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Home › Chevrolet › 2008 › Optra LS, Standard › Repair and Diagnosis › Engine Performance › System › Engine Controls And Fuel - 2.0L (L34 GMDAT) - Introduction › Repair Instructions › Exhaust Gas Recirculation Valve Adapter Pipe Replacement › Installation Procedure

Installation Procedure

  1. Position the EGR valve adapter and gasket.
    2. NOTE: Refer to Fastener Notice .
    Fig 1: Identifying EGR Valve Adapter And Retaining Bolts
    GM1671469Courtesy of GENERAL MOTORS CORP.
  2. Install the EGR valve adapter retaining bolts.

    Tighten: 

    • Tighten the EGR valve adapter retaining bolts (1) to 20 N.m (15 lb ft)  .
    • Tighten the EGR valve adapter retaining bolts (2) to 30 N.m (22 lb ft)  .

  3. Install the heater return hose to the EGR valve adapter.
  4. Connect the EGR valve and the CTS electrical connectors.
  5. Install the spark plug wires.
  6. Install the valve rocker arm cover. Refer to Valve Rocker Arm Cover Replacement .
  7. Refill the engine coolant. Refer to Cooling System Draining and Filling (Gasoline Engines ) or Cooling System Draining and Filling (Diesel Engine) .
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