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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 660 (TRANSFER CASE - NVG 246-NP8 (2-SPEED AUTOMATIC))REPAIR INSTRUCTIONSTRANSFER CASE ADAPTER 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 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 Chevrolet Silverado, and 2002 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Raise the vehicle.
  2. Remove the transfer case assembly. Refer to Transfer Case Assembly Replacement .
  3. Support the transmission with a suitable jack stand.
  4. Remove the transmission mount retaining nuts.
  5. Raise the transmission assembly just high enough to remove the transmission mount.
    Fig 1: Transmission Mount Retaining Nuts
    G01668754Courtesy of GENERAL MOTORS CORP.
  6. Remove the transmission support mounting bolts.
  7. Remove the transmission support from the frame.
    Fig 2: Transmission Support
    G01668755Courtesy of GENERAL MOTORS CORP.
  8. Remove the transmission mount bolts.
    Fig 3: Transmission Mount Bolt
    G01668756Courtesy of GENERAL MOTORS CORP.
  9. Remove the transmission mount.
  10. Lower the transmission assembly slightly to gain access to the transfer case to the transmission bolts.
  11. Remove the transfer case adapter mounting bolts.
  12. Remove the transfer case adapter.
  13. Remove the transfer case seal.
    Fig 4: Transfer Case Seal
    G01668758Courtesy of GENERAL MOTORS CORP.
  14. Remove the transfer case gasket.
    Fig 5: Transfer Case Gasket
    G01668759Courtesy of GENERAL MOTORS CORP.
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.