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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 978 (BATTERY, CHARGING SYSTEM & STARTING SYSTEM)REPAIR INSTRUCTIONSGENERATOR REPLACEMENT - AUXILIARY (6.6L (LLY) ENGINE)INSTALLATION PROCEDURE
2003 Chevrolet TrailBlazer 4.2 S, 4WD

Installation Procedure

2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Installation Procedure
WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install the auxiliary generator (4).
    NOTE: Refer to Fastener Notice in Cautions and Notices.
  2. Install the auxiliary generator bolts (3).

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

    3. Fig 1: View Of Auxiliary Generator & Bolts
    GM1369547Courtesy of GENERAL MOTORS CORP.
  3. Install the positive cable to the auxiliary generator, perform the following:
    1. Install the positive cable.
    2. Install the positive cable nut (1).

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

    3. Slide the boot (4) up to cover the terminal stud.
    4. Fig 2: View Of Positive Cable At Auxiliary Generator
    GM1369548Courtesy of GENERAL MOTORS CORP.
  4. Install the drive belt. Refer to Drive Belt Replacement in Engine Mechanical - 6.6L (LLY).
  5. Connect the auxiliary generator electrical connector (3).
    6. Fig 3: View Of A/C & Generator Electrical Connectors
    GM1369550Courtesy of GENERAL MOTORS CORP.
  6. Connect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure (Single Battery)  or Battery Negative Cable Disconnect/Connect Procedure (Auxiliary Battery) .
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.