GM Service Manual Online
For 1990-2009 cars only

Tools Required

    • J 44014 Torque Converter Bolt Magnetic Socket
    • J 42098 V6 Crankshaft Bolt Socket
    • J 43405 Engine Support Fixture Adapter
    •  SA9105E Engine Support Bar Assembly

Removal Procedure


    Object Number: 886658  Size: SH

    Caution: Ensure that the vehicle is properly supported and squarely positioned. To help avoid personal injury when a vehicle is on a hoist, provide additional support for the vehicle on the opposite end from which the components are being removed.

  1. Position the vehicle on a hoist.
  2. Remove the battery. Refer to Battery Replacement .

  3. Object Number: 886877  Size: SH
  4. Disconnect the underhood fuse block (UHFB). Refer to Underhood Electrical Center or Junction Block Replacement.

  5. Object Number: 886646  Size: SH
  6. Remove the battery tray fasteners and battery tray.

  7. Object Number: 893248  Size: SH
  8. Remove the Transaxle Electrical connector and ground strap.
  9. Important: One of the wiring harness mounting brackets on the L81 (V6) engine is fastened behind an engine-to-transaxle mounting bolt. This bracket cannot be removed at this point. It will be removed prior to engine/transaxle separation.

  10. Remove the remaining wiring harness attachment from the transaxle.

  11. Object Number: 893893  Size: SH
  12. Disconnect the control cable from the transaxle range switch lever with a screwdriver.
  13. Remove the control cable bracket from the rear powertrain mount. Tie the cable and bracket to the dash panel.

  14. Object Number: 893897  Size: SH
  15. Remove the transaxle range switch electrical connector.
  16. Remove the upper engine-to-transaxle mounting bolts.

  17. Object Number: 894336  Size: SH
  18. Remove the accessory drive belt from the generator. There is no need to remove the belt (L81 [V6] only).

  19. Object Number: 896418  Size: SH
  20. Remove the accessory drive belt tensioner assembly (81 [V6] only).

  21. Object Number: 895788  Size: SH
  22. Remove the generator (L81 [V6] only).

  23. Object Number: 893903  Size: SH
  24. Disconnect the output speed sensor electrical connector. Remove the harness from the mounting stud.

  25. Object Number: 893249  Size: SH
  26. Install the SA9105E with J 43405 as shown for L61 L4.

  27. Object Number: 893254  Size: SH
  28. Install the SA9105E with J 43405 as shown for L81 V6.
  29. Remove the frame assembly. Refer to Frame Replacement in Frame.

  30. Object Number: 891575  Size: SH

    Notice: To prevent damage to CV Joint boots, be careful not to allow them to contact other parts during the removal/installation process. Also, never pull on the shaft assembly.

  31. Use a pry bar to remove the axle shafts from the transaxle. Leave axle shafts in the steering knuckles and secure the axle shafts up and out of the way of the transaxle removal path.

  32. Object Number: 893258  Size: SH
  33. Remove the engine-to-transaxle bracket. (L4 shown, V6 similar).

  34. Object Number: 895774  Size: SH
  35. Remove the starter solenoid electrical connections.
  36. Important: To gain access to V6 starter assembly mounting bolts, the wiring harness mounting bracket on the rear of the engine block must be removed.

  37. Remove the starter motor. (V6 shown, L4 similar)

  38. Object Number: 897507  Size: SH

    Important: The V6 flexplate has 6 bolts, 3 of these connect the flexplate to the torque converter and are recessed in the plate. The 4 cylinder flexplate has only 3 bolts and all reused to connect the flexplate to the torque converter.

  39. Use J 44014 to remove the flexplate to torque converter bolts through starter opening in the engine block. TORX® V6 J 42098 can be used to turn the V6 crankshaft.

  40. Object Number: 893244  Size: SH
  41. Remove the transaxle oil cooler line assembly from the transaxle.
  42. Remove the lower two engine to transaxle mounting bolts.
  43. Lower the vehicle.

