Sierra Classic 2500 4WD V8-8.1L (2007)
Knock Sensor: Service and Repair
Knock Sensor Replacement 2
KNOCK SENSOR 2 REPLACEMENT
REMOVAL PROCEDURE
1. Drain the cooling system/engine block. Refer to Draining and Filling Cooling System (Static Fill) Draining and Filling Cooling System (w/RPO
HP2) Draining and Filling Cooling System (Vac-N-Fill).
2. Disconnect the knock sensor electrical connector (3).
3. Remove the knock sensor.
INSTALLATION PROCEDURE
NOTE: Refer to Fastener Notice.
1. Install the knock sensor.
Tighten the sensor to 20 N.m (15 lb ft).
2. Connect the knock sensor electrical connector (3).
3. Fill the cooling system/engine block. Refer to Draining and Filling Cooling System (Static Fill) Draining and Filling Cooling System (w/RPO
HP2) Draining and Filling Cooling System (Vac-N-Fill).
