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Home >> Buick >> 2007 >> Allure CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 51 (Engine Exhaust System) >> Repair Instructions >> Exhaust Manifold Replacement - Right Side (RPO LY7) >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2008 Buick LaCrosse and 2008 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Supporting Powertrain With Utility Stand At Center Of Left Frame
    GM1408730Courtesy of GENERAL MOTORS CORP.
  1. Remove the air inlet duct. Refer to Air Cleaner Inlet Duct Replacement .
  2. Remove the master cylinder fluid level sensor in order to provide clearance for lowering the powertrain. Refer to Brake Fluid Level Indicator Switch Replacement .
  3. Remove the engine mount struts. Refer to Engine Mount Strut Replacement - Left Side and Engine Mount Strut Replacement - Right Side .
  4. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  5. Remove the catalytic converter. Refer to Catalytic Converter Replacement .
    6. Fig 2: Identifying Exhaust Crossover Pipe Nuts & Studs
    GM1395470Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Use a long extension in order to remove the exhaust crossover pipe nuts.
  6. Remove the exhaust crossover pipe to right bank exhaust manifold nuts (3).
    7. Fig 3: View Of Exhaust Manifold
    GM1645139Courtesy of GENERAL MOTORS CORP.
  7. Remove the exhaust manifold bolts.
  8. Remove the exhaust manifold.
  9. Remove and discard the exhaust manifold gasket.
    10. Fig 4: View Of Exhaust Manifold Heat Shield
    GM1645140Courtesy of GENERAL MOTORS CORP.
  10. If replacing the exhaust manifold, remove the exhaust manifold heat shield bolts and the heat shield.
  11. Clean the exhaust manifold sealing surfaces.
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