  44. Object Number: 891639  Size: SH
  45. Mark the position of and remove the left transaxle mount bolts.
  46. Raise the vehicle.
  47. Slide the hydraulic lift table under the transaxle.
  48. Lower the vehicle slowly until transaxle is on the hydraulic lift table. Place a wood block between barrel of transaxle and surface of table.
  49. Remove the remaining engine-to-transaxle mounting bolts.
  50. Slide the transaxle away from the engine assembly and raise vehicle away from the transaxle. (V6 shown, L4 similar)

Installation Procedure

  1. Place the transaxle on a hydraulic lift table and position the table under the vehicle.
  2. Slowly lower the vehicle and position the transaxle to the engine.
  3. Notice: Refer to Fastener Notice in the Preface section.

    Important: The bottom 2 and top 3 engine-to-transaxle mounting bolts will be installed later in this procedure.

    Important: Ensure that the wiring harness bracket is installed behind the engine-to-transaxle mounting bolt near the starter motor on the V6 engine.

  4. Install the engine-to-transaxle mounting bolts as shown. V6 shown, L4 similar.
  5. Tighten
    Tighten engine-to-transaxle bolts to 65 N·m (48 lb ft).

  6. Raise the vehicle and remove the hydraulic lift table.
  7. Lower the vehicle.

  8. Object Number: 891639  Size: SH

    Notice: If the powertrain mount is not reinstalled in its original position, it could lead to premature mount wear.

  9. Reference the alignment marks made during disassembly and install the left transaxle mount bolts.
  10. Tighten
    Tighten the transaxle mount (left)-to-transaxle mount bracket bolts to 55 N·m (41 lb ft).

  11. Raise the vehicle.
  12. Install the 2 bottom engine-to-transaxle mounting bolts.

  13. Object Number: 893244  Size: SH

    Notice: Failure to lubricate the cooler line seals with automatic transaxle fluid DEXRON® III before installing into the case or before installing the cooler line pipes into the seals may cause damage to the seal.

  14. Install the transaxle oil cooler line assembly to the transaxle.
  15. Tighten
    Tighten the transaxle oil cooler line assembly nut to 8 N·m (71 lb in).


    Object Number: 897507  Size: SH
  16. Loosely install the flex plate to torque converter bolts using the J 44014 through the starter opening. The J 42098 can be used to turn the V6 crankshaft. After all bolts are installed, torque to specification.
  17. Important: The J 44014 must be used to install the flex plate to torque converter bolts. Care must be taken not to drop the bolts inside the torque converter housing of the transaxle. If a bolt is dropped inside the housing, the transaxle must be separated from the engine to retrieve it.

    Tighten
    Tighten the flex plate-to-torque converter bolts to 45 N·m (33 lb ft).


    Object Number: 895774  Size: SH
  18. Install the starter assembly. V6 shown, L4 similar.
  19. Tighten
    Tighten the starter assembly bolts to 40 N·m (30 lb ft).

  20. Connect the starter solenoid electrical connections.
  21. Install the wire harness mounting bracket to the rear of the engine block. V6 only.

  22. Object Number: 893258  Size: SH
  23. Install the engine-to-transaxle bracket. L4 shown, V6 similar.
  24. Tighten
    Tighten the engine-to-transaxle bracket bolts to 35 N·m (26 lb ft).

    Notice: In order to prevent damage to the axle shaft splines during vehicle operation, add grease P/N 7843867 to the splines prior to installing the axle shafts.

  25. Install the new axle shaft retaining rings on the end of the output shafts of the transaxle and install the axle shafts into the transaxle.
  26. Install the frame assembly. Refer to Frame Replacement Front in Frame and Underbody.
  27. Lower the vehicle and remove the engine support fixture.

  28. Object Number: 893903  Size: SH
  29. Connect the output speed sensor electrical connector. Secure the harness to the mounting stud.

  30. Object Number: 895788  Size: SH
  31. Install the generator for V6 only.
  32. Tighten
    Tighten the generator bolts to 40 N·m (30 lb ft).


    Object Number: 896418  Size: SH
  33. Install the accessory drive belt tensioner assembly for V6 only.
  34. Tighten
    Tighten the accessory drive belt tension assembly bolts to 40 N·m (30 lb ft).


