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Exhaust Manifold Installation (LDK, LHU)

WARNING: This page is about a different variant/trim than selected.
    Fig 1: Exhaust Manifold Mounting Studs
    GM2146390Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Fastener Caution .

  1. Install new exhaust manifold studs (1) and tighten to 15 N.m (11 lb ft).
    2. Fig 2: Identifying Exhaust Manifold, Gasket & Nuts
    GM2146280Courtesy of GENERAL MOTORS COMPANY
  2. Install the exhaust manifold gasket (2).
  3. Install the exhaust manifold (1) to the cylinder head.
    4. NOTE:

    Install the Torx® nut (3) in the correct location.

  4. Install NEW exhaust manifold to cylinder head retaining nuts finger tight.
    5. Fig 3: Exhaust Manifold Bolt Tightening Sequence
    GM1340643Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Use an inverted Torx® socket E16 to tighten the Torx® nut.

  5. Tighten the NEW exhaust manifold to cylinder head retaining nuts in sequence.
    1. Tighten the exhaust manifold nuts to 14 N.m (10 lb ft).
    2. Tighten the exhaust manifold nuts a second time to 14 N.m (10 lb ft).
    6. Fig 4: Exhaust Manifold Heat Shield
    GM2146279Courtesy of GENERAL MOTORS COMPANY
  6. Install the exhaust manifold heat shield (1).
  7. Install the exhaust manifold heat shield bolts and tighten to 25 N.m (18 lb ft).
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