GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2004 🢒 GMC C Sierra - 2WD 🢒 Engine 🢒 Engine Mechanical - 6.6L (LLY) 🢒 Generator Bracket Replacement

Generator Bracket Replacement 4.3L Engine

Removal Procedure

    Object Number: 360851 Size: SH
  1. Loosen the air cleaner outlet duct clamp at the mass air flow/intake air temperature (MAF/IAT) sensor.

    2. Object Number: 701705 Size: SH
  2. Remove the positive crankcase ventilation (PCV) hose.

    3. Object Number: 489179 Size: SH
  3. Remove the air cleaner adapter nut.

    4. Object Number: 489176 Size: SH
  4. In order to remove the air cleaner outlet duct, pivot the duct upward until the hinge clip releases from the lip on the throttle body.
  5. Remove the cooling fan. Refer to Fan Replacement in Engine Cooling.
  6. Remove the drive belt. Refer to Drive Belt Replacement in Engine Mechanical - 4.3L.

    7. Object Number: 334162 Size: SH
  7. Remove the wiring harness bracket bolt.

    8. Object Number: 316440 Size: SH
  8. Remove the heater hose bracket bolt.
  9. Remove the generator. Refer to Generator Replacement .
  10. Remove the drive belt tensioner. Refer to Drive Belt Tensioner Replacement in Engine Mechanical - 4.3L.
  11. Remove the drive belt idler pulley. Refer to Drive Belt Idler Pulley Replacement - Right Side or Drive Belt Idler Pulley Replacement - without Air Conditioning in Engine Mechanical - 4.3L.

    12. Object Number: 196643 Size: SH
  12. Remove the generator bracket bolts and nut.
  13. Remove the generator bracket.

Installation Procedure

    Object Number: 196643 Size: SH
  1. Install the generator bracket.

    2. 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 generator bracket bolts and nut.

    3. Tighten
    Tighten the bolts/nut to 41 N·m (30 lb ft).

  3. Install the drive belt idler pulley. Refer to Drive Belt Idler Pulley Replacement - Right Side or Drive Belt Idler Pulley Replacement - without Air Conditioning in Engine Mechanical - 4.3L.
  4. Install the drive belt tensioner. Refer to Drive Belt Tensioner Replacement in Engine Mechanical - 4.3L.
  5. Install the generator. Refer to Generator Replacement .

    6. Object Number: 316440 Size: SH
  6. Install the heater hose bracket bolt.

    7. Tighten
    Tighten the bolt to 25 N·m (18 lb ft).


    Object Number: 334162 Size: SH
  7. Install the wiring harness bracket bolt.

    8. Tighten
    Tighten the bolt to 25 N·m (18 lb ft).

  8. Install the cooling fan. Refer to Fan Replacement in Engine Cooling.
  9. Install the drive belt. Refer to Drive Belt Replacement in Engine Mechanical - 4.3L.

    10. Object Number: 489176 Size: SH
  10. Align the hinge clip with the lip on the throttle body.

    11. In order to install the air cleaner outlet duct, pivot the air cleaner outlet duct downward until the mounting stud is through the hole.


    Object Number: 489179 Size: SH
  11. Install the air cleaner adapter nut.

    12. Object Number: 701705 Size: SH
  12. Install the PCV hose.

    13. Object Number: 360851 Size: SH
  13. Tighten the air cleaner outlet duct clamp at the MAF/IAT sensor.

    14. Tighten
    Tighten the clamp to 4 N·m (35 lb in).

Generator Bracket Replacement 4.8L, 5.3L, and 6.0L Engines

Removal Procedure

    Object Number: 759636 Size: SH
  1. Remove the battery cable junction block bracket bolts.

    2. Object Number: 847280 Size: SH
  2. Remove the generator. Refer to Generator Replacement .
  3. Remove the power steering pump. Refer to Power Steering Pump Replacement .
  4. Remove the generator bracket bolts.
  5. Remove the generator bracket.