    Object Number: 894336  Size: SH
  35. Install the accessory drive belt for V6 only.
  36. Install the remaining transaxle-to-engine mounting bolts.
  37. Tighten
    Tighten the engine-transaxle bolts to 65 N·m (48 lb ft).


    Object Number: 893248  Size: SH
  38. Install the transaxle electrical connector and ground wire to the transaxle.
  39. Tighten
    Tighten the ground wire bolt to 25 N·m (18 lb ft).

  40. Install the remaining wire harness attachments to the transaxle side cover.
  41. Tighten
    Tighten the wiring harness attachment fasteners to 20 N·m (15 lb ft).


    Object Number: 893893  Size: SH
  42. Install the control cable mounting bracket to the rear powertrain mount.
  43. Tighten
    Tighten the control cable mounting bracket bolts to 20 N·m (15 lb ft).

  44. Connect the control cable to the transaxle range switch lever.

  45. Object Number: 886646  Size: SH
  46. Install the battery tray and battery tray fasteners.
  47. Tighten
    Tighten the battery tray bolts to 15 N·m (11 lb ft).


    Object Number: 886877  Size: SH
  48. Install the underhood fuse block case to the battery tray and install the bolt.
  49. Tighten
    Tighten the underhood fuse block case bolt to 9 N·m (80 lb in).


    Object Number: 886874  Size: SH
  50. Install the wire harnesses to the fuse block case. The wire harness grommets have retaining tabs that lock into the case when the harnesses are fully installed.
  51. • Engine (A)
    • Forward Lamp (B)
    • Instrument Panel (I/P) (C)
  52. Snap the fuse block onto the fuse block case hinges.
  53. Install the following connectors to the underhood fuse block:
  54. • Engine 68-way (1)
    • Forward Lamp 68-way (2)
    • I/P 68-way (3)

    Object Number: 886875  Size: SH
  55. Install the following connectors to the underhood fuse block:
  56. • Forward Lamp 2-way (White) (4)
    • I/P 2-way (Black) (5)
    • I/P 2-way (Green) (6)
    • I/P 2-way (Brown) (7)

    Object Number: 886875  Size: SH
  57. Secure the underhood fuse block to the fuse block case by rotating down and snapping into place.
  58. Install the underhood fuse block cover.
  59. Secure the coolant hose into place on the fuse block cover.
  60. Install the battery feed cable to underhood fuse block.
  61. Tighten
    Tighten the battery feed cable-to-underhood fuse block bolt to 16 N·m (12 lb ft).


    Object Number: 886658  Size: SH
  62. Install the battery.
  63. 37.1. Install the battery into the battery tray.
    37.2. Install the battery hold-down bracket.

    Tighten
    Tighten the battery hold down bracket bolt to 20 N·m (15 lb ft).

    37.3. Install the fan control module by sliding down onto the battery hold-down bracket.

            Important: The positive battery terminal must be connected first to prevent arcing.

    37.4. Install the positive battery cable and then the negative battery cable.

    Tighten
    Tighten the battery cables-to-battery to 17 N·m (13 lb ft).

    Important: If a new transaxle assembly was installed, the transaxle was filled with the proper amount of transaxle fluid at the factory. No additional fluid is required.

  64. Fill the transaxle assembly to the specified refill capacity using DEXRON® VI automatic transaxle fluid P/N 21019223 or equivalent.
  65. Specification

        • The bottom pan removal capacity is approximately 6.5 L (6.9 qt).
        • The complete overhaul capacity is approximately 9 L (9.5 qt).
        • The dry capacity is approximately 12.2 L (12.9 qt).
  66. Start the engine, warm up the transaxle, and check for fluid leaks.
  67. Inspect for proper fluid level. Refer to Transmission Fluid Check Procedure.
  68. 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 ECM, PCM or TCM will need to relearn TAP values. Transmission performance may be affected as new TAP values are learned.

  69. Reset the TAP values. Refer to Transmission Adaptive Functions .