Montana, Silhouette, Venture 2000-2005

Transaxle Removal & Installation

Print

The automatic transaxle can be removed only as an assembly with the engine and subframe. See the procedures under Engine Removal and Installation in the Engine Mechanical Section.

  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Remove or disconnect the following:

    Negative battery cable
     
    Position aside coolant recovery bottle
     
    Air cleaner assembly
     
    Automatic transmission range selector cable from the manual shaft
     
    Automatic transmission range selector cable bracket
     
    Wiring harness connector from the transaxle
     
    Wiring harness retainer from the side cover
     
    The top 4 bell housing bolts and stud

    Click image to see an enlarged view

    Fig. Remove the top four bell housing bolts and stud (4)

     

  4.  
  5. Install the engine support fixture.
    NOTE
    When removing the wheel, mark the location of the wheel to the hub prior to removal. Mark the individual location of all retainers as they are removed.


    NOTE
    It is NOT necessary to remove the catalytic converter pipe on FWD models.



    Front tires and wheels
     



    Front fender liner enough to gain access to the front frame bolts
     
    Both outer tie rod ends from the steering knuckles
     
    Stabilizer shaft
     
    Propeller shaft, if equipped with all wheel drive (AWD).
     



    Catalytic converter pipe, if equipped with AWD
     
    Power steering gear heat shield
     
    Power steering gear bolts and suspend steering gear from the frame
     
    Front engine splash shield
     
    Power steering cooler pipe from the frame, use mechanics wire to secure the power steering cooler line out of the way
     
    Front wheel speed sensor connectors
     
    Front wheel speed sensor wiring harnesses from the lower control arms
     
    Lower ball joints from the steering knuckles
     
    Engine mount nuts
     
    Transaxle mount nuts
     

  6.  
  7. Lower the vehicle. until the frame contacts the J 39580, or equivalent

    Frame front bolts
     
    Frame rear bolts
     
    Frame strap bolts and straps
     
    Raise the vehicle in order to separate the frame from the vehicle
     
    Torque converter inspection cover
     
    Torque converter bolts
     
    Vehicle speed sensor
     
    Right and left axle shafts from the transmission
     
    Transmission cooler lines
     
    Position the transmission jack under the transaxle
     
    Transaxle brace
     
    Lower transaxle bolt and stud
     
    Transaxle from the vehicle
     

  8.  

To install:

  1. Install or connect the following:
    WARNING
    Ensure that the power steering cooler line does not become trapped by the engine mount during this step



    Align the transaxle filler tube to the transmission and Install the transaxle into the vehicle.
     
    Lower transaxle bolt and stud and tighten the bolt and stud to 55 ft. lbs. (75 Nm)
     
    Transaxle brace
     
    Transmission cooler lines
     
    Right and left axle shafts into the transaxle
     
    Vehicle speed sensor
     
    Torque converter bolts and tighten the bolts to 46 ft. lbs. (63 Nm)
     
    Torque converter inspection cover
     
    Position the transaxle table with the frame under the vehicle
     

  2.  
  3. Lower the vehicle. until the frame is close to the vehicle
    WARNING
    Ensure that the alignment pins remain installed during the frame installation.



    Adjust the utility straps as necessary in order to align the powertrain mounts with the frame
     



    Insert two 19mm (0.75 inch) diameter X 203mm (8.0 inches) long guide pins or drill bits into the frame right side alignment holes in order to align the frame
     
    Frame front bolts and tighten the bolts to 96 ft. lbs. (130 Nm)
     
    Frame straps and bolts and tighten the bolts to 37 ft. lbs. (50 Nm)
     
    Frame rear bolts and tighten the bolts to 177 ft. lbs. (240 Nm)
     
    Remove the alignment pins from the frame
     
    Transaxle mount nuts
     
    Engine mount nuts
     
    Wheel speed sensor wiring harnesses to the lower control arms
     
    Wheel speed sensor electrical connectors.
     
    Lower ball joints to the steering knuckles
     
    Power steering cooler pipe to the frame
     
    Front engine splash shield
     
    Power steering gear to the frame
     
    Power steering gear bolts
     
    Power steering gear heat shield
     
    Propeller shaft, if equipped with AWD
     
    Catalytic converter pipe, if equipped with AWD
     
    Stabilizer shaft
     
    Both tie rod ends to the steering knuckles
     
    Front fender liner
     
    Frame
     
    Remove the engine support fixture.
     
