2004 Chevrolet Impala LSFACTORY OEM SERVICE PROCEDURE

Installation Procedure

  1. Install the EGR valve inlet adapter pipe (1).
  2. NOTE: Refer to Fastener Notice in Cautions and Notices.
  3. Install the EGR valve inlet adapter pipe bolts and studs (2,3).

    Tighten:Β  Tighten the bolt and stud to 50 N.m (37 lb ft).

  4. Fig 1: Installing EGR Valve Inlet Adapter Pipe
    GM703601Courtesy of GENERAL MOTORS CORP.
  5. Raise the vehicle.
  6. Install the EGR valve inlet adapter pipe bolt (2) to the exhaust manifold.

    Tighten:Β  Tighten the bolt to 30 N.m (22 lb in).

  7. Fig 2: Installing EGR Valve Inlet Adapter Pipe Mounting Bolt
    GM703604Courtesy of GENERAL MOTORS CORP.
  8. Lower the vehicle.
  9. Install the EGR valve outlet pipe. Refer to Exhaust Gas Recirculation (EGR) Outlet Pipe ReplacementΒ .
  10. Install the EGR valve. Refer to Exhaust Gas Recirculation (EGR) Valve ReplacementΒ .
Factory Service Tools

Use the Manual With the Right Hardware

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

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