDED CAB LONG BOX, 1500 EXTENDED CAB SHORT BOX, 1500 EXTENDED CAB STANDARD BOX, 1500 REGULAR CAB LONG BOX, 1500 REGULAR CAB STANDARD BOX, 2500 CREW CAB LONG BOX, 2500 CREW CAB STANDARD BOX, 2500 EXTENDED CAB LONG BOX, 2500 EXTENDED CAB STANDARD BOX, 2500 REGULAR CAB, 3500 CHASSIS EXTENDED CAB 161.5, 3500 CHASSIS EXTENDED CAB 185.5, 3500 CHASSIS REGULAR CAB 137.0, 3500 CHASSIS REGULAR CAB 161.5, 3500 CREW CAB, 3500 EXTENDED CAB, 3500 REGULAR CAB, CLASSIC 1500 CREW CAB LONG BOX, CLASSIC 1500 CREW CAB STANDARD BOX, CLASSIC 1500 EXTENDED CAB LONG BOX, CLASSIC 1500 EXTENDED CAB SHORT BOX, CLASSIC 1500 EXTENDED CAB STANDARD BOX, CLASSIC 1500 REGULAR CAB LONG BOX, CLASSIC 1500 REGULAR CAB STANDARD BOX, CLASSIC 2500 CREW CAB LONG BOX, CLASSIC 2500 CREW CAB STANDARD BOX, CLASSIC 2500 EXTENDED CAB LONG BOX, CLASSIC 2500 EXTENDED CAB STANDARD BOX, CLASSIC 2500 REGULAR CAB, CLASSIC 3500 CHASSIS EXTENDED CAB 161.5, CLASSIC 3500 CHASSIS REGULAR CAB 137.0, CLASSIC 3500 CHASSIS REGULAR CAB 161.5, CLASSIC 3500 CREW CAB, CLASSIC 3500 EXTENDED CAB, CLASSIC 3500 REGULAR CAB | 8 Cyl 4.8L, 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L
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GMC Sierra Knock Sensor
Part Number: 10456288
$45.37 MSRP: $92.57
You Save: $47.20 (51%)
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Product Specifications
- Other Name: SENSOR, Distributor (also Knock Sensor); ESC Sensor, Knock Sensor
- Replaces: 10456018
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2007 GMC Sierra | 3500 CHASSIS REGULAR CAB 137.0, CLASSIC 3500 CHASSIS REGULAR CAB 137.0
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GMC Sierra Knock Sensor Assembly
Part Number: 12623730
$13.77 MSRP: $25.98
You Save: $12.21 (47%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: SENSOR, Distributor (also Knock Sensor); Knock Sensor
- Replaced by: 12739206
- Replaces: 12570125
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007-2019 GMC Sierra | 1 TON CREW CAB, 2500 CREW CAB STANDARD BOX, 2500 REGULAR CAB, 2500 REGULAR CAB STANDARD BOX, 3500 CREW CAB LONG BOX, 3500 CREW CAB ONLY, 3500 CREW CAB STANDARD BOX, 3500 DOUBLE CAB LONG BOX, 3500 REGULAR CAB, CREW CAB 1 TON, CREW CAB 1 TON 119.0, CREW CAB 1 TON 137.0, CREW CAB 1/2 TON, CREW CAB 2500 LONG BOX, CREW CAB 6'6" BOX 3/4 TON, CREW CAB 8' BOX 3/4 TON, DOUBLE CAB 2500 LONG BOX, DOUBLE CAB 2500 STANDARD BOX, EXTENDED CAB 1 TON, EXTENDED CAB 5'8" BOX 1/2 TON, EXTENDED CAB 6'6" BOX 1/2 TON, EXTENDED CAB 6'6" BOX 3/4 TON, EXTENDED CAB 8' BOX 1/2 TON, EXTENDED CAB 8' BOX 3/4 TON, EXTENDED CAB CHASSIS 1 TON 161.5, EXTENDED CREW CAB 1 TON 161.5, REGULAR CAB 1 TON, REGULAR CAB 3/4 TON, REGULAR CAB 6'6" BOX 1/2 TON, REGULAR CAB 8' BOX 1/2 TON, REGULAR CAB CHASSIS 1 TON 137.0, REGULAR CAB CHASSIS 1 TON 161.5 | 8 Cyl 4.8L, 8 Cyl 4.8L Flex, 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L, 8 Cyl 6.0L Flex, 8 Cyl 6.2L, 8 Cyl 6.2L Flex
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GMC Sierra Knock Sensor Assembly
Part Number: 12623095
$23.83 MSRP: $44.96
You Save: $21.13 (47%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: SENSOR, Distributor (also Knock Sensor); Knock Sensor
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2014-2024 GMC Sierra | 1500 CREW CAB, 1500 CREW CAB STANDARD BOX, 1500 DOUBLE CAB STANDARD BOX, 1500 REGULAR CAB LONG BOX, 1500 REGULAR CAB STANDARD BOX, CREW CAB 1 TON CHASSIS 137.0, CREW CAB 1/2 TON, CREW CAB 5'8" 1/2 TON, CREW CAB 5'8" BOX 1/2 TON, CREW CAB 6'6" BOX 1 TON, Crew Cab 6'6" Box 1/2 Ton, CREW CAB 6'6" BOX 1/2 TON, CREW CAB 6'6" BOX 3/4 TON, CREW CAB 8' BOX 1 TON, CREW CAB 8' BOX 3/4 TON, EXTENDED CAB 6'6" BOX 1/2 TON, EXTENDED CAB 6'6" BOX 3/4 TON, EXTENDED CAB 8' BOX 1 TON, EXTENDED CAB 8' BOX 1/2 TON, EXTENDED CAB 8' BOX 3/4 TON, EXTENDED CREW CAB 1 TON CHASSIS 161.5, REGULAR CAB 1 TON CHASSIS 137.0, REGULAR CAB 1 TON CHASSIS 161.5, REGULAR CAB 6'6" BOX 1/2 TON, REGULAR CAB 8' BOX 1 TON, REGULAR CAB 8' BOX 1/2 TON, REGULAR CAB 8' BOX 3/4 TON | 6 Cyl 4.3L, 8 Cyl 5.3L, 8 Cyl 6.2L, 8 Cyl 6.6L, 8 Cyl5.3L
