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Automatic Transaxle Removal & Installation Buick Century VI

Automatic Trans 39 illustrations ~3535 words

APPLICATION

ApplicationTransaxle Model (RPO Code)
Century4T65-E (M15)
Regal
GS4T65-E (MN7)
LS4T65-E (M15)

TRANSAXLE APPLICATION

WARNINGVehicle is equipped with Supplemental Inflatable Restraint (SIR) system. When servicing vehicle, use care to avoid accidental air bag deployment. SIR system-related components are located in various locations throughout interior and exterior of vehicle, depending on application. Do not use electrical test equipment on or near these circuits. If necessary, deactivate SIR system before servicing components. See appropriate AIR BAG DEACTIVATION PROCEDURES article in GENERAL INFORMATION.
CAUTIONWhen battery is disconnected, vehicle computer may lose memory data. Driveability problems may exist until computer systems have completed a relearn cycle. See COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION before disconnecting battery.

Note. 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.

Scheme 347

Scheme 347: Removal

Scheme 348

Scheme 348

Scheme 349

Scheme 349
  1. Disconnect the negative (-) battery cable.
  2. Remove the air cleaner intake duct. See «AIR CLEANER INTAKE DUCT»(/buick/century/vi-1997-2005/remont/automatic-trans/#automatic-transaxle-removal-installation).
  3. Remove the engine mount strut brackets from the upper radiator support. See «ENGINE MOUNT STRUT BRACKET-TO-UPPER RADIATOR SUPPORT»(/buick/century/vi-1997-2005/remont/automatic-trans/#automatic-transaxle-removal-installation).
  4. Install the engine support fixture. See «ENGINE SUPPORT FIXTURE»(/buick/century/vi-1997-2005/remont/automatic-trans/#automatic-transaxle-removal-installation).
  5. Disconnect the electrical wiring harness connectors from the transaxle and the PNP switch.
  6. Remove the automatic transaxle range selector cable from the PNP switch and the automatic transaxle range selector cable bracket.
  7. Remove the ground wire nuts and the ground wires from the studs.
  8. Remove the upper transaxle bolts (3, 4 and 5), and the stud (2). (Scheme 347)
  9. Raise and support the vehicle.
  10. Drain the transaxle fluid. See LUBRICATION in SERVICING - CENTURY & REGAL article.
  11. Remove the frame from the vehicle. See «FRAME REPLACEMENT»(/buick/century/vi-1997-2005/remont/automatic-trans/#automatic-transaxle-removal-installation).
  12. Position a transmission jack under the transaxle and secure the transmission jack to the transaxle.
  13. Remove the transaxle fluid filler tube bolt. (Scheme 348)
  14. Remove the transaxle fluid filler fill tube. (Scheme 348)
  15. Remove the torque converter cover bolts. (Scheme 349)
  16. Remove the torque converter covers. (Scheme 349)
  17. Remove the starter motor. See appropriate STARTERS article in ELECTRICAL.
  18. Install the flywheel holder to the flywheel and remove the torque converter bolts.
  19. Remove the transaxle oil cooler pipes from the transaxle. See REMOVAL & INSTALLATION in SERVICING - CENTURY & REGAL article.
  20. Remove the drive shafts from the transaxle. See appropriate AXLE SHAFTS article DRIVELINE/AXLES.
  21. Secure the drive shafts to the steering knuckle and the struts.
  22. Disconnect the Vehicle Speed Sensor (VSS) electrical connector.
  23. Remove the transaxle brace. See «TRANSAXLE BRACE»(/buick/century/vi-1997-2005/remont/automatic-trans/#automatic-transaxle-removal-installation).
  24. Remove the lower transaxle bolt (6) and the stud (1).
  25. Using the transmission jack, lower and remove the transaxle from the vehicle.
  26. Remove the PNP switch.
  27. Remove the transaxle mount.
  28. If the transaxle is being disassembled and inspected, see appropriate OVERHAUL article.
  29. Use the oil cooler and line flusher to flush the transaxle oil cooler and the transaxle oil cooler hose/pipes. See LUBRICATION in SERVICING - CENTURY & REGAL article.

