GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2007 🢒 Express - AWD 🢒 Engine 🢒 Engine Controls and Fuel - 6.6L (LBZ and LLY) 🢒 Exhaust Gas Recirculation Valve Replacement

Removal Procedure
  1. Remove the engine cover. Refer to Engine Cover Replacement .
  2. Remove the generator. Refer to Generator Replacement .
  3. Remove the intake manifold tube. Refer to Intake Manifold Tube Replacement .
  4. Remove the exhaust gas recirculation (EGR) coolant hose. Refer to Exhaust Gas Recirculation Coolant Hoses/Pipes Replacement .
  5. Remove the right exhaust pipe. Refer to Exhaust Pipe Replacement - Right Side .

    6. Object Number: 1731885 Size: SH
  6. Compress the clamp and disconnect the EGR heater inlet hose/pipe from the EGR cooler tube.

    7. Object Number: 1731879 Size: SH
  7. Remove the EGR cooler tube bracket bolt.
  8. Remove the crankcase ventilation hose/pipe. Refer to Positive Crankcase Ventilation Hose/Pipe/Tube Replacement .

    9. Object Number: 1731880 Size: SH
  9. Disconnect the EGR solenoid electrical connector.

    10. Object Number: 1731884 Size: SH
  10. Remove the EGR nut (1) and bolt (2).
  11. Remove the EGR valve and EGR cooler tube as an assembly.

    12. Object Number: 1731886 Size: SH
  12. On the bench, remove the 2 EGR valve to EGR cooler tube bolts.
  13. Separate the EGR valve from the EGR cooler tube.

    14. Object Number: 1731887 Size: SH
  14. If necessary, remove the EGR bracket bolt, nut, and EGR bracket.
  15. Discard the EGR valve gasket.

Installation Procedure

    Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1731887 Size: SH
  1. If necessary, install the EGR bracket, the EGR bracket bolt, and nut.

    2. Tighten
    Tighten the EGR bracket bolt and nut to 25 N·m (18 lb ft).


    Object Number: 1731886 Size: SH
  2. Position the EGR valve to the EGR cooler tube, using a NEW EGR valve gasket.
  3. Install the 2 EGR valve to EGR cooler tube bolts.

    4. Tighten
    Tighten the EGR valve to EGR cooler tube bolts to 20 N·m (15 lb ft).

  4. Position the EGR valve and EGR cooler tube assembly in the vehicle.

    5. Object Number: 1731884 Size: SH
  5. Install the EGR nut (1) and bolt (2).

    6. Tighten
    Tighten the EGR nut and bolt to 50 N·m (37 lb ft).


    Object Number: 1731880 Size: SH
  6. Connect the EGR solenoid electrical connector.
  7. Remove the crankcase ventilation hose/pipe. Refer to Positive Crankcase Ventilation Hose/Pipe/Tube Replacement .

    8. Object Number: 1731879 Size: SH
  8. Install the EGR cooler tube bracket bolt.

    9. Tighten
    Tighten the EGR cooler tube bracket bolt to 25 N·m (18 lb ft).


    Object Number: 1731885 Size: SH
  9. Compress the clamp and connect the EGR heater inlet hose/pipe to the EGR cooler tube.
  10. Install the right exhaust pipe. Refer to Exhaust Pipe Replacement - Right Side .
  11. Install the EGR coolant hose. Refer to Exhaust Gas Recirculation Coolant Hoses/Pipes Replacement .
  12. Install the intake manifold tube. Refer to Intake Manifold Tube Replacement .
  13. Install the generator. Refer to Generator Replacement .
  14. Install the engine cover. Refer to Engine Cover Replacement .