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GMC Sierra Knock Sensor Assembly
Part Number: 21024981
$32.46 MSRP: $61.25
You Save: $28.79 (47%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Other Name: SENSOR, Distributor (also Knock Sensor); Knock Sensor
- Replaced by: 19434673
- Replaces: 21024729
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2001-2004 GMC Sierra | 1500 EXTENDED CAB LONG BOX, 1500 EXTENDED CAB STANDARD BOX, 1500 REGULAR CAB LONG BOX, 1500 REGULAR CAB STANDARD BOX | 6 Cyl 4.3L
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GMC Sierra Knock Sensor Assembly
Part Number: 12600327
$14.09 MSRP: $26.57
You Save: $12.48 (47%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Other Name: SENSOR, Distributor (also Knock Sensor); Knock Sensor
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007-2013 GMC Sierra | EXTENDED CAB 5'8" BOX 1/2 TON, EXTENDED CAB 6'6" BOX 1/2 TON, EXTENDED CAB 8' BOX 1/2 TON, REGULAR CAB 6'6" BOX 1/2 TON, REGULAR CAB 8' BOX 1/2 TON | 6 Cyl 4.3L
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GMC Sierra Knock Sensor Assembly
Part Number: 12663209
$4.24 MSRP: $8.00
You Save: $3.76 (47%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor Assembly, Knock; Knock Sensor
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2019-2024 GMC Sierra | CREW CAB 5'8" 1/2 TON, CREW CAB 5'8" BOX 1/2 TON, Crew Cab 6'6" Box 1/2 Ton, CREW CAB 6'6" BOX 1/2 TON, EXTENDED CAB 6'6" BOX 1/2 TON, EXTENDED CAB 8' BOX 1/2 TON, REGULAR CAB 6'6" BOX 1/2 TON, REGULAR CAB 8' BOX 1/2 TON | 4 Cyl 2.7L
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GMC Sierra Knock Sensor Assembly
Part Number: 12591312
Product Specifications
- Other Name: SENSOR, Distributor (also Knock Sensor); Knock Sensor
- Replaces: 10456500
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2001-2007 GMC Sierra | 2500 CREW CAB LONG BOX, 2500 CREW CAB STANDARD BOX, 2500 EXTENDED CAB LONG BOX, 2500 EXTENDED CAB STANDARD BOX, 2500 REGULAR CAB, 3500 CHASSIS EXTENDED CAB 161.5, 3500 CHASSIS EXTENDED CAB 185.5, 3500 CHASSIS REGULAR CAB 137.0, 3500 CHASSIS REGULAR CAB 161.5, 3500 CREW CAB, 3500 EXTENDED CAB, 3500 REGULAR CAB, CLASSIC 2500 CREW CAB LONG BOX, CLASSIC 2500 CREW CAB STANDARD BOX, CLASSIC 2500 EXTENDED CAB LONG BOX, CLASSIC 2500 EXTENDED CAB STANDARD BOX, CLASSIC 2500 REGULAR CAB, CLASSIC 3500 CHASSIS EXTENDED CAB 161.5, CLASSIC 3500 CHASSIS REGULAR CAB 137.0, CLASSIC 3500 CHASSIS REGULAR CAB 161.5, CLASSIC 3500 CREW CAB, CLASSIC 3500 EXTENDED CAB, CLASSIC 3500 REGULAR CAB | 8 Cyl 8.1L
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GMC Sierra Knock Sensor Assembly
Part Number: 12590195
$23.64 MSRP: $42.39
You Save: $18.75 (45%)
Product Specifications
- Other Name: SENSOR, Distributor (also Knock Sensor); Knock Sensor
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2007 GMC Sierra | 1500 EXTENDED CAB LONG BOX, 1500 EXTENDED CAB SHORT BOX, 1500 EXTENDED CAB STANDARD BOX, 1500 REGULAR CAB LONG BOX, 1500 REGULAR CAB STANDARD BOX, CLASSIC 1500 EXTENDED CAB LONG BOX, CLASSIC 1500 EXTENDED CAB SHORT BOX, CLASSIC 1500 EXTENDED CAB STANDARD BOX, CLASSIC 1500 REGULAR CAB LONG BOX, CLASSIC 1500 REGULAR CAB STANDARD BOX | 6 Cyl 4.3L
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GMC Sierra Knock Sensor
Part Number: 10456075
Product Specifications
- Other Name: SENSOR, Distributor (also Knock Sensor); Knock Sensor
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1999-2000 GMC Sierra | 1500 EXTENDED CAB LONG BOX, 1500 EXTENDED CAB STANDARD BOX, 1500 REGULAR CAB LONG BOX, 1500 REGULAR CAB STANDARD BOX | 6 Cyl 4.3L

