How to service the knock sensor on GMC C3500?

Remove the negative Battery Cable before trying to service the Knock Sensor. After that, lift the vehicle and take off the connection for the Knock Sensor harness. After that, take out the Knock Sensor (2) from the cylinder block (1). To install, put the Knock Sensor back into the cylinder block and make sure it is tightened with 19 n.m (14 lb ft). Then, attach the Knock Sensor harness connector, bring the vehicle back to the ground and lastly secure the negative Battery Cable.

OEM GMC C3500 Knock Sensor

Engine Knock Sensor

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3 Knock Sensors found

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GMC C3500 Knock Sensor
Part Number: 10456549
$37.66 MSRP: $117.47
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Product Specifications
- Other Name: Sensor, Distributor (Also Knock Sensor); ESC Sensor
- Replaces: 10456031
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1991-1995 GMC C3500 | Sierra, Sierra SL, Sierra SLE, Sierra SLT, Sierra SLX | 8 Cyl 5.7 L GAS, 8 Cyl 7.4 L GAS
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GMC C3500 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
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1988-2000 GMC C3500 | Sierra, Sierra SL, Sierra SLE, Sierra SLT, Sierra SLX | 8 Cyl 5.7 L CNG, 8 Cyl 5.7 L GAS, 8 Cyl 7.4 L GAS
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GMC C3500 Knock Sensor
Part Number: 10456232
Product Specifications
- Other Name: Sensor, Distributor (Also Knock Sensor)
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1996-2000 GMC C3500 | Sierra SL, Sierra SLE, Sierra SLT | 8 Cyl 7.4 L GAS

GMC C3500 Knock Sensor

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GMC C3500 Knock Sensor Parts Questions & Experts Answers

Knock Sensor
10456288
Q: How to service the knock sensor on GMC C3500?
A: Remove the negative Battery Cable before trying to service the Knock Sensor. After that, lift the vehicle and take off the connection for the Knock Sensor harness. After that, take out the Knock Sensor (2) from the cylinder block (1). To install, put the Knock Sensor back into the cylinder block and make sure it is tightened with 19 n.m (14 lb ft). Then, attach the Knock Sensor harness connector, bring the vehicle back to the ground and lastly secure the negative Battery Cable.

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