Knock Sensor - Removal
6.1L
Two knock sensors (1) are used. Each sensor is bolted to the outside of the cylinder block below the exhaust manifold (3).
1. Raise the vehicle.
2. Disconnect the knock sensor electrical connector (5).
3. Remove the knock sensor mounting bolt (2).
NOTE: Note the foam strip on bolt threads. This foam strip is used only to retain the bolts to the sensors for plant assembly. It is not used as a sealant. Do not apply any adhesive, sealant or thread locking compound to these bolts.
4. Remove the knock sensor (1) from the engine.