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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1859 (BATTERY, CHARGING SYSTEM AND STARTING SYSTEM)REPAIR INSTRUCTIONSSTARTER REPLACEMENT (LY7)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 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
  1. Disconnect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection .
  2. Remove the left side catalytic convertor. Refer to Catalytic Converter Replacement - Left Side (LZ4) or Catalytic Converter Replacement - Left Side (LY7 ) or Catalytic Converter Replacement - Left Side (LCS) .
    3. Fig 1: Identifying Starter Motor BAT Terminal Nut (LY7)
    GM1394041Courtesy of GENERAL MOTORS CORP.
  3. Disconnect the starter motor electrical connector.
    4. Fig 2: View Of Positive Battery Cable Terminal At Starter
    GM1644827Courtesy of GENERAL MOTORS CORP.
  4. Remove the starter solenoid BAT terminal nut.
  5. Remove the battery positive cable terminal and engine harness terminal from the starter motor.
    6. Fig 3: Locating Starter Motor & Bolts (LY7)
    GM1394040Courtesy of GENERAL MOTORS CORP.
  6. Remove the starter motor bolts.
  7. Remove the starter motor from the vehicle.
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.