GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 872853  Size: SH
  1. Turn the ignition OFF.
  2. Disconnect the EGR valve harness connector.
  3. Remove the EGR valve attachment bolts and EGR valve and gasket.
  4. Notice: The EGR valve should not be soaked in any solvent. Otherwise damage to the electrical solenoid and position sensor could result.

    Notice: Remove all loose deposits from the EGR inlet passage, otherwise they could clog the EGR valve.

  5. Inspect the cylinder head, EGR valve, and adapter passages for excessive carbon deposits. Deposits can be removed using a screwdriver.
  6. Clean the EGR valve mounting surfaces and inspect for scoring and cracks.

Installation Procedure


    Object Number: 872853  Size: SH

    Important: Ensure the gasket is installed correctly or a vacuum leak will occur.

  1. Install the new EGR valve gasket.
  2. Install the EGR valve.
  3. Notice: Refer to Fastener Notice in the Preface section.

  4. Install the EGR valve attachment bolts.
  5. Tighten
    Tighten the EGR Valve-to-Head bolts to 25 N·m (19 lb ft).

  6. Connect the EGR valve harness connector. Push in the connector until a click is heard and pull back to confirm a positive engagement.
  7. Start the engine and inspect for exhaust gas leaks.