Installation Procedure

WARNING: This page is about a different car, the 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 Chevrolet TrailBlazer, and 2004 Buick Rainier. 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.

Fig 1: View Of Knock Sensor Oil Seals & Cover

Courtesy of GENERAL MOTORS CORP.

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 2: View Of Engine Valley Cover, Gasket & Bolts

Courtesy of GENERAL MOTORS CORP.

NOTE: Refer to Fastener Notice in Cautions and Notices.

Install the engine valley cover and a NEW gasket onto the engine block.
Install the engine valley cover bolts.
Tighten: Tighten the bolts to 25 N.m (18 lb ft).

Fig 3: View Of Knock Sensors

Courtesy of GENERAL MOTORS CORP.

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

Fig 4: View Of Rubber Covers

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 .