GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1999 🢒 GMC C-Series Medium Duty Truck B7 🢒 Engine 🢒 Engine Controls - 7.4L 🢒 Ignition Coil Replacement

Bank 2 Ignition Coil/Module(s) Removal Procedure

    Object Number: 213850 Size: SH
  1. Remove the coil near plug wire(s) (5,6,7,8) to the coil(s) (4,3,2,1).

    2. Object Number: 213881 Size: SH
  2. Remove the harness connector(s) (1), from the ignition coil/module(s) (3,4,5,6). If removing the harness from the vehicle, remove the bolts from the harness connector (7), to the valve cover (2).

    3. Object Number: 213859 Size: SH
  3. Remove the bolts from the ignition coil/module(s) (2).
  4. Remove the coil/module(s) (3,1,7,6) from the valve cover (4). If removing coil/module (6), remove the bracket to the Engine Coolant Temperature (ECT) sensor (5).

Bank 2 Coil/Module(s) Installation Procedure

    Object Number: 213859 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.

  1. Install the ignition coil/module(s) (3,1,7,6) to the valve cover (4). If installing coil/module (6), install the bracket to the Engine Coolant Temperature (ECT) sensor (5).
  2. Install the 2 bolts.

    3. Tighten
    Tighten the bolts to 12 N·m (9 lb ft).


    Object Number: 213881 Size: SH
  3. Install the harness connector(s) (1), to the ignition coil/module(s) (3,4,5,6). If installing the harness to the vehicle, install the bolts to the harness connector (7), to the valve cover (2).

    4. Tighten
    Tighten the bolts to 12 N·m (9 lb ft).


    Object Number: 213850 Size: SH
  4. Install the coil near plug wire(s) (5,6,7,8) to the coil/module(s) (4,3,2,1).

Bank 1 Ignition Coil(s) Removal Procedure

    Object Number: 213856 Size: SH
  1. Remove the coil near plug wire(s) (5,6,7,8) from the coil/module(s) (4,3,2,1).

    2. Object Number: 213876 Size: SH
  2. Remove the harness connector(s) (1), from the ignition coil/module(s) (2,3,4,5). If removing the harness from the vehicle, remove the bolts from the harness connector (7), to the valve cover (6).

    3. Object Number: 213861 Size: SH
  3. Remove the bolts from the ignition coil/module(s) (2).
  4. Remove the coil/module(s) (1,3,4,5) from the valve cover (6).

Bank 1 Coil(s) Installation Procedure

    Object Number: 213861 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.

  1. Install the coil/module(s) (1,3,4,5) to the valve cover (6).

    2. Tighten
    Tighten the bolts to 12 N·m (9 lb ft).


    Object Number: 213876 Size: SH
  2. Install the harness connector(s) (1), to the ignition coil/module(s) (2,3,4,5). If installing the harness to the vehicle, install the bolts to the harness connector (7), to the valve cover (6).

    3. Tighten
    Tighten the bolts to 12 N·m (9 lb ft).


    Object Number: 213856 Size: SH
  3. Install the coil near plug wire(s) (5,6,7,8) to the coil/module(s) (4,3,2,1).