Scheme 350

Scheme 350: Installation
  1. Install the transaxle mount.
  2. Install the PNP switch.
  3. Install the transaxle to the transmission jack.
  4. Use the transmission jack to raise and install the transaxle to the engine.
  5. Install the lower transaxle bolt (6) and the stud (1). Tighten the bolt and the stud to specification. See «TORQUE SPECIFICATIONS»(/buick/century/vi-1997-2005/remont/automatic-trans/#automatic-transaxle-removal-installation__torque-specifications).
  6. Install the transaxle brace. See «TRANSAXLE BRACE»(/buick/century/vi-1997-2005/remont/automatic-trans/#automatic-transaxle-removal-installation).
  7. Connect the VSS electrical connector.
  8. Remove the drive shafts from the steering knuckle and the struts. See appropriate FRONT article in SUSPENSION.
  9. Install the drive shaft to the transaxle. See appropriate DRIVE SHAFTS & UNIVERSAL JOINTS article in DRIVELINE/AXLES.
  10. Install the transaxle oil cooler pipes to the transaxle. See REMOVAL & INSTALLATION in SERVICING - CENTURY & REGAL article.
  11. Install the flywheel holder to the flywheel and install the torque converter bolts. (Scheme 350) Tighten the bolts to specification. See «TORQUE SPECIFICATIONS»(/buick/century/vi-1997-2005/remont/automatic-trans/#automatic-transaxle-removal-installation__torque-specifications).
  12. Install the starter motor. See appropriate STARTERS article in ELECTRICAL.
  13. Install the torque converter covers. (Scheme 349)
  14. Install the torque converter cover bolts. (Scheme 349) Tighten the bolts to specification. See «TORQUE SPECIFICATIONS»(/buick/century/vi-1997-2005/remont/automatic-trans/#automatic-transaxle-removal-installation__torque-specifications).
  15. Install the transaxle fluid filler tube. (Scheme 348)
  16. Install the transaxle fluid filler tube bolt. (Scheme 348) Tighten the bolt to specification. See «TORQUE SPECIFICATIONS»(/buick/century/vi-1997-2005/remont/automatic-trans/#automatic-transaxle-removal-installation__torque-specifications).
  17. Remove the transmission jack from the transaxle.
  18. Install the frame to the vehicle. See «FRAME REPLACEMENT»(/buick/century/vi-1997-2005/remont/automatic-trans/#automatic-transaxle-removal-installation).
  19. Lower the vehicle.
  20. Install the upper transaxle bolts (3, 4 and 5), and the stud (2). Tighten the bolts and the stud to specification. See «TORQUE SPECIFICATIONS»(/buick/century/vi-1997-2005/remont/automatic-trans/#automatic-transaxle-removal-installation__torque-specifications).
  21. Install the engine wire ground wires and the nuts to the studs. Tighten the nuts to specification. See «TORQUE SPECIFICATIONS»(/buick/century/vi-1997-2005/remont/automatic-trans/#automatic-transaxle-removal-installation__torque-specifications).
  22. Install the automatic transaxle range selector cable bracket and the automatic transaxle range selector cable to the transaxle.
  23. Connect the electrical wiring harness connectors to the transaxle and the PNP switch.
  24. Remove the engine support fixture. See «ENGINE SUPPORT FIXTURE»(/buick/century/vi-1997-2005/remont/automatic-trans/#automatic-transaxle-removal-installation).
  25. Install the engine mount strut brackets to the upper radiator support. See «ENGINE MOUNT STRUT BRACKET-TO-UPPER RADIATOR SUPPORT»(/buick/century/vi-1997-2005/remont/automatic-trans/#automatic-transaxle-removal-installation).
  26. Install the air cleaner intake duct clamps. See «AIR CLEANER INTAKE DUCT»(/buick/century/vi-1997-2005/remont/automatic-trans/#automatic-transaxle-removal-installation). Tighten to specification. See «TORQUE SPECIFICATIONS»(/buick/century/vi-1997-2005/remont/automatic-trans/#automatic-transaxle-removal-installation__torque-specifications).
  27. Connect the negative (-) battery cable. Tighter bolt to specification. See «TORQUE SPECIFICATIONS»(/buick/century/vi-1997-2005/remont/automatic-trans/#automatic-transaxle-removal-installation__torque-specifications).
  28. Adjust the fluid level to specification. See LUBRICATION in SERVICING - CENTURY & REGAL article.
  29. Inspect for fluid leaks.

