GM Service Manual Online
For 1990-2009 cars only

Auxiliary Generator Replacement 6.6L

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: 1874251  Size: SH
  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
  2. Remove the drive belt. Refer to Drive Belt Replacement .
  3. Disconnect the engine wiring harness electrical connector (1) from the generator.
  4. Reposition the engine wiring harness boot (4) in order to access the terminal stud.
  5. Remove the engine wiring harness nut (3).
  6. Remove the engine wiring harness terminal (2) from the generator.

  7. Object Number: 1874252  Size: SH
  8. Remove the generator bolts (1).
  9. Remove the generator.

Installation Procedure

    Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1874252  Size: SH
  1. Install the generator.
  2. Install the generator bolts (1).
  3. Tighten
    Tighten the bolts to 50 N·m (37 lb ft).


    Object Number: 1874251  Size: SH
  4. Install the engine wiring harness terminal (2) to the generator.
  5. Install the engine wiring harness nut (3).
  6. Tighten
    Tighten the nut to 9 N·m (80 lb in).

  7. Position the engine wiring harness boot (4) in order to cover the terminal stud.
  8. Connect the engine wiring harness electrical connector (1) to the generator.
  9. Install the drive belt. Refer to Drive Belt Replacement .
  10. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .