How to remove and install knock sensors on Chevrolet Express?

Take off the cable from the battery's negative terminal. The 4.3L V6 engine knock sensor is located on the back part of the engine block, to the left of the distributor. A threaded unit is screwed into a block for the knock sensor found in 1996 through 2000 models. On 2001 and later models, however, there is a knock sensor yet it is located at this point but bolted to a block. Eliminate an engine cover.Disconnect an electric contactor from a knocking sensor. Removing the shock absorber from the socket.Eliminate an electric socket by carefully screwing out its plug.Remove it with simply unscrewing it.Such are on 2018 and beyond versions of 4.3L V6 engines that have two detonation sensors positioned under each distal part of exhaust.Central bolt can be removed to take away those detectors out.First you should remove fasteners or nuts while turning them counterclockwise.Installation basically involves following removal procedures.Be carful when fixing torque either for tightening knock sensor or mounting bolt, otherwise, tightening will result in bad outcomes.For all these three engines (5.0L, 5.7L and 7.4L), their right side before starting motor has got one device meant for detecting early emissions of abnormal sounds.Prior to any checks after repair work, lift car front so as to put jacks below front wheels.Turn off an electrical connector through which a knocking sensor communicates.Untwist and get rid of a shock absorber.It comes down to reversing disassembling procedure in order to install it.The only thing needed now is tightness of this component.Either way it should be done correctly only once fitted instead.In such situations never employ any sealing substance plus thread resistant material onto knocking detector or its attaching means.This kind of adjustment causes poor work rate either by tightening more than that or lesser than the needed level of a knocking sensor.

Genuine Chevrolet Express Knock Sensor

Engine Knock Sensor

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11 Knock Sensors found

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Chevrolet Express Knock Sensor
Part Number: 12589867
$62.26 MSRP: $127.00
You Save: $64.74 (51%)
ADD TO CART
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:
- 2003-2007 Chevrolet Express | 1 TON CARGO EXPRESS, 1 TON COMMERCIAL/RV CUTAWAY, 1 TON PASSENGER, 1/2 TON CARGO EXPRESS, 1/2 TON PASSENGER EXPRESS, 3/4 TON CARGO EXPRESS, 3/4 TON PASSENGER EXPRESS | 8 Cyl 4.8L, 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L
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Chevrolet Express Knock Sensor
Part Number: 10456288
$45.37 MSRP: $92.57
You Save: $47.20 (51%)
Ships in 1-2 Business Days
ADD TO CART
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:
- 1996-2002 Chevrolet Express | 1 TON CARGO EXPRESS, 1 TON COMMERCIAL/RECREATIONAL VEHICLE EXPRESS, 1 TON PASSENGER, 1/2 TON CARGO EXPRESS, 1/2 TON PASSENGER EXPRESS, 3/4 TON CARGO EXPRESS, 3/4 TON PASSENGER EXPRESS | 8 Cyl 5.7L
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Chevrolet Express Knock Sensor Assembly
Part Number: 12623730
$13.77 MSRP: $25.98
You Save: $12.21 (47%)
Ships in 1-2 Business Days
ADD TO CART
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:
- 2008-2020 Chevrolet Express | 1 TON CARGO EXPRESS, 1 TON CARGO SAVANA, 1 TON COMMERCIAL/RV CUTAWAY, 1 TON PASSENGER, 1/2 TON CARGO EXPRESS, 1/2 TON CARGO SAVANA, 1/2 TON PASSENGER EXPRESS, 1/2 TON PASSENGER SAVANA, 3/4 TON CARGO EXPRESS, 3/4 TON CARGO SAVANA, 3/4 TON PASSENGER EXPRESS, 3/4 TON PASSENGER SAVANA | 8 Cyl 4.8L Flex, 8 Cyl 5.3L, 8 Cyl 6.0L, 8 Cyl 6.0L Flex
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Chevrolet Express Knock Sensor Assembly
Part Number: 12623095
$23.43 MSRP: $44.20
You Save: $20.77 (47%)
Ships in 1-3 Business Days
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:
- 2018-2024 Chevrolet Express | 1 TON CARGO EXPRESS, 1 TON COMMERCIAL/RV CUTAWAY, 1 TON PASSENGER, 3/4 TON CARGO EXPRESS, 3/4 TON PASSENGER EXPRESS, Van 3/4 Ton Cargo Express | 6 Cyl 4.3L, 8 Cyl 6.6L
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Chevrolet Express 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:
- 2001-2005 Chevrolet Express | 1 TON CARGO EXPRESS, 1 TON COMMERCIAL/RECREATIONAL VEHICLE EXPRESS, 1 TON PASSENGER, 1/2 TON CARGO EXPRESS, 1/2 TON PASSENGER EXPRESS, 3/4 TON CARGO EXPRESS, 3/4 TON PASSENGER EXPRESS | 6 Cyl 4.3L
View related parts
Chevrolet Express 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:
- 2008-2014 Chevrolet Express | 1/2 TON CARGO EXPRESS, 1/2 TON CARGO SAVANA, 1/2 TON PASSENGER EXPRESS, 1/2 TON PASSENGER SAVANA | 6 Cyl 4.3L
View related parts
Chevrolet Express Knock Sensor
Part Number: 10456287
Product Specifications
- Other Name: SENSOR, Distributor (also Knock Sensor); Control Module, ESC Sensor, Knock Sensor, Sensor
- Replaces: 10456017
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1996-2002 Chevrolet Express | 1/2 TON CARGO EXPRESS, 1/2 TON PASSENGER EXPRESS, 3/4 TON CARGO EXPRESS, 3/4 TON PASSENGER EXPRESS | 8 Cyl 5.0L
View related parts
Chevrolet Express 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:
- 2001-2002 Chevrolet Express | 1 TON CARGO EXPRESS, 1 TON COMMERCIAL/RECREATIONAL VEHICLE EXPRESS, 1 TON PASSENGER | 8 Cyl 8.1L
View related parts
Chevrolet Express 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 Chevrolet Express | 1/2 TON CARGO EXPRESS, 1/2 TON PASSENGER EXPRESS, 3/4 TON CARGO EXPRESS, 3/4 TON PASSENGER EXPRESS | 6 Cyl 4.3L
View related parts
Chevrolet Express Knock Sensor
Part Number: 10456232
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:
- 1996-2000 Chevrolet Express | 1 TON CARGO EXPRESS, 1 TON COMMERCIAL/RECREATIONAL VEHICLE EXPRESS, 1 TON PASSENGER | 8 Cyl 7.4L
View related parts
Chevrolet Express 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:
- 1996-2000 Chevrolet Express | 1/2 TON CARGO EXPRESS, 1/2 TON PASSENGER EXPRESS, 3/4 TON CARGO EXPRESS, 3/4 TON PASSENGER EXPRESS | 6 Cyl 4.3L

Chevrolet Express Knock Sensor

The Chevrolet Express Knock Sensor protects the engine of the van from harmful spark knock by detecting it and signaling the powertrain control module to take action before damage occurs. Mounted on the block is this Knock Sensor that relies on a piezoelectric element that converts the sharp vibration of detonation into an electrical signal the computer can read. The Knock Sensor provides data continuously for the control loop to trim the ignition timing in very small steps until the knock subsides and then gradually increases the advance to keep power high without crossing the danger line. Later generations of the Express added smarter programming that is able to adjust timing for each cylinder separately, a leap beyond the early single channel design, but the basic piezoelectric sensing method remains the same. The common thread between all of the Chevrolet versions is the desire to allow the engine to operate near its knock limit so that drivers experience powerful performance even with lower octane fuel or changing weather. If a Knock Sensor fails, timing remains fixed and the engine can ping, lose power, and be damaged, which is why it is important to have a healthy Knock Sensor in every Chevrolet Express engine.

Each OEM Chevrolet Express 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 Express Knock Sensor Parts Questions & Experts Answers

Knock Sensor
10456288
Q: How to remove and install knock sensors on Chevrolet Express?
A:
Take off the cable from the battery's negative terminal. The 4.3L V6 engine knock sensor is located on the back part of the engine block, to the left of the distributor. A threaded unit is screwed into a block for the knock sensor found in 1996 through 2000 models. On 2001 and later models, however, there is a knock sensor yet it is located at this point but bolted to a block. Eliminate an engine cover.Disconnect an electric contactor from a knocking sensor. Removing the shock absorber from the socket.Eliminate an electric socket by carefully screwing out its plug.Remove it with simply unscrewing it.Such are on 2018 and beyond versions of 4.3L V6 engines that have two detonation sensors positioned under each distal part of exhaust.Central bolt can be removed to take away those detectors out.First you should remove fasteners or nuts while turning them counterclockwise.Installation basically involves following removal procedures.Be carful when fixing torque either for tightening knock sensor or mounting bolt, otherwise, tightening will result in bad outcomes.For all these three engines (5.0L, 5.7L and 7.4L), their right side before starting motor has got one device meant for detecting early emissions of abnormal sounds.Prior to any checks after repair work, lift car front so as to put jacks below front wheels.Turn off an electrical connector through which a knocking sensor communicates.Untwist and get rid of a shock absorber.It comes down to reversing disassembling procedure in order to install it.The only thing needed now is tightness of this component.Either way it should be done correctly only once fitted instead.In such situations never employ any sealing substance plus thread resistant material onto knocking detector or its attaching means.This kind of adjustment causes poor work rate either by tightening more than that or lesser than the needed level of a knocking sensor.