Scheme 351

Scheme 351: Removal

Scheme 352

Scheme 352
  1. Disconnect the negative (-) battery cable.
  2. Remove the air cleaner intake duct. See «AIR CLEANER INTAKE DUCT»(/buick/century/vi-1997-2005/remont/automatic-trans/#automatic-transaxle-removal-installation).
  3. Disconnect the transaxle wiring harness electrical connectors.
  4. Remove the transaxle range selector cable from the transaxle shift lever.
  5. Remove the transaxle range selector cable retainer from the cable. (Scheme 351)
  6. Remove the transaxle range selector cable from the transaxle. (Scheme 352)
  7. Remove the transaxle wiring harness grounds from the transaxle.
  8. Remove the upper transaxle bolts (3, 4 and 5) and the stud (2). (Scheme 347)
  9. Install the engine support fixture. See «ENGINE SUPPORT FIXTURE»(/buick/century/vi-1997-2005/remont/automatic-trans/#automatic-transaxle-removal-installation).
  10. Raise and support the vehicle.
  11. Remove the front wheels.
  12. Remove the left and the right engine splash shields.
  13. Remove the frame from the vehicle. See «FRAME REPLACEMENT»(/buick/century/vi-1997-2005/remont/automatic-trans/#automatic-transaxle-removal-installation).
  14. Remove the starter motor. See appropriate STARTERS article in ELECTRICAL.
  15. Install the appropriate flywheel holder in order to gain access to the torque converter bolts and to prevent the flywheel from turning.
  16. Remove the torque converter bolts. (Scheme 350)
  17. Remove the transaxle oil cooler pipes from the transaxle. See «REMOVAL & INSTALLATION»(/buick/century/vi-1997-2005/remont/automatic-trans/#automatic-transaxle-servicing__removal-installation) in SERVICING - CENTURY & REGAL article.
  18. Remove the left and the right wheel drive shafts from the transaxle.
  19. Secure the drive shafts to the steering knuckles.
  20. Disconnect the vehicle speed sensor electrical connector.
  21. Position a transmission jack under the transaxle and secure the transmission jack to the transaxle.
  22. Remove the transaxle brace. See «TRANSAXLE BRACE»(/buick/century/vi-1997-2005/remont/automatic-trans/#automatic-transaxle-removal-installation).
  23. Remove the lower transaxle bolt (6) and the stud (1). (Scheme 347)
  24. Remove the transaxle from the vehicle.
  1. Position the transaxle onto a transmission jack and secure the transaxle to the transmission jack.
  2. Install the transaxle into the vehicle.
  3. Install the transaxle to engine bolt (6) and stud (1). (Scheme 347) Tighten the bolt and the stud to specification. See «TORQUE SPECIFICATIONS»(/buick/century/vi-1997-2005/remont/automatic-trans/#automatic-transaxle-removal-installation__torque-specifications).
  4. Install the transaxle brace. See «TRANSAXLE BRACE»(/buick/century/vi-1997-2005/remont/automatic-trans/#automatic-transaxle-removal-installation).
  5. Install appropriate flywheel holder in order to gain access to install the torque converter bolts and to prevent the flywheel from turning.
  6. Install the torque converter bolts. (Scheme 350) Tighten the bolts to specification. See «TORQUE SPECIFICATIONS»(/buick/century/vi-1997-2005/remont/automatic-trans/#automatic-transaxle-removal-installation__torque-specifications).
  7. Install the drive shafts into the transaxle. See appropriate AXLE SHAFTS article in DRIVELINE/AXLES.
  8. Install the transaxle oil cooler pipes to the transaxle. See «REMOVAL & INSTALLATION»(/buick/century/vi-1997-2005/remont/automatic-trans/#automatic-transaxle-servicing__removal-installation) in SERVICING - CENTURY & REGAL article.
  9. Install the starter motor. See appropriate STARTERS article in ELECTRICAL.
  10. Remove the transmission jack from the transaxle.
  11. Install the frame to the vehicle. See «FRAME REPLACEMENT»(/buick/century/vi-1997-2005/remont/automatic-trans/#automatic-transaxle-removal-installation).
  12. Connect the vehicle speed sensor electrical connector.
  13. Install the left and the right engine splash shield.
  14. Install the front wheels. Tighten the lug nuts to specification. See «TORQUE SPECIFICATIONS»(/buick/century/vi-1997-2005/remont/automatic-trans/#automatic-transaxle-removal-installation__torque-specifications).
  15. Lower the vehicle.
  16. Remove the engine support fixture. See «ENGINE SUPPORT FIXTURE»(/buick/century/vi-1997-2005/remont/automatic-trans/#automatic-transaxle-removal-installation).
  17. Install the upper transaxle to engine bolts (3, 4 and 5), and stud (2). (Scheme 347) Tighten the bolts to specification. See «TORQUE SPECIFICATIONS»(/buick/century/vi-1997-2005/remont/automatic-trans/#automatic-transaxle-removal-installation__torque-specifications).
  18. Install the transaxle wiring harness grounds and the nuts. Tighten the bolts to specification. See «TORQUE SPECIFICATIONS»(/buick/century/vi-1997-2005/remont/automatic-trans/#automatic-transaxle-removal-installation__torque-specifications).
  19. Connect the transaxle wiring harness electrical connectors.
  20. Install the transaxle range selector cable to the transaxle range selector cable bracket. (Scheme 352)
  21. Install the automatic transaxle range selector cable retainer to the cable. (Scheme 351)
  22. Install the transaxle range selector cable to the transaxle shift lever.
  23. Install the air cleaner intake duct. See «AIR CLEANER INTAKE DUCT»(/buick/century/vi-1997-2005/remont/automatic-trans/#automatic-transaxle-removal-installation).
  24. Connect the negative (-) battery cable. Tighten the bolts to specification. See «TORQUE SPECIFICATIONS»(/buick/century/vi-1997-2005/remont/automatic-trans/#automatic-transaxle-removal-installation__torque-specifications).
  25. Fill the transaxle with automatic transmission fluid to specification. See «LUBRICATION»(/buick/century/vi-1997-2005/remont/automatic-trans/#automatic-transaxle-servicing) in SERVICING - CENTURY & REGAL article.
  26. Inspect for automatic transmission fluid leaks.