    Upper transaxle bolts and stud and tighten the bolts and stud to 55 ft. lbs. (75 Nm)
     
    Wiring harness to the transaxle
     
    Transmission range selector cable bracket
     
    Transmission range selector cable on the manual shaft
     
    Air cleaner assembly
     
    Coolant recovery bottle
     

  4.  
  5. Install the tire and wheel assembly. Tighten the lug nuts to 100 ft. lbs. (140 Nm) in a criss-cross pattern, after aligning the wheel hub with the reference mark and holes as shown in appropriate illustration.
    WARNING
    Do NOT overfill the transaxle. The overfilling of the transaxle causes foaming, loss of fluid, shift complaints, and possible damage to the transaxle. Adjust the fluid level.


    NOTE
    It is recommended the ate 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.

  6.  
  7. Reset the TAP values.
  8.  
  9. Refill the transmission with the proper amount and type of fluid.
  10.  
  11. Connect the negative battery cable. Start the vehicle and allow to warm while checking for leaks.
  12.  
  13. Road test the vehicle to check for shift quality.
  14.  

All Wheel Drive




NOTE
Transmission oil circulates between the transmission assembly and the transfer case. In situations where transmission related failures circulate debris into the transfer case, the transfer case must be disassembled, cleaned, and inspected for damage.


NOTE
The transmission-to-transfer case end play check procedure must be performed each time the transmission, transfer case, or the internal components (excluding gaskets and seals) are replaced.

  1. Remove the push pins from the coolant recovery bottle.
  2.  
  3. Position aside coolant recovery bottle.
  4.  
  5. Remove air cleaner assembly.
  6.  
  7. Remove the automatic transmission range selector cable from the manual shaft.
  8.  
  9. Remove the automatic transmission range selector cable bracket.
  10.  
  11. Disconnect the wiring harness connectors from the transaxle.
  12.  
  13. Remove the wiring harness bracket from the side cover.
  14.  
  15. Remove the top four bell housing bolts.
  16.  
  17. Remove the prop shaft.
  18.  
  19. Remove the engine to transfer case brace.
  20.  
  21. Remove the frame.
  22.  
  23. Remove the filler tube bracket retaining bolt.
  24.  
  25. Remove the inspection cover.
  26.  
  27. Remove the torque converter bolts.
  28.  
  29. Disconnect the vehicle speed sensor.
  30.  
  31. Remove the right and left axle shafts into the transaxle.
  32.  
  33. Disconnect the transmission cooler lines.
  34.  
  35. Position the transmission jack under the transmission.
  36.  
  37. Remove the transfer case to engine mount bolts.
  38.  
  39. Remove the lower transaxle bolts and stud.
  40.  
  41. Disconnect neutral safety switch.
  42.  
  43. Remove the transaxle from the vehicle.
  44.  
  45. Remove the transfer case from the transaxle.
  46.  
  47. The transmission-to-transfer case end play check procedure must be performed each time the transmission, transfer case, or the internal components (excluding gaskets and seals) are replaced.
  48.  

To install:

  1. The transmission-to-transfer case end play check procedure must be performed each time the transmission, transfer case, or the internal components (excluding gaskets and seals) are replaced.
  2.  
  3. Install the transfer case to the transaxle.
  4.  
  5. Position the flex plate alignment hole to the seven o'clock position.
  6.  
  7. Align the transaxle filler tube to the transmission and install the transaxle into the vehicle.
  8.  
  9. Install the lower transaxle bolt and stud. Tighten the lower transaxle to engine and engine to transaxle bolts to 75 Nm (55 ft. lbs.).
  10.  
  11. Install transfer case to transmission bracket.
  12.  
  13. Install the wiring harness bracket to the side cover.
  14.  
  15. Connect the neutral safety switch.
  16.  
  17. Install the transaxle brace.
  18.  
  19. Install the right and left axle shafts into the transaxle.
  20.  
  21. Connect the vehicle speed sensor.
  22.  
  23. Install the torque converter bolts. Tighten the bolts to 63 Nm (46 ft. lbs.).
  24.  
  25. Install the torque converter cover.
  26.  
  27. Install the filler tube bracket retaining bolt on the transmission.
  28.  
  29. Install the prop shaft.
    NOTE
    Thoroughly clean and apply LOCTITE® DRI-LOC 201® (GM P/N 12345493, or equivalent) to the bolt threads prior to assembly.

