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Home >> Chevrolet >> 2001 >> Venture Base, Van Passenger >> Repair and Diagnosis >> External Pages >> Different car >> Section 427 (Engine Exhaust System) >> Repair Instructions >> Exhaust Manifold Replacement - Left (L47) >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2002 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the two nuts (2) attaching the secondary AIR tube (3) to the exhaust manifold (1).
  2. Remove the secondary AIR tube (3) and the gasket from the exhaust manifold (1). Do not reuse the gasket.
    3. Fig 1: Removing Secondary AIR Tube & Gasket From Exhaust Manifold
    G01818168Courtesy of GENERAL MOTORS CORP.
  3. Remove the front engine mount bracket. Refer to ENGINE MOUNT BRACKET REPLACEMENT - FRONT .
  4. Raise and support the vehicle.
  5. Remove the oxygen sensor if replacement is necessary. Refer to UPSTREAM HEATED OXYGEN SENSOR .
  6. Remove the two bolts attaching the left exhaust manifold to the front exhaust manifold pipe.
    Fig 2: Removing Left Exhaust Manifold To Front Exhaust Manifold Pipe Bolts
    G01818169Courtesy of GENERAL MOTORS CORP.
  7. Remove the left exhaust manifold retaining bolts.
  8. Remove the left exhaust manifold and the gasket from the engine. Do not reuse the gasket.
  9. Remove the front exhaust manifold pipe seal from the left exhaust manifold. Do not reuse the seal.
  10. Remove the exhaust manifold flange seal retainer.
    11. Fig 3: Removing Left Exhaust Manifold
    G01818170Courtesy of GENERAL MOTORS CORP.
  11. Clean and inspect the left exhaust manifold. Refer to EXHAUST MANIFOLD CLEANING AND INSPECTION - LEFT .
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