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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1759 (BATTERY, CHARGING SYSTEM AND STARTING SYSTEM)REPAIR INSTRUCTIONSGENERATOR REPLACEMENT (3.5L (L66))REMOVAL PROCEDURE
2003 Chevrolet TrailBlazer 4.2 S, 4WD

Removal Procedure

2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Removal Procedure
WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
    IMPORTANT: Record all pre-set radio stations.
  1. Turn the ignition OFF.
  2. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection (2.2L (L61) and 3.5L (L66))  or Battery Negative Cable Disconnection and Connection (2.4L (LAT)) .
    3. Fig 1: View Of Generator (L66)
    GM1226453Courtesy of GENERAL MOTORS CORP.
  3. Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement .
  4. Remove the accessory drive belt tensioner. Refer to Drive Belt Tensioner Replacement .
  5. Install the engine support fixture. Refer to Engine Support Fixture .
  6. Remove the front of the engine mount throughbolt and raise the engine for proper clearance.
    7. Fig 2: View Of Generator Electrical Connectors
    GM1228610Courtesy of GENERAL MOTORS CORP.
  7. Disconnect the generator electrical connections.
    8. Fig 3: View Of Generator & Install The Top Bolts
    GM1237805Courtesy of GENERAL MOTORS CORP.
  8. Remove the generator to engine block bolts and the generator.
RENDER: 1.0x

NO RELATED

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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.