GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2008 🢒 Corvette 🢒 Engine 🢒 Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L 🢒 Exhaust Manifold Installation - Left Side

Exhaust Manifold Installation - Left Side 6.2L

    Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1408850 Size: SH

    Important: 

       • Tighten the exhaust manifold bolts as specified in the service procedure. Improperly installed and/or leaking exhaust manifold gaskets may affect vehicle emissions and/or on-board diagnostic (OBD) II system performance.
       • The cylinder head exhaust manifold bolt hole threads must be clean and free of debris or threadlocking material.
       • Do not apply sealant to the first 3 threads of the bolt.

  1. Install the heat shield (603) and bolts (604).

    2. Tighten
    Tighten the bolts to 9 N·m (80 lb in).

  2. Install the exhaust pipe studs (605).

    3. Tighten
    Tighten the studs to 20 N·m (15 lb ft).


    Object Number: 1408849 Size: SH
  3. Apply a 5 mm (0.2 in) wide band of threadlock GM P/N 12345493 (Canadian P/N 10953488), or equivalent, to the threads of the exhaust manifold bolts. Refer to Adhesives, Fluids, Lubricants, and Sealers .
  4. Install the exhaust manifold, NEW gasket, and bolts.

    5. Tighten

    1. Tighten the exhaust manifold bolts a first pass to 15 N·m (11 lb ft). Tighten the exhaust manifold bolts beginning with the center 2 bolts. Alternate from side-to-side, and work toward the outside bolts.
    2. Tighten the exhaust manifold bolts a final pass to 20 N·m (15 lb ft). Tighten the exhaust manifold bolts beginning with the center 2 bolts. Alternate from side-to-side, and work toward the outside bolts.
  5. Using a flat punch, bend over the exposed edge of the exhaust manifold gasket at the rear of the left cylinder head.

Exhaust Manifold Installation - Left Side 7.0L

    Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1552472 Size: SH

    Important: 

       • Tighten the exhaust manifold bolt as specified in the service procedure. Improperly installed and/or leaking exhaust manifold gaskets may affect vehicle emissions and/or on-board diagnostic (OBD) II system performance.
       • The cylinder head exhaust manifold bolt hole threads must be clean and free of debris or threadlocking material.
       • Do not apply sealant to the first 3 threads of the bolts.

  1. Install the heat shield (603) and bolts (604).

    2. Tighten
    Tighten the bolts to 9 N·m (80 lb in).

  2. Install the studs (605).

    3. Tighten
    Tighten the studs to 20 N·m (15 lb ft).


    Object Number: 1552529 Size: SH
  3. Apply a 5 mm (0.2 in) wide band of threadlock GM P/N 12345493 (Canadian P/N 10953488), or equivalent, to the threads of the exhaust manifold bolts. Refer to Adhesives, Fluids, Lubricants, and Sealers .
  4. Install the exhaust manifold (600), NEW gasket (601), and bolts (602).

    5. Tighten

    1. Tighten the exhaust manifold bolts a first pass to 15 N·m (11 lb ft). Tighten the exhaust manifold bolts beginning with the center 2 bolts. Alternate from side-to-side, working toward the outside bolts.
    2. Tighten the exhaust manifold bolts a final pass to 20 N·m (15 lb ft). Tighten the exhaust manifold bolts beginning with the center 2 bolts. Alternate from side-to-side, working toward the outside bolts.
  5. Using a flat punch, bend over the exposed edge of the exhaust manifold gasket at the rear of the left cylinder head.