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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1917 (REAR DRIVE AXLE)REPAIR INSTRUCTIONSDIFFERENTIAL REPLACEMENTREMOVAL 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. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  2. Drain the rear differential, if needed. Refer to Differential Oil Replacement .
  3. Remove the exhaust system. Refer to Exhaust Muffler Replacement (LAT or LE5) or Exhaust Muffler Replacement (LZ4) or Exhaust Muffler Replacement (LY7) or Exhaust Muffler Replacement (LCS) .
  4. Remove the rear wheel drive shafts. Refer to Rear Wheel Drive Shaft Replacement .
  5. Remove the propeller shaft from the vehicle. Refer to Propeller Shaft Replacement .
  6. Support the rear differential with a transmission jack stand.
    7. Fig 1: Identifying Rear Differential Support Bushing Bolts
    GM1759193Courtesy of GENERAL MOTORS CORP.
  7. Remove the rear differential support bushing bolts.
    8. Fig 2: View Of Rear Differential Mounting Nuts
    GM1759189Courtesy of GENERAL MOTORS CORP.
  8. Remove the front mounting nuts for the rear differential (3).
  9. Lower the rear differential to gain access rear differential clutch control module.
  10. Remove the small electrical connector from the control module (1).
  11. Remove the large electrical connector from the control module (2).
    12. Fig 3: View Of Differential Assembly
    GM1759196Courtesy of GENERAL MOTORS CORP.
  12. Remove the rear differential assembly from the vehicle.
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.