Scheme 353

Scheme 353: Removal (3.1L)
  1. Loosen the air cleaner intake duct clamps (2 and 6). (Scheme 353)
  2. Remove the PCV tube (4) from the air cleaner intake duct.
  3. Disconnect the intake air temperature (IAT) sensor electrical connector (3).
  4. Disconnect the mass air flow (MAF) sensor electrical connector (5).
  5. Remove the air cleaner intake duct from the air cleaner assembly (8) and the throttle body.
  6. Loosen the clamp on the MAF sensor and remove the air cleaner intake duct from the MAF sensor (7).
  7. If replacing the air cleaner intake duct, remove the IAT sensor (1) with a twisting and pulling motion.

Installation (3.1L)

  1. If removed, install the IAT sensor (1).
  2. Install the air cleaner intake duct to the MAF sensor (7). (Scheme 353)
  3. Install the air cleaner intake duct to the throttle body and the air cleaner assembly.
  4. Install the air cleaner intake duct clamps (2 and 6). (Scheme 353) Tighten the clamps to specification. See «TORQUE SPECIFICATIONS»(/buick/century/vi-1997-2005/remont/automatic-trans/#automatic-transaxle-removal-installation__torque-specifications).
  5. Connect the MAF sensor electrical connector (5).
  6. Connect the IAT sensor electrical connector (3).
  7. Install the PCV tube (4) to the air cleaner intake duct.

Scheme 354

Scheme 354: Removal (3.8L)
  1. Disconnect the intake air temperature (IAT) sensor electrical connector (3). (Scheme 354)
  2. Remove the IAT sensor with a twisting and pulling motion.
  3. Loosen the air cleaner intake duct clamp.
  4. Remove the air cleaner intake duct from the air cleaner cover.
  5. Remove the air cleaner intake duct from the throttle body.

Installation (3.8L)

  1. Install the air cleaner intake duct to the throttle body.
  2. Install the air cleaner intake duct to the air cleaner cover. Tighten the air cleaner duct clamp to specification. See «TORQUE SPECIFICATIONS»(/buick/century/vi-1997-2005/remont/automatic-trans/#automatic-transaxle-removal-installation__torque-specifications).
  3. Install the IAT sensor.
  4. Connect the IAT sensor electrical connector (3). (Scheme 354)

Scheme 355

Scheme 355: Removal - Left (3.1L)

Scheme 356

Scheme 356
  1. Remove the engine mount strut from the left engine mount strut bracket. (Scheme 355)
  2. Remove the engine mount strut bracket bolts from the left engine mount strut bracket to the cylinder head. (Scheme 356)
  3. Remove the left engine mount strut bracket. (Scheme 356)

Installation - Left (3.1L)

  1. Install the engine mount strut bracket. (Scheme 356)
  2. Install the engine mount strut bracket bolts through the engine mount strut bracket to the cylinder head. (Scheme 356) Tighten engine mount strut bracket bolts to specification. See «TORQUE SPECIFICATIONS»(/buick/century/vi-1997-2005/remont/automatic-trans/#automatic-transaxle-removal-installation__torque-specifications).
  3. Install the engine mount strut to the left engine mount strut bracket.