Installation Procedure

    Object Number: 847280 Size: SH
  1. Install the generator bracket.

    2. 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 generator bracket bolts.

    3. Tighten
    Tighten the bolts to 50 N·m (37 lb ft).

  3. Install the power steering pump. Refer to Power Steering Pump Replacement .
  4. Install the generator. Refer to Generator Replacement .

    5. Object Number: 759636 Size: SH
  5. Install the battery cable junction block bracket bolts.

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

Generator Bracket Replacement 8.1L Engine

Removal Procedure

    Object Number: 759640 Size: SH
  1. Remove the battery cable junction block bracket bolts.

    2. Object Number: 751458 Size: SH
  2. Remove the fan and clutch. Refer to Fan Clutch Replacement .
  3. Remove the drive belt idler pulley. Refer to Drive Belt Idler Pulley Replacement

    4. .

  4. Remove the generator. Refer to Generator Replacement .
  5. Remove the generator bracket bolts and nut.
  6. Remove the generator bracket stud.
  7. Remove the generator bracket.

Installation Procedure

    Object Number: 751458 Size: SH
  1. Install the generator bracket.

    2. 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 generator bracket stud.

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

  3. Install the generator bracket bolts and nut.

    4. Tighten
    Tighten the bolts and nut to 50 N·m (37 lb ft).

  4. Install the generator. Refer to Generator Replacement .
  5. Install the drive belt idler pulley. Refer to Drive Belt Idler Pulley Replacement .
  6. Install the fan and clutch. Refer to Fan Clutch Replacement .

    7. Object Number: 759640 Size: SH
  7. Install the battery cable junction block bracket bolts.

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

Generator Bracket Replacement 6.6L (LB7) Engine

Removal Procedure

    Object Number: 665386 Size: SH
  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
  2. Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls - 6.6L.
  3. Remove the drive belt. Refer to Drive Belt Replacement in Engine Mechanical - 6.6L.
  4. Remove the upper fan shroud. Refer to Engine Coolant Fan Upper Shroud Replacement in Engine Cooling.
  5. Remove the outlet heater hose bracket bolt (2).

    6. Object Number: 660347 Size: SH
  6. Remove the generator bolts and reposition the generator aside. The electrical connections can remain attached to the generator.

    7. Object Number: 798945 Size: SH
  7. Remove the right idler pulley bolt and pulley.
  8. Remove the left idler pulley bolt and pulley.
  9. Remove the drive belt tensioner bolt and tensioner.

    10. Object Number: 698198 Size: SH
  10. Remove the fuel bleed valve nuts and valve.
  11. Reposition the oil separator hose clamp at the side of the generator bracket.
  12. Remove the oil separator hose from the pipe.

    13. Object Number: 788902 Size: SH
  13. If equipped, remove the vacuum line from the exhaust gas recirculation (EGR) valve vacuum pump.

    14. Object Number: 788903 Size: SH
  14. If equipped, remove the EGR vacuum pump bolts (1, 2). Reposition the vacuum pump.
  15. Reposition the oil separator hose clamp at the bottom of the generator bracket.
  16. Remove the oil separator hose from the bracket.

    17. Object Number: 798876 Size: SH
  17. Remove the generator bracket bolts.
  18. Remove the generator bracket.

Installation Procedure

    Object Number: 798876 Size: SH
  1. Install the generator bracket.

    2. 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 generator bracket bolts.

    3. Tighten
    Tighten the bolts to 50 N·m (37 lb ft).


    Object Number: 788903 Size: SH
  3. Install the oil separator hose to the bracket.
  4. Position the oil separator hose clamp at the bottom of the generator bracket.
  5. If equipped, position the vacuum pump. Install the EGR vacuum pump bolts (1, 2).

    6. Tighten
    Tighten the bolts to 22 N·m (16 lb ft).


    Object Number: 788902 Size: SH
  6. If equipped, install the vacuum line to the EGR valve vacuum pump.

