GM 12591625
Knock Sensor

To replace Knock Sensor 2 begin by turning off the Ignition Switch and then lifting the vehicle into position. Start by removing the splash shield bolts and draining the vehicle's cooling system. To start the replacement process remove the two bolts found under the freeze plug or block heater that secure the Knock Sensor heat shield. Unplug the wiring harness connector from the Knock Sensor before extracting the sensor from its position on the engine block. Installation of the sensor requires avoiding thread sealant on the threads because casting on the sensor threads ensures appropriate detonation detection. Screw the Knock Sensor into its position in the engine block with a torque of 19 n.m (14 lb ft). The Knock Sensor heat shield requires reinstallation followed by tight bolting at 60 n.m (44 lb ft). Lower the vehicle afterward while reinstalling the splash shield and hook up the electrical connections to the Knock Sensor. Complete the process by filling the cooling system then checking the fluid level.

Begin bank 2 Knock Sensor (KS) replacement by first turning off the Ignition Switch then safely raising the vehicle while observing all vehicle lifting safety measures. Begin by taking off splash shield bolts then draining the cooling system fluid. The maintenance procedure begins by loosening the two bolts fixing the Knock Sensor heat shield below the freeze plug and block heater on equipped vehicles. Afterward disconnect the electrical connector from the Knock Sensor. You should remove the Knock Sensor which exists inside the engine block. The sensor features a factory-coated thread system that requires factory conditions for proper detonation detection so do not use thread sealant when installing the sensor. Secure the Knock Sensor within the engine block yet maintain torque to 19 nm (14 lb ft). Place the Knock Sensor heat shield back into its correct position while securing its two bolts at 60 nm (44 lb ft). Continue by connecting the electrical connector to the Knock Sensor followed by splash shield installation. Then lower the vehicle and complete coolant filling and level verification.

Vehicle technicians should start by turning off the Ignition Switch before lifting the car since they need to follow secure vehicle lifting principles. First remove splash shield bolts while maintaining safety from hot engine coolant which remains in the water jacket even though you drained the cooling system. Drain the cooling system before removing the two bolts from the Knock Sensor heat shield situated below the freeze plug or block heater area. First disconnect the electrical connection of the Knock Sensor then extract the sensor from its mounting position on the engine block. Installation should not include thread sealants on the sensor threads since factory coating requires its presence for successful detonation detection. Tighten the Knock Sensor inside the engine block with 19 n.m (14 lb ft) of torque. Screw in the Knock Sensor heat shield with a torque of 60 n.m (44 lb ft. Installation involves plugging the electrical connector to the Knock Sensor before installing the splash shield while lowering the vehicle for filling the cooling system and checking the coolant level.

In order to replace the Knock Sensor (KS) 2, first lift the vehicle and support it. Drain the cooling system to avoid burns from hot engine coolant that might still be indwelt in the engine water jacket. Disconnected the electrical connector and remove the knock sensor (KS) . When installing the new KS do not apply thread sealant on the sensor threads because they are factory-coated and more sealant will reduce their ability to detect detonation. torque to 19 N.m/14lbft. After installing, reconnect the KS electrical connector, drop the vehicle, and top up the cooling system.

To replace Knock Sensor 1, you need to drain the cooling system to protect from being burned by hot engine coolant, which could still be in the engine water jacket. Using an engine harness electrical connector, disconnect its wire from the knock sensor and carefully remove the sensor itself. During the installation of the new knock sensor do not apply thread sealant to the threads of the sensor as it has a factory coated thread and extra sealant may disable the ability to detect detonation; tighten the sensor to 18 N.m (13 lb ft). Ensure that all connections are secure and there are no leaks in the system. Following installation, reconnect engine harness electrical connector to knock sensor and fill up cooling system.

Begin the Knock Sensor (KS) for Bank 2 replacement by turning off the ignition followed by vehicle lifter and support. You must remove the wiring harness heat shield from the oil level indicator tube for access before disconnecting the KS electrical connector. Start by uninstalling the KS bolt then extract the KS from its position. Secure the new KS in its position with the KS bolt while tightening the bolt to 23 N.m (17 lb ft) as specified in the Fastener Notice of Service Precautions. Commence by reinstalling the wiring harness heat shield to the oil level indicator tube following KS electrical connector reattachment then lower the vehicle.

