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Home >> Isuzu >> 2007 >> Ascender RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 274 (Automatic Transmission - 4L60-E/4L65-E/4L70-E - Removal & Installation, Service, Overhaul, Troubleshooting & Diagnosis) >> Repair Instructions - On Vehicle >> Transmission Replacement (LL8) >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2008 Isuzu Ascender, 2008 GMC Envoy, and 2008 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install the J 21366  onto the transmission bell housing to retain the torque converter. See Special Tools .
  2. Raise the transmission into place and remove the J 21366  from the transmission. See Special Tools .
    3. Fig 1: View Of Bell Housing Bolts
    GM727330Courtesy of GENERAL MOTORS CORP.
  3. Slide the transmission straight onto the locating pins while lining up the marks on the flywheel and the torque converter made during removal. The torque converter must be flush onto the flywheel and rotate freely by hand.
    4. NOTE: Refer to Fastener Notice .
  4. Install nuts, studs and/or bolts securing the transmission to the engine.

    Tighten:  Tighten the studs and/or bolts to 50 N.m (37 lb ft).

    5. Fig 2: View Of Torque Converter Access Plug
    GM744183Courtesy of GENERAL MOTORS CORP.
  5. Install the flywheel to torque converter bolts. Use care not to drop the bolts into the bell housing.

    Tighten:  Tighten the bolts to 60 N.m (44 lb ft).

  6. Install the torque converter access plug.
  7. Remove the safety chain from the transmission.
    8. Fig 3: View Of Fuel Line Bracket To Left Side Of Transmission Bolt (LL8)
    GM730721Courtesy of GENERAL MOTORS CORP.
  8. Install the bolts (2, 3) that secure the fuel line brackets to the left side of the transmission.

    Tighten: 

    • Tighten bolt (3) to 10 N.m (89 lb in).
    • Tighten bolt (2) to 45 N.m (33 lb ft).

    9. Fig 4: View Of Transmission Harness 20-Way Connector
    GM173661Courtesy of GENERAL MOTORS CORP.
  9. Connect the main electrical connector to the transmission.
  10. Connect the park/neutral position switch connector. Refer to Park/Neutral Position Switch Replacement .
    11. Fig 5: View Of Transmission Vent Hose (LL8)
    GM744644Courtesy of GENERAL MOTORS CORP.
  11. Connect the transmission vent hose (2) to the transmission.
  12. Install the transmission heat shield. Refer to Transmission Heat Shield Replacement .
    13. Fig 6: Identifying Range Selector Cable & Components
    GM744174Courtesy of GENERAL MOTORS CORP.
  13. Install the range selector cable end to the transmission range selector ball stud (6) and the bracket (1). Refer to Range Selector Lever Cable Replacement .
  14. Raise the transmission to the normal installed height.
    15. Fig 7: View Of Catalytic Converter Assembly
    GM753684Courtesy of GENERAL MOTORS CORP.
  15. Install the catalytic converter assembly. Refer to Catalytic Converter Replacement (LL8) or Catalytic Converter Replacement (LH6/LS2) .
    16. Fig 8: View Of Transmission Mount To Exhaust Hanger Mounting Bolts
    GM1334965Courtesy of GENERAL MOTORS CORP.
  16. Install the transmission mount. Refer to Transmission Mount Replacement (4.2L)  or Transmission Mount Replacement (5.3L) .
    17. Fig 9: View Of Transmission Crossmember Support
    GM752134Courtesy of GENERAL MOTORS CORP.
  17. Install the transmission support. Refer to Transmission Support Replacement .
  18. Remove the transmission jack.
  19. Install the fuel tank shield if equipped. Refer to Fuel Tank Shield Replacement .
  20. If equipped with 4WD install the transfer case. Refer to Transfer Case Assembly Replacement (TrailBlazer, Envoy) .
  21. If equipped with 2WD install the rear propeller shaft. Refer to Rear Propeller Shaft Replacement .
    22. Fig 10: View Of Oil Cooler Lines
    GM744636Courtesy of GENERAL MOTORS CORP.
  22. Flush the transmission oil cooler and cooling lines at this time, if necessary. Refer to Transmission Fluid Cooler Flushing and Flow Test (J 45096)  or Transmission Fluid Cooler Flushing and Flow Test (J 35944-A) .
  23. Connect the transmission oil cooler lines (4) to the transmission. Refer to Transmission Fluid Cooler Hose/Pipe Replacement (Body VIN Code 6 LM4) .
  24. Lower the vehicle.
    25. Fig 11: View Of Filler Tube, Nut & Stud
    GM744648Courtesy of GENERAL MOTORS CORP.
  25. Install the filler tube to the stud (1) on the right side of the engine.
  26. Install the filler tube nut (2).

    Tighten:  Tighten the nut to 10 N.m (7 lb ft).

  27. Connect the battery. Refer to Battery Negative Cable Disconnection and Connection .
  28. Fill the transmission to the proper level with DEXRON® VI transmission fluid and check for leaks. Refer to Transmission Fluid Check .
    29. IMPORTANT: It is recommended that transmission adaptive pressure (TAP) information be reset.
    Resetting the TAP values using a scan tool will erase all learned values in all cells. As a result, the engine control module (ECM), powertrain control module (PCM) or transmission control module (TCM) will need to relearn TAP values. Transmission performance may be affected as new TAP values are learned.
  29. Reset the TAP values. Refer to Transmission Adaptive Functions (TCM) .
  30. Road test the vehicle and check for proper operation.
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