Scheme 357

Scheme 357: Removal - Right (3.1L)

Scheme 358

Scheme 358
  1. Remove the right engine mount strut from the right engine mount strut bracket. (Scheme 357)
  2. Remove the air conditioning compressor mounting bolts.
  3. Remove and set the air conditioning compressor aside.
  4. Remove the bolts from the right engine mount strut bracket.
  5. Remove the right engine mount strut bracket. (Scheme 358)

Installation - Right (3.1L)

  1. Position the right engine mount strut bracket over the pin locator. (Scheme 358)
  2. Install the bolts through the right engine mount strut bracket to the cylinder head. Tighten engine mount strut bracket bolt to specification. See «TORQUE SPECIFICATIONS»(/buick/century/vi-1997-2005/remont/automatic-trans/#automatic-transaxle-removal-installation__torque-specifications).
  3. Install the air conditioning compressor. Tighten air conditioning compressor mounting bolts to specification. See «TORQUE SPECIFICATIONS»(/buick/century/vi-1997-2005/remont/automatic-trans/#automatic-transaxle-removal-installation__torque-specifications).
  4. Install the right engine mount strut to the right engine mount strut bracket. (Scheme 357)

Scheme 359

Scheme 359: Removal (3.8L)

Scheme 360

Scheme 360
  1. Remove the bolt and the nut from the right engine mount strut at the right engine mount strut bracket on the engine. (Scheme 359)
  2. Remove the bolt and the nut from the right engine mount strut at the right engine mount strut bracket on the upper radiator support. (Scheme 360)
  3. Remove the engine mount strut.
  4. Inspect the rubber in the engine mount strut for the following conditions: Hardness Splitting Cracking
  1. Install the engine mount strut.
  2. Install the bolt and the nut to the right engine mount strut at the right engine mount strut bracket on the upper radiator support. (Scheme 360) Tighten the engine mount strut bracket bolt to specification. See «TORQUE SPECIFICATIONS»(/buick/century/vi-1997-2005/remont/automatic-trans/#automatic-transaxle-removal-installation__torque-specifications).
  3. Install the bolt and the nut to the right engine mount strut at the right engine mount strut bracket on the engine. (Scheme 359) See «TORQUE SPECIFICATIONS»(/buick/century/vi-1997-2005/remont/automatic-trans/#automatic-transaxle-removal-installation__torque-specifications).

Scheme 361

Scheme 361: Removal (3.1L)

Scheme 362

Scheme 362
  1. Remove the engine mount strut from the engine mount strut bracket at the upper radiator support. (Scheme 361)
  2. Remove the horizontal engine mount strut bracket bolt from the engine mount strut bracket. (Scheme 362)
  3. Remove the vertical engine mount strut bracket bolts from the engine mount strut bracket.
  4. Remove the engine mount strut bracket from the upper radiator support.

Scheme 363

Scheme 363: Installation (3.1L)
  1. Position the engine mount strut bracket over the upper radiator support. Make sure that the engine mount strut bracket and the engine mount strut are aligned to the proper holes of the upper radiator support (1 and 2). (Scheme 363)for proper torque sequence.
  2. Install and tighten the engine mount strut bracket bolts. The following is a mandatory torque sequence: Horizontal engine mount strut bracket bolt (1). See «TORQUE SPECIFICATIONS»(/buick/century/vi-1997-2005/remont/automatic-trans/#automatic-transaxle-removal-installation__torque-specifications). Vertical engine mount strut bracket bolt (2). See «TORQUE SPECIFICATIONS»(/buick/century/vi-1997-2005/remont/automatic-trans/#automatic-transaxle-removal-installation__torque-specifications).
  3. Install the engine mount strut to the engine mount strut bracket at the upper radiator support. (Scheme 363) See «ENGINE MOUNT STRUT BRACKET»(/buick/century/vi-1997-2005/remont/automatic-trans/#automatic-transaxle-removal-installation).