  30.  
  31. Install the propeller shaft-to-transfer case bolts. Ensure the special washer is in place on each pair of bolts. Tighten the bolts to 33 Nm (24 ft. lbs.).
  32.  
  33. Install the propeller shaft-to-torque tube bolts. Ensure the special washer is in place on each pair of bolts. Tighten the bolts to 33 Nm (24 ft. lbs.).
  34.  
  35. Install the frame.
  36.  
  37. Install the front wheels.
  38.  
  39. Remove engine support fixture.
  40.  
  41. Install the right side engine strut.
  42.  
  43. Install the upper transaxle bolts and stud. Tighten the bolts and stud to 75 Nm (55 ft. lbs.).
  44.  
  45. Connect the wiring harness the transaxle.
  46.  
  47. Install transmission range selector cable bracket.
  48.  
  49. Install the automatic transmission range selector cable on the manual shaft.
  50.  
  51. Install the air cleaner assembly.
  52.  
  53. Install the coolant recovery bottle.
  54.  
  55. Adjust the fluid level.
  56.  
  57. Inspect for fluid leaks.
  58.  

Front Wheel Drive



  1. Remove the push pins from the coolant recovery bottle.
  2.  
  3. Position aside coolant recovery bottle.
  4.  
  5. Remove air cleaner assembly.
  6.  
  7. Remove the automatic transmission range selector cable from the manual shaft.
  8.  
  9. Remove the automatic transmission range selector cable bracket.
  10.  
  11. Disconnect the wiring harness connectors from the transaxle.
  12.  
  13. Remove the top four bell housing bolts.
  14.  
  15. Remove the frame.
  16.  
  17. Remove the inspection cover.
  18.  
  19. Use J 37096, or equivalent, in order to gain access to the torque converter bolts and prevent the flywheel from turning.
  20.  
  21. Remove the torque converter bolts.
  22.  
  23. Disconnect the vehicle speed sensor.
  24.  
  25. Remove the right and left axle shafts from the transmission.
  26.  
  27. Disconnect the transmission cooler lines.
  28.  
  29. Position the transmission jack under the vehicle.
  30.  
  31. Remove the transaxle brace.
  32.  
  33. Remove the lower transaxle bolts and stud.
  34.  
  35. Disconnect neutral safety switch.
  36.  
  37. Remove the wiring harness bracket from the side cover.
  38.  
  39. Remove the transaxle from the vehicle.
  40.  
  41. Flush the transaxle oil cooler pipes and the transaxle oil cooler.
  42.  
  43. Transfer all necessary parts as needed.
  44.  

To install:

  1. Align the transaxle filler tube to the transmission and install the transaxle into the vehicle.
  2.  
  3. Install the lower transaxle bolt and stud. Tighten the lower transaxle to engine and engine to transaxle bolts to 75 Nm (55 ft. lbs.).
  4.  
  5. Install the wiring harness bracket to the side cover.
  6.  
  7. Connect the neutral safety switch.
  8.  
  9. Install the transaxle brace.
  10.  
  11. Connect the transmission cooler lines.
  12.  
  13. Install the transaxle brace.
  14.  
  15. Install the right and left axle shafts into the transaxle.
  16.  
  17. Connect the vehicle speed sensor.
  18.  
  19. Install the torque converter bolts. Tighten the bolts to 63 Nm (46 ft. lbs.).
  20.  
  21. Install the torque converter cover.
  22.  
  23. Install the filler tube bracket retaining nut on the transmission.
  24.  
  25. Install the frame.
  26.  
  27. Install the front wheels.
  28.  
  29. Lower vehicle.
  30.  
  31. Remove the Engine Support Fixture.
  32.  
  33. Install the upper transaxle bolts and stud. Tighten the bolts and stud to 75 Nm (55 ft. lbs.).
  34.  
  35. Connect the wiring harness to the transaxle.
  36.  
  37. Install transmission range selector cable bracket.
  38.  
  39. Install the automatic transmission range selector cable on the manual shaft.
  40.  
  41. Install the air cleaner assembly.
  42.  
  43. Install the coolant recovery bottle.
  44.  
  45. Adjust the fluid level.
  46.  
  47. Inspect for fluid leaks.
  48.  

 
label.common.footer.alt.autozoneLogo