GMC Sierra Knock Sensor

The Knock Sensor for GMC Sierra safeguards the truck's engine by immediately alerting the powertrain control module when combustion knock begins. This allows the computer to make instant timing adjustments, boosting performance and protecting engine parts. The Knock Sensor is a piezoelectric microphone bolted into the block that changes the vibration bursts of detonation into an electrical signal the computer can read, so spark timing gets pulled back just enough to stop the ping and then slowly advanced again for maximum power. GMC pickups in the early 1990s typically featured a single rear-block unit listening to all cylinders. Sierra motors adopted a dual Knock Sensor layout or paired units per bank. This reduced reaction time and allowed the module to tweak each side of the V8 separately. Since the Knock Sensor reacts instantaneously, the control loop can maintain the engine right at the knock limit even with lower octane fuel, hot weather, or high altitude to preserve torque, fuel economy, and longevity. A faulty Knock Sensor can cause false silence or constant alarming, which will cause the computer to remain stuck in retarded timing, making any GMC Sierra feel sluggish.

Each OEM GMC Sierra 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.

GMC Sierra Knock Sensor Parts Questions & Experts Answers

Knock Sensor
12589867
Q: How to remove a knock sensor on GMC Sierra?
A:
To remove the knock sensor on a vehicle, loosen the front wheel lug nuts and raise the front of the vehicle on jack stands. Remove the wheel and the knock sensor heat shield retaining bolt. Disconnect the electrical connector and remove the retaining bolt to take out the knock sensor. The installation is the reverse of the removal steps.