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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1311 (TRANSFER CASE - NVG 246-NP8 (TWO 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 Yukon XL, 2002 GMC Yukon, 2002 Chevrolet Tahoe, 2002 Chevrolet Suburban, and 2002 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Transfer Case & Case Adapter
    GM715726Courtesy of GENERAL MOTORS CORP.
  1. Raise the vehicle. Refer to LIFTING AND JACKING THE VEHICLE in General Information.
  2. Remove the transfer case assembly. Refer to Transfer Case Assembly Replacement .
  3. Support the transmission with a suitable jack stand.
    4. Fig 2: Identifying Transmission Mount Nuts
    GM647997Courtesy of GENERAL MOTORS CORP.
  4. Remove the transmission mount retaining nuts.
  5. Raise the transmission assembly just high enough to remove the transmission mount.
    6. Fig 3: Identifying Crossmember & Bolts
    GM652595Courtesy of GENERAL MOTORS CORP.
  6. Remove the transmission support mounting bolts.
  7. Remove the transmission support from the frame.
    8. Fig 4: Locating Transmission Mount
    GM715661Courtesy of GENERAL MOTORS CORP.
  8. Remove the transmission mount bolts.
    9. Fig 5: View Of Transmission Mount
    GM648001Courtesy 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. Fig 6: View Of Transfer Case Adapter, Bolts & Seal
    GM652614Courtesy of GENERAL MOTORS CORP.
  11. Remove the transfer case adapter mounting bolts.
  12. Remove the transfer case adapter.
  13. Remove the transfer case seal.
    14. Fig 7: View Of Transfer Case Gasket
    GM654219Courtesy of GENERAL MOTORS CORP.
  14. Remove the transfer case gasket.
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.