GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2000 🢒 Blazer - 4WD - RHD 🢒 Engine 🢒 Engine Mechanical - 4.3L 🢒 Transmission Replacement

Removal Procedure
  1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Remove the filler tube from the transmission. Refer to Filler Tube Replacement .
  3. Plug the filler tube opening in the transmission.
  4. Remove the exhaust manifold pipe. Refer to Catalytic Converter Replacement in Exhaust System.
  5. Remove the shift cable from the transmission. Refer Shift Cable Replacement .
  6. Remove the rear propeller shaft. Refer to Rear Propeller Shaft Replacement in Propeller Shaft.
  7. If the vehicle is equipped with a transfer case, remove the front propeller shaft. Refer to Front Propeller Shaft Replacement in Propeller Shaft.
  8. If the vehicle is equipped with a transfer case, remove the transfer case. Refer to Transfer Case Replacement in NV236 Transfer Case.
  9. Remove the oil cooler lines. Refer to Oil Cooler Hose/Pipe Replacement .
  10. Plug the transmission oil cooler line connectors in the transmission case.
  11. Disconnect the wiring harness connectors from the transmission speed sensor and park neutral position switch.
  12. Remove the torque converter bolts. Refer to Flywheel to Torque Converter Bolt Replacement .

    13. Object Number: 9098 Size: SH
  13. Nut and washer securing the transmission mount to the cross member.
  14. Remove the two bolts and washers securing the mount to the transmission.
  15. Support the transmission with a transmission jack.

    16. Object Number: 32774 Size: SH
  16. Remove the bolts securing the transmission to the engine.
  17. Install J 21336 to the converter housing to secure the torque converter

    18. Important: J  21336 prevents the torque converter from pulling forward and dropping out of the transmission during engine and transmission separation.

  18. Pull the transmission straight back from the engine.
  19. Lower the transmission using the transmission jack.

Transmission Installation
  1. Ensure the torque converter is seated properly and that J 21366 is installed.

    2. Object Number: 32774 Size: SH
  2. Raise the transmission into place and remove J  21366.

    3. Support the transmission with a transmission jack.

  3. Slide the transmission straight onto the locating pins while lining up the marks on the flywheel and the torque converter.

    4. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  4. Install the bolts securing the transmission to the engine.

    5. Tighten
    Tighten transmission to engine bolts to 47 N·m (35 lb ft).


    Object Number: 9098 Size: SH
  5. Install the nut and washer securing the transmission mount to the cross member.

    6. Tighten
    Tighten the bolts to 52 N·m (38 lb ft).

  6. Install the torque converter bolts. Refer to Flywheel to Torque Converter Bolt Replacement .
  7. Connect the wiring harness connectors to the transmission speed sensor and park neutral position switch.
  8. Unplug the transmission oil cooler line connectors in the transmission case.
  9. Install the oil cooler lines. Refer to Oil Cooler Hose/Pipe Replacement .
  10. If the vehicle is equipped with a transfer case, install the transfer case. Refer to Transfer Case Replacement in NV236 Transfer Case.
  11. If the vehicle is equipped with a transfer case, install the front propeller shaft. Refer to Front Propeller Shaft Replacement in Propeller Shaft.
  12. install the rear propeller shaft. Refer to Rear Propeller Shaft Replacement in Propeller Shaft.
  13. Install the shift cable to the transmission. Refer Shift Cable Replacement .
  14. Install the exhaust manifold pipe. Refer to Catalytic Converter Replacement in Exhaust System.
  15. Unplug the filler tube opening in the transmission.
  16. Install the filler tube to the transmission. Refer to Filler Tube Replacement .
  17. Fill the transmission to the proper level with transmission oil. Refer to Fluid Capacity .
  18. Lower the vehicle.
  19. Test the transmission for proper operation.