Begin the ks 2 replacement procedure by elevating and securely supporting your vehicle. Start by draining the cooling system before removing the Knock Sensor heat shield's two retaining bolts. The Knock Sensor requires its electrical connector along with itself to be removed. The manufacturer already applies thread coating to the sensor which means adding thread sealant is unnecessary during installation. Install the Knock Sensor with 19 n.m (14 lb ft) of torque. Replace the heat shield while securing the bolts using 60 n.m of torque (44 lb ft of torque). Connect the electrical connector to replace the vehicle's lowered position then add coolant to the system.

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.

Begin ks bank 2 installation by turning ignition off while raising the vehicle. First begin by removing splash shield bolts and draining your cooling system fluid. The first step involves the removal of two bolts which secure the Knock Sensor heat shield below the freeze plug or block heater (if these are installed). First disconnect the wiring harness connector from the Knock Sensor before you remove the sensor from its location on the engine block. Thermal insulation on the sensor threads prohibits the use of thread sealant during installation because proper detonation detection depends on the factory coating. Fit the Knock Sensor into the engine block while tightening it to 19 n.m (14 lb ft). Reverse the Knock Sensor heat shield by tightening its bolts to 60 n.m (44 lb ft). After installing the Knock Sensor electrical connector move to reinstall the splash shield and lower the vehicle. Complete the cooling system addition before examining the coolant's current level.

Reinstall the knock sensor heat shield and tighten the bolts to 60 N.m (44 lb ft).

Tighten it to 23 N.m (17 lb ft).

Tighten it to 19 N.m (14 lb ft).

No, do not apply thread sealant to the sensor threads as it is factory-coated, which is essential for proper detonation detection.

Turn OFF the ignition switch and raise the vehicle, ensuring to follow proper lifting precautions.

Reinstall the knock sensor heat shield and tighten the bolts to 60 N.m (44 lb ft).

Tighten it to 23 N.m (17 lb ft).

Disconnect the knock sensor wiring harness electrical connector.

Tighten it to 19 N.m (14 lb ft).

No, do not apply thread sealant to the sensor threads as it is factory-coated, which is essential for proper detonation detection.

Remove the two bolts from the knock sensor heat shield located under the freeze plug (or block heater if equipped).

Remove the knock sensor from the engine block.

Connect the engine harness electrical connector to the knock sensor, then install the heat shield and bolts, tightening them to 60 N.m (44 lb ft).

Remove the bolts from the splash shield and drain the cooling system.

Turn the ignition OFF and then raise and support the vehicle.

Reconnect the engine harness electrical connector to the knock sensor and fill the cooling system.

Reinstall the knock sensor heat shield mounting bolt, connect the wiring harness connector to the knock sensor, install the splash shield, lower the vehicle, and fill the cooling system.

No, do not apply thread sealant to the sensor threads, as it is factory-coated and additional sealant will impair its ability to detect detonation.

Remove the bolts from the splash shield and drain the cooling system.

Reconnect the knock sensor electrical connector.

No, do not apply thread sealant as the sensor is pre-coated.

First, drain the cooling system, as hot engine coolant may cause severe burns and some coolant will remain in the engine water jacket during the process.

No, do not apply thread sealant to the sensor threads, as it is factory-coated and additional sealant will impair its ability to detect detonation.

Hand start the knock sensor into the engine block and tighten it to 19 N.m (14 lb ft).

Turn OFF the ignition and raise the vehicle using appropriate lifting techniques.

Tighten the sensor to 19 N.m (14 lb ft).

Additional sealant can impair the sensor's ability to detect detonation.

Lower the vehicle and fill the cooling system.

Additional sealant can impair the sensor's ability to detect detonation.

Disconnect the knock sensor wiring harness electrical connector and remove the knock sensor.

No, do not apply thread sealant to the sensor threads, as they are factory-coated.

Tighten it to 19 N.m (14 lb ft).

Install the KS into the engine block and tighten it to 19 N.m (14 lb ft).

Reconnect the knock sensor electrical connector to the knock sensor, lower the vehicle, and fill the cooling system.