Installation Procedure

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Important: All gasket surfaces should be free of oil or other foreign material during assembly.

Lubricate the NEW knock sensor seals (1) with clean engine oil.
Install the knock sensor oil seals (1) into the engine valley cover (2).

Fig 1: Installing Knock Sensor Oil Seals From Cover
Courtesy of GENERAL MOTORS CORP.
Install the engine valley cover with a NEW gasket onto the engine block.
NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
Install the engine valley cover bolts.
Tighten

Tighten the bolts to 25 N.m (18 lb ft).

Fig 2: Installing Engine Valley Cover, Bolts & Gasket
Courtesy of GENERAL MOTORS CORP.
Install the knock sensors.
Tighten

Tighten the sensors to 20 N.m (15 lb ft).

Fig 3: Installing Knock Sensors
Courtesy of GENERAL MOTORS CORP.
Connect the knock sensor electrical connectors.
Push down on the rubber covers.
Install the intake manifold. Refer to INTAKE MANIFOLD REPLACEMENT .

Fig 4: Connecting Knock Sensor Electrical Connectors
Courtesy of GENERAL MOTORS CORP.