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
Courtesy of GENERAL MOTORS CORP.
Install the engine valley cover and a NEW gasket onto the engine block.
CAUTION: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
Install the engine valley cover bolts.
Tighten

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

Fig 2: Installing Engine Valley Cover, Gasket & Bolts
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.