Installation Procedure

Fig 1: EGR Valve Inlet Adapter Pipe

Courtesy of GENERAL MOTORS CORP.

NOTE: Refer to Fastener Notice in Cautions and Notices.

Install the EGR valve inlet adapter pipe bolts (2).
Tighten: Tighten the bolts to 50 N.m (37 lb ft).
Raise the vehicle.
Install the EGR valve inlet adapter pipe mounting bolt (1) to the exhaust manifold.
Tighten: Tighten the bolt to 25 N.m (18 lb ft).

Fig 2: EGR Valve Inlet Adapter Pipe Mounting Bolt

Courtesy of GENERAL MOTORS CORP.

Lower the vehicle.
Install the EGR valve outlet pipe. Refer to Exhaust Gas Recirculation (EGR) Outlet Pipe Replacement .
Install the EGR valve. Refer to Exhaust Gas Recirculation (EGR) Valve Replacement .
Install the exhaust manifold heat shield.

Fig 3: Exhaust Manifold Heat Shield

Courtesy of GENERAL MOTORS CORP.

Install the exhaust manifold heat shield bolts (2).
Tighten: Tighten the bolts to 10 N.m (89 lb in).
Install the heated oxygen sensor (HO2S). Refer to Heated Oxygen Sensor Replacement - Position 1 .
Install the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement (L26) or Fuel Injector Sight Shield Replacement (L32) in Engine Mechanical - 3.8L.