Scheme 364

Scheme 364: Removal (3.8L)
  1. Remove the engine mount strut(s) from the engine mount strut bracket(s) at the upper radiator support. See «ENGINE MOUNT STRUT BRACKET»(/buick/century/vi-1997-2005/remont/automatic-trans/#automatic-transaxle-removal-installation).
  2. Remove the 4 bolts from the engine mount strut bracket to the upper radiator support. (Scheme 364)
  3. Remove the engine mount strut bracket from the upper radiator support.
  1. Position the engine mount strut bracket over the upper radiator support so the engine mount strut bracket and the engine mount strut are aligned. Align the engine mount strut bracket with the proper holes of the upper radiator support.
  2. Install the 4 bolts through the engine mount strut bracket to the upper radiator support. (Scheme 364) Tighten the engine mount strut bracket bolts to specification. See «TORQUE SPECIFICATIONS»(/buick/century/vi-1997-2005/remont/automatic-trans/#automatic-transaxle-removal-installation__torque-specifications).
  3. Install the engine mount strut(s) to the engine mount strut bracket(s) at the upper radiator support. See «ENGINE MOUNT STRUT BRACKET»(/buick/century/vi-1997-2005/remont/automatic-trans/#automatic-transaxle-removal-installation).

Scheme 365

Scheme 365: 3.1L

Scheme 366

Scheme 366

Scheme 367

Scheme 367

Scheme 368

Scheme 368

Scheme 369

Scheme 369
  1. Disconnect the negative (-) battery cable.
  2. Remove the left engine mount strut and the bracket from the upper radiator support. See «ENGINE MOUNT STRUT BRACKET-TO-UPPER RADIATOR SUPPORT»(/buick/century/vi-1997-2005/remont/automatic-trans/#automatic-transaxle-removal-installation).
  3. Assemble the Engine Support Fixture Adapters (J-28467-501) (2) to the Universal Engine Support Fixture (J-28467-B) cross bar (1). (Scheme 365)
  4. Install the universal engine support fixture (1) and the engine support fixture adapters (2) to the fender rails. (Scheme 365)
  5. Install the Engine Support Adapter Leg Set (J-36462-A) (1) to the cross bar (2). (Scheme 366)
  6. Install the support lift hook (1) to the cross bar (2). (Scheme 367)
  7. Install the support hook (1) to the right engine lift hook (3). (Scheme 367)
  8. Install the support hook (1) to the engine support adapter leg set (2). (Scheme 368)
  9. Install the support hook (1) to the left engine lift hook (3).
  10. Raise the engine to release the pressure off of the engine mounts. (Scheme 369)
  11. To remove, reverse installation procedure.

