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For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1998 🢒 GMC P42 Commercial Chassis 🢒 Engine 🢒 Engine Mechanical - 6.5L 🢒 Intake Manifold Installation

Intake Manifold Installation Upper-L65


    Object Number: 59749 Size: SH
  1. Apply the silicone sealant GM P/N 9985943, or equivalent to the turbocharger outlet.
  2. Install the intake manifold gasket.
  3. Slide the intake into the turbocharger outlet hose.
  4. Install the intake manifold.

    5. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  5. Install the intake manifold bolts.

    6. Tighten
    Tighten the bolts to 23 N·m (17 lb ft).


    Object Number: 59746 Size: SH
  6. Install the clamp for the turbocharger connector hose.

    7. Tighten
    Tighten the connector hose clamps to 6 N·m (50 lb in).

Intake Manifold Installation L57, L65


    Object Number: 59835 Size: SH
  1. Install the intake manifold and gaskets.

    2. Object Number: 59761 Size: SH

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  2. Install the intake manifold bolts/studs and fuel line clips.
    3. • Use teflon sealer to seal the four bolts, numbers 9, 11, 13, and 15 that are exposed to the crankcase.
    • Apply threadlocker GM P/N 12345493 to the threads of the bolts and the studs that are not numbered 9, 11, 13, or 15.

    Tighten
    Tighten the intake manifold bolts/studs, in sequence, to 42 N·m (31 lb ft).


    Object Number: 59758 Size: SH
  3. Install the hoses and the clamps to the fuel filter assembly.

    4. Object Number: 59759 Size: SH
  4. Install the fuel filter assembly and the engine wiring harness bracket.

    5. Tighten
    Tighten the fuel filter mount bolts to 42 N·m (31 lb ft).

  5. If equipped, install the upper intake manifold. Refer to Intake Manifold Installation (Upper-L65)