Removal Procedure
- Disconnect negative battery cable.
- Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information
- Loosen the bolts around the transmission oil pan.
- Position an oil container under the oil pan to catch the draining oil.
- Pry the front of the oil pan free from the transmission and drain the transmission oil.
- Disconnect the shift cable from the transmission control lever and bracket. Refer Shift Cable Replacement .
- Remove the rear propeller shaft. Refer to One-Piece Propeller Shaft Replacement or to Two-Piece Propeller Shaft Replacement .
- Raise and support the vehicle.
- Remove the transfer case from the transmission. Refer to Transfer Case Replacement.
- Nut and washer securing the transmission mount to the cross member.
- Remove the two bolts and washers securing the mount to the transmission.
- Remove exhaust pipes from the exhaust manifolds. Refer to Exhaust System Replacement.
- Remove three bolts securing the flywheel to the torque converter.
- Remove the bolt, clip, and strap securing the fuel lines and transmission vent hose to the transmission.
- Remove the bolts securing the transmission to the engine.
- Remove the bolts securing the transmission to the engine.
- Remove the oil level indicator tube from the transmission. Refer to Filler Tube Replacement .
- Plug the oil Level Indicator tube opening in the transmission.
- Disconnect the transmission cooler lines from the transmission. Refer to Oil Cooler Hose/Pipe Replacement .
- Plug the transmission cooler line connectors in the transmission case.
- Disconnect the wiring harness connectors from the transmission speed sensor and park neutral position switch.
- Remove all of the vehicle harness wires, harness clips, tubes, brackets, and lines that may interfere with the removal of the transmission from the vehicle.
- Install J-21336 to the converter housing to secure the torque converter
- Pull the transmission straight back from the engine.
- Lower the transmission using the transmission jack.
- Flush the transmission oil cooler and lines. Refer to Transmission Fluid Cooler Flushing .
Important: Vehicles equipped with the 4.3L engines must have the two access caps (located at the bottom front of the transmission) removed to gain access to the torque converter through the torque converter housing.
Important: Support the transmission using a transmission jack with a safety chain prior to removing the transmission from the engine.
Important: J -21336 perverts the torque converter from pulling forward and dropping out of the transmission during engine and transmission separation.
Installation Procedure
- Ensure the torque converter is seated properly and that J 21366 is installed.
- Raise the transmission into place and remove J 21366.
- Slide the transmission straight onto the locating pins while lining up the marks on the flywheel and the torque converter.
- Install the bolts securing the transmission to the engine.
- Install all brackets, clips, and harness as they were when removed.
- Install the wiring harness connectors to the transmission speed sensor and park/neutral position switch.
- Remove the transmission case cooling line plugs from the transmission case.
- Install the transmission cooler lines. Refer to Oil Cooler Hose/Pipe Replacement .
- Remove the oil filler tube plug from the transmission case.
- Install the transmission oil level indicator tube. Refer to Filler Tube Replacement .
- Install the bolt, clip and strap securing the three fuel lines and transmission vent hose to the transmission case.
- Install the flywheel to torque converter bolts.
- Install the exhaust pipe to the exhaust manifolds support brackets. Refer to Exhaust System Replacement.
- Install two bolts and washers securing the mount to the transmission.
- Install the nut and washer securing the transmission mount to the cross member.
- Remove the transmission jack from the transmission.
- Install the transfer case to the transmission, if equipped. Refer to Transfer Case Replacement.
- Install the rear propeller shaft. Refer to Rear Propeller Shaft Replacement.
- Lower the vehicle.
- Fill the transmission to the proper level with transmission oil.
- Test the transmission for proper operation.
Support the transmission with a transmission jack.
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.
Important: The torque converter must be flush with the flywheel and rotate freely by hand.
Tighten
Tighten transmission to engine bolts to 47 N·m (34 lb ft).
Tighten
Tighten the bolts to 63 N·m (46 lb ft).
Tighten
Tighten the bolts to 47 N·m (35 lb ft).
Tighten
Tighten the bolts to 52 N·m (38 lb ft).
