GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2004 🢒 TopKick C-Series (Conventional) C4/C5 🢒 Brakes 🢒 Air Brakes 🢒 Generator Bracket Replacement

Generator Bracket Replacement LG4

Removal Procedure
  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Replacement .
  2. Remove the generator. Refer to Generator Replacement .
  3. If equipped, remove the air conditioning compressor. Refer to Air Conditioning Compressor Replacement in Heating, Ventilation and Air Conditioning.

    4. Object Number: 801023 Size: SH
  4. Remove the accessory mounting bracket bolts.
  5. Remove the accessory mounting bracket.

Installation Procedure

    Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 801023 Size: SH
  1. Install the accessory mounting bracket.

    2. Tighten
    Tighten the accessory mounting bracket bolts to 39 N·m (29 lb ft).

  2. If equipped, install the air conditioning compressor. Refer to Air Conditioning Compressor Replacement in Heating, Ventilation and Air Conditioning.
  3. Install the generator. Refer to Generator Replacement .
  4. Connect the negative battery cable. Refer to Battery Negative Cable Replacement .

Generator Bracket Replacement LG5

Removal Procedure
  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
  2. Remove the drive belt. Refer to Caterpillar® 3126 Unit Repair Manual.
  3. Remove the air cleaner layer. Refer to Air Cleaner Replacement for the 7.1L (Caterpillar) engine.

    4. Object Number: 801056 Size: SH
  4. Remove the generator. Refer to Generator Replacement .
  5. Remove the generator bracket bolts.
  6. Remove the generator bracket.

Installation Procedure

    Object Number: 801056 Size: SH
  1. Install the generator bracket to the engine.

    2. Notice: Refer to Fastener Notice in the Preface section.

  2. Install the generator bracket bolts.

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

  3. Install the generator. Refer to Generator Replacement .
  4. Install the air cleaner layer. Refer to Air Cleaner Replacement for the 7.1L (Caterpillar) engine.
  5. Install the drive belt. Refer to Caterpillar® 3126 Unit Repair Manual.
  6. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .

Generator Bracket Replacement L18

Removal Procedure
  1. Remove the air cleaner layer. Refer to Air Cleaner Replacement .
  2. Remove the drive belt tensioner. Refer to Drive Belt Tensioner Replacement .
  3. Remove the drive belt idler pulley, if equipped. Refer to Drive Belt Idler Pulley Replacement
  4. Remove the generator. Refer to Generator Replacement .
  5. Remove the fan pulley bolts and pulley.

    6. Object Number: 742238 Size: SH
  6. Remove the generator bracket bolts and nut.
  7. Remove the generator bracket from the stud.

Installation Procedure

    Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 742238 Size: SH
  1. Slide the generator bracket onto the stud.
  2. Install the generator bracket bolts and nut.

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

  3. Install the fan pulley and bolts.

    4. Tighten
    Tighten the fan pulley bolts to 45 N·m (33 lb ft).

  4. Install the generator. Refer to Generator Replacement .
  5. Install the drive belt idler pulley, if equipped. Refer to Drive Belt Idler Pulley Replacement .
  6. Install the drive belt tensioner. Refer to Drive Belt Tensioner Replacement .
  7. Install the air cleaner layer. Refer to Air Cleaner Replacement .

Generator Bracket Replacement 6.6L (LB7)

Removal Procedure
  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
  2. Remove the air cleaner layer assembly. Refer to Air Cleaner Replacement in Engine Controls - 6.6L (LB7).
  3. Remove the drive belt. Refer to Drive Belt Replacement in Engine Mechanical - 6.6L (LB7).
  4. Remove the upper fan shroud. Refer to Fan Shroud Replacement in Engine Cooling.
  5. Remove the outlet heater hose bracket bolt.

    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. 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

    Notice: Refer to Fastener Notice in the Preface section.


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

    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).

  14. Install the outlet heater hose bracket bolt.

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

  15. Install the upper fan shroud. Refer to Fan Shroud Replacement in Engine Cooling.
  16. Install the drive belt. Refer to Drive Belt Replacement in Engine Mechanical - 6.6L (LB7).
  17. Install the air cleaner layer assembly. Refer to Air Cleaner Replacement in Engine Controls - 6.6L (LB7).
  18. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .

Generator Bracket Replacement 6.6L (LLY)

Removal Procedure

    Object Number: 1334907 Size: SH

    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.

  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
  2. Remove the air cleaner. Refer to Air Cleaner Replacement .
  3. Remove the drive belt. Refer to Drive Belt Replacement .
  4. Remove the upper fan shroud. Refer to Fan Shroud Replacement .
  5. Remove the electrical harness clip bolts.

    6. Object Number: 1395836 Size: SH
  6. Disconnect the generator electrical connector.
  7. Remove the positive battery cable from the generator, perform the following:
    8. 7.1. Slide the boot down to access the terminal stud.
    7.2. Remove the positive cable nut.
    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: 1395836 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.

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

    5.3. Slide the boot up to cover the terminal stud.
  6. Connect the generator electrical connector.

    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 Fan Shroud Replacement .
  9. Install the drive belt. Refer to Drive Belt Replacement .
  10. Install the air cleaner. Refer to Air Cleaner Replacement .
  11. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .