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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 249 (AUTOMATIC TRANSAXLE REMOVAL & INSTALLATION)REMOVAL & INSTALLATIONTRANSAXLEREMOVAL
2003 Chevrolet TrailBlazer 4.2 S, 4WD

Removal & Installation: Transaxle: Removal

2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Removal
WARNING: This page is about a different car, the 2003 Chevrolet Malibu and 2002 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.
  1. Disconnect the negative (-) battery cable.
  2. Disconnect the air inlet duct hose from the intake plenum.
  3. Install the appropriate engine support fixture.
  4. Disconnect the transaxle wiring harness from the transaxle and the PNP switch.
  5. Remove the upper transaxle-to-engine bolts and stud. See Fig 1 .
    Fig 1: Identifying Transaxle-To-Engine Bolts
    G00182789Courtesy of GM
  6. Raise and support the vehicle.
  7. Remove the front wheel and tire assemblies.
  8. Remove the left front fender liner.
  9. Remove the front frame assembly.
  10. Remove the 2 bolts from the transaxle brace. See Fig 2 .
    Fig 2: Transaxle Brace Bolt Location
    G00182790Courtesy of GM
  11. Disconnect the shift cable from the shift linkage. See Fig 3 .
    Fig 3: Disconnecting Shift Cable From Shift Linkage
    G00182791Courtesy of GM
  12. Disconnect the shift cable from the bracket.
  13. Remove the flywheel inspection cover. See Fig 4 .
    Fig 4: Removing Flywheel Inspection Cover
    G00182792Courtesy of GM
  14. Remove the starter. See appropriate STARTERS article in ELECTRICAL.
  15. Mark the relationship of the flywheel to the torque converter for reassembly.
  16. Remove the torque converter-to-flywheel bolts. See Fig 5 .
    Fig 5: Identifying Torque Converter-To-Flywheel Bolt
    G00182793Courtesy of GM
  17. Remove the transaxle cooler lines by removing the nut holding the bracket to the transaxle case.
  18. Disconnect the VSS wiring harness from the sensor.
  19. Disconnect the wheel drive shafts from the transaxle. See appropriate AXLE SHAFTS article in DRIVELINE/AXLES.
  20. Lower the vehicle.
  21. Remove the body-to-transaxle mount bolts.
  22. Lower the transaxle with the engine support fixture enough to remove the transaxle.
  23. Raise the vehicle.
  24. Support the transaxle with a suitable jack.
  25. Remove the transaxle to engine nut. See Fig 1 .
  26. Separate the engine and the transaxle.
  27. Remove the transaxle from the vehicle.
  28. Remove the PNP switch.
  29. Remove the shifter cable bracket.
  30. Remove the lower transaxle-to-engine stud.
  31. Remove the transaxle mount.
  32. Flush the transaxle cooler and the lines with appropriate flushing equipment, whenever the transaxle has been removed for overhaul or replacement.
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.