Installation Procedure

WARNING: This page is about a different car, the 2003 GMC Envoy XL and 2003 Chevrolet TrailBlazer. 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: Installing Knock Sensor Oil Seals Into 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 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 And Gasket Onto Engine Block
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.