GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 35944-A Transmission Oil Cooler Flusher

Removal Procedure

Important: 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.

  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .

  2. Object Number: 1395562  Size: SH
  3. Remove the transmission lower bell housing bolt located between the engine oil pan and the transmission oil pan.
  4. Remove the powertrain (engine, transmission, and frame) from the vehicle. Refer to Engine Replacement .
  5. Remove the filler tube. Refer to Transmission Fluid Filler Tube Replacement .

  6. Object Number: 1395501  Size: SH
  7. Remove the transmission bell housing bolts (2).
  8. Remove the coolant inlet pipe. Refer to Radiator Inlet Hose Replacement .
  9. Remove the transmission mount with the transmission mount bracket. Refer to Transmission Mount Bracket Replacement .
  10. Remove the starter motor. Refer to Starter Motor Replacement .
  11. Remove the torque converter bolts. Refer to Flywheel to Torque Converter Bolt Replacement .
  12. Remove the transmission lower brace. Refer to Transmission Brace Replacement .

  13. Object Number: 1395483  Size: SH
  14. Remove the transmission upper brace nut located behind the power steering pump and above the transfer case.

  15. Object Number: 1395484  Size: SH
  16. Remove the transmission bolt near the crank sensor and the engine coolant (block) heater.
  17. Separate the transmission from the engine.
  18. Flush the transaxle oil cooler and the transaxle oil cooler hoses. Refer to Transmission Fluid Cooler Flushing and Flow Test .

Installation Procedure


    Object Number: 1395501  Size: SH
  1. Use the dowel locator pins (1) in order to align and install the transmission to the engine.
  2. Notice: Refer to Fastener Notice in the Preface section.

  3. Install the transmission bell housing bolts (2).
  4. Tighten
    Tighten the transmission bell housing bolts to 50 N·m (37 lb ft).


    Object Number: 1395484  Size: SH
  5. Install the transmission bell housing bolt near the crank sensor and the engine coolant (block) heater.
  6. Tighten
    Tighten the transmission bell housing bolt to 50 N·m (37 lb ft).


    Object Number: 1395483  Size: SH
  7. Install the transmission upper brace nut located behind the power steering pump and above the transfer case.
  8. Tighten
    Tighten the transmission upper brace nut to 50 N·m (37 lb ft).

  9. Install the transmission lower brace. Refer to Transmission Brace Replacement .
  10. Install the torque converter bolts. Refer to Flywheel to Torque Converter Bolt Replacement .
  11. Install the starter motor. Refer to Starter Motor Replacement .
  12. Install the transmission mount with the transmission mount bracket. Refer to Transmission Mount Bracket Replacement .
  13. Install the coolant inlet pipe. Refer to Radiator Inlet Hose Replacement .
  14. Install the filler tube. Refer to Transmission Fluid Filler Tube Replacement .
  15. Install the powertrain (engine, transmission, and frame) to the vehicle. Refer to Engine Replacement .

  16. Object Number: 1395562  Size: SH
  17. Install the transmission lower bell housing bolt located between the engine oil pan and the transmission oil pan.
  18. Tighten
    Tighten the transmission bell housing bolt to 50 N·m (37 lb ft).

  19. Inspect and adjust the transaxle fluid level as needed. Refer to the following information:
  20. •  Transmission Fluid Check
    •  Fluid and Lubricant Recommendations
    •  Approximate Fluid Capacities

    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.

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