GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2006 🢒 Yukon Denali 🢒 Engine 🢒 Engine Mechanical - 8.1L 🢒 Exhaust Manifold Installation - Right Side

    Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 470723 Size: SH
  1. Install the exhaust manifold studs into the cylinder head, if necessary.

    2. Tighten
    Tighten the exhaust manifold studs to 20 N·m (15 lb ft).


    Object Number: 1309943 Size: SH
  2. Install the NEW right exhaust manifold gasket.
  3. Install the right exhaust manifold.
  4. Install the right exhaust manifold nuts and center bolt.

    5. Tighten

        • Tighten the right exhaust manifold center bolt to 35 N·m (26 lb ft).
        • Tighten the right exhaust manifold nuts to 16 N·m (12 lb ft).

    Object Number: 1309942 Size: SH
  5. Install the right exhaust manifold heat shield.
  6. Install the right exhaust manifold heat shield bolts and nuts.

    7. Tighten
    Tighten the right exhaust manifold heat shield bolts and nuts to 25 N·m (18 lb ft).


    Object Number: 470727 Size: SH
  7. Install the spark plugs.

    8. Tighten
    Tighten the spark plugs to 30 N·m (22 lb ft).


    Object Number: 1309940 Size: SH

    Important: Fully install the spark plug wire by pushing on the exposed end of the spark plug boot. Do not push the spark plug wire on to the spark plug by using the metal heat shield.

  8. Install the spark plug wires to the spark plugs and ignition coils.