Installation Procedure

WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

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: Knock Sensor Oil Seals & Engine Valley Cover
Courtesy of GENERAL MOTORS CORP.
Install the engine valley cover and a NEW gasket onto the engine block.
NOTE: Refer to FASTENER NOTICE .
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: Rubber Covers & Knock Sensor Electrical Connectors
Courtesy of GENERAL MOTORS CORP.