    7. Object Number: 698198 Size: SH
  7. Install the oil separator hose to the pipe.
  8. Position the oil separator hose clamp at the side of the generator bracket.
  9. Install the fuel bleed valve and nuts.

    10. Tighten
    Tighten the nuts to 25 N·m (18 lb ft).


    Object Number: 798945 Size: SH
  10. Install the drive belt tensioner and bolt. Align the pin on the tensioner with the hole in the bracket.

    11. Tighten
    Tighten the bolt to 41 N·m (30 lb ft).

  11. Install the left idler pulley and bolt.
  12. Install the right idler pulley and bolt.

    13. Tighten
    Tighten the bolts to 43 N·m (32 lb ft).


    Object Number: 660347 Size: SH
  13. Position the generator and install the bolts.

    14. Tighten
    Tighten the bolts to 50 N·m (37 lb ft).


    Object Number: 665386 Size: SH
  14. Install the outlet heater hose bracket bolt (2).

    15. Tighten
    Tighten the bolt to 25 N·m (18 lb ft).

  15. Install the upper fan shroud. Refer to Engine Coolant Fan Upper Shroud Replacement in Engine Cooling.
  16. Install the drive belt. Refer to Drive Belt Replacement in Engine Mechanical - 6.6L.
  17. Install the air cleaner assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls - 6.6L.
  18. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .

Generator Bracket Replacement 6.6L (LLY) Engine

Removal Procedure

Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.


    Object Number: 1334907 Size: SH
  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
  2. Remove the air cleaner. Refer to Air Cleaner Assembly Replacement in Engine Controls - 6.6L (LLY).
  3. Remove the drive belt. Refer to Drive Belt Replacement in Engine Mechanical - 6.6L (LLY).
  4. Remove the upper fan shroud. Refer to Engine Coolant Fan Upper Shroud Replacement in Engine Cooling.
  5. Remove the electrical harness clip bolts.

    6. Object Number: 1369550 Size: SH
  6. Disconnect the generator electrical connector (1).

    7. Object Number: 395686 Size: SH
  7. Remove the positive battery cable from the generator, perform the following:
    8. 7.1. Slide the boot (3) down to access the terminal stud.
    7.2. Remove the positive cable nut (2).
    7.3. Remove the positive cable.

    Object Number: 1334909 Size: SH
  8. Remove the drive belt tensioner bolt.

    9. Object Number: 1334912 Size: SH
  9. Remove the generator mounting bracket bolts.
  10. Remove the generator mounting bracket.
  11. If necessary, remove the idler pulleys.

Installation Procedure

    Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1334912 Size: SH
  1. If necessary, install the idler pulleys.

    2. Tighten
    Tighten the bolts to 50 N·m (37 lb ft).

  2. Install the generator mounting bracket.
  3. Install the generator mounting bracket bolts.

    4. Tighten
    Tighten the bolts to 50 N·m (37 lb ft).


    Object Number: 1334909 Size: SH
  4. Install the drive belt tensioner bolt.

    5. Tighten
    Tighten the bolt to 50 N·m (37 lb ft).


    Object Number: 395686 Size: SH
  5. Install the positive battery cable to the generator, perform the following:
    6. 5.1. Install the positive cable.
    5.2. Install the positive cable nut (2).

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

    5.3. Slide the boot (3) up to cover the terminal stud.

    Object Number: 1369550 Size: SH
  6. Connect the generator electrical connector (1).

    7. Object Number: 1334907 Size: SH
  7. Install the electrical harness clip bolts.

    8. Tighten
    Tighten the bolts to 10 N·m (89 lb in).

  8. Install the upper fan shroud. Refer to Engine Coolant Fan Upper Shroud Replacement in Engine Cooling.
  9. Install the drive belt. Refer to Drive Belt Replacement in Engine Mechanical - 6.6L (LLY).
  10. Install the air cleaner. Refer to Air Cleaner Assembly Replacement in Engine Controls - 6.6L (LLY).
  11. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .