Engine Valley Cover Installation

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.

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

Fig 1: Knock Sensor Oil Seal & Valley Cover
Courtesy of GENERAL MOTORS CORP.
Install the valley cover and NEW gasket.
NOTE: Refer to FASTENER NOTICE .
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.