K 3500 Truck 4WD V8-454 7.4L VIN N TBI (1995)
Knock Sensor: Service and Repair
REMOVE OR DISCONNECT
1. Negative battery cable.
2. Drain cooling system.
NOTE: On knock sensors which are mounted in the end of the cylinder head draining the cooling system will not be necessary.
3. Wiring harness connector from knock sensor.
4. Knock sensor from cylinder head or block.
INSTALL OR CONNECT
1. Knock sensor into cylinder head or block. Apply water base caulk to sensor threads. Do not use silicon tape as this will insulate sensor from engine
block. Tighten to 19 Nm (14 lb. ft.).
2. Wiring harness connector to the knock sensor.
3. Negative battery cable.
4. Refill cooling system if required.
