Engine Valley Cover Installation

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

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

Fig 1: Installing Knock Sensor Oil Seals Into Valley Cover
Courtesy of GENERAL MOTORS CORP.
Install the valley cover and NEW gasket.
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 valley cover bolts.
Tighten

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

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

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

Fig 3: Installing Knock Sensors
Courtesy of GENERAL MOTORS CORP.
Install the knock sensor wire harness.

Fig 4: Installing Knock Sensor Wire Harness
Courtesy of GENERAL MOTORS CORP.