Scheme 370

Scheme 370: 3.8L

Scheme 371

Scheme 371

Scheme 372

Scheme 372

Scheme 373

Scheme 373

Scheme 374

Scheme 374

Scheme 375

Scheme 375

Scheme 376

Scheme 376

Scheme 377

Scheme 377

Scheme 378

Scheme 378

Scheme 379

Scheme 379

Scheme 380

Scheme 380

Scheme 381

Scheme 381
  1. Raise the hood.
  2. Disconnect the negative (-) battery cable.
  3. Remove the cross vehicle brace.
  4. Remove the hood side rear seal (1) from the pinchweld flange. (Scheme 370)
  5. Install the Engine Support Adapters (J-28467-90A) onto the strut attaching studs. (Scheme 371)
  6. Install the Strut Tower Support Assemblies (J-28467-5A) over the engine support adapters. (Scheme 372)
  7. Install the wing nuts to the engine support adapters. (Scheme 373)
  8. Install the Strut Tower Tube (J-28467-3) into the strut tower support assemblies. (Scheme 374)
  9. Install the 1/2" X 2.5" Quick Release Pin (J-28467-10) through the strut tower support assemblies and the strut tower tube on one side only. (Scheme 375)
  10. Install the Radiator Shelf Tube (J-28467-2A) on the top of the strut tower tube on the driver side. (Scheme 376)
  11. Install the round tube of the Front Support Assembly (J-28467-4A) through the large hole in the radiator shelf tube.
  12. Install the 7/16" X 2.0" Quick Release Pin (J-28467-9) through the hole in the front support assembly in order to level the radiator shelf tube. (Scheme 377)
  13. Install the Cross Bracket Assembly (J-28467-1A). (Scheme 378)
  14. Install the Lift Hook (J-28467-7A) through the Lift Hook Bracket (J-28467-6A).
  15. Install the 1/2" lift hook washer and Lift Hook Wing Nut (J-28467-34) onto the lift hook.
  16. Install the assembled Lift Hook Bracket over the passenger side radiator shelf tube. (Scheme 379)
  17. Adjust the passenger side radiator shelf tube and the assembled lift hook bracket in order to align the hook with the left, rear of engine, lift hook bracket attached to the left exhaust manifold. (Scheme 379)
  18. Install the Lift Hook through the Lift Hook Bracket. (Scheme 379)
  19. Install the 1/2" lift hook washer and lift hook wing nut onto the lift hook. (Scheme 380)
  20. Install the assembled lift hook bracket over the strut tower tube.
  21. Adjust the assembled swivel lift hook bracket in order to align the hook with the right, front of engine, lift hook bracket attached to the right exhaust manifold.
  22. Hand tighten the cross bracket assembly wing nuts.
  23. Hand tighten the lift hook wing nuts securely to remove all slack from the engine support fixture assembly. (Scheme 381)
  24. To remove, reverse installation procedure.

Scheme 382

Scheme 382: Removal

Scheme 383

Scheme 383

Scheme 384

Scheme 384
  1. Install the engine support fixture. See «ENGINE SUPPORT FIXTURE»(/buick/century/vi-1997-2005/remont/automatic-trans/#automatic-transaxle-removal-installation).
  2. Raise and support the vehicle.
  3. Remove the front tires and wheels.
  4. Remove the radiator lower air deflector.
  5. Disconnect the fog lamp electrical connectors and position aside.
  6. Remove the positive (+) battery cable and retainers from the frame and position the cable aside.
  7. Disconnect the power steering cooler pipe from the frame.
  8. Secure the power steering cooler.
  9. Remove the stabilizer shaft links and rotate the stabilizer shaft up in order to gain access to the mounting bolts on the power steering gear.
  10. Remove the mounting bolts.
  11. Secure the power steering gear.
  12. Remove the nuts that secure the engine mount to the frame. See «ENGINE MOUNT STRUT BRACKET»(/buick/century/vi-1997-2005/remont/automatic-trans/#automatic-transaxle-removal-installation).
  13. Remove the nuts which secure the transaxle mount to the frame.
  14. Disconnect both front wheel speed sensor connectors (1), if equipped. (Scheme 382)
  15. Remove both speed harness retainers (2) from the frame and the lower control arms, if equipped. (Scheme 382)
  16. Separate both of the lower ball joints from the steering knuckle. See appropriate FRONT article in SUSPENSION.
  17. Lower the vehicle until the frame contacts Universal Engine Support Table (J-39580).
  18. Remove and DISCARD the bolts which secure the front frame to the body. (Scheme 383)
  19. Remove and DISCARD the bolts which secure the front frame to the body. (Scheme 384)
  20. Raise the vehicle in order to separate the frame from the body.
  21. If you are replacing the frame, remove the following components: Both of the lower control arms. The stabilizer shaft. The spacers, the upper insulator, the lower insulator, and the retainers.
  1. If you are replacing the frame, install the following components: Both of the lower control arms. The stabilizer shaft. The spacers, the upper insulator, the lower insulator, and the retainers.
  2. Position the engine support table with the frame under the vehicle.
  3. Lower the vehicle to the frame.
  4. Loosely install the bolts which secure the rear frame to the body. (Scheme 384)
  5. Loosely install the bolts which secure the front frame to the body. (Scheme 383)
  6. Align the frame to the body by inserting two 0.74" X 8.0" (19 X 203 mm) pins in the alignment holes on the right side of the frame.
  7. Install the frame bolts. Tighten to bolts to specification. See «TORQUE SPECIFICATIONS»(/buick/century/vi-1997-2005/remont/automatic-trans/#automatic-transaxle-removal-installation__torque-specifications).
  8. Connect both the lower ball joints to the steering knuckle. See appropriate FRONT article in SUSPENSION.
  9. Install the nuts which secure the engine mount to the frame. See «ENGINE MOUNT STRUT BRACKET»(/buick/century/vi-1997-2005/remont/automatic-trans/#automatic-transaxle-removal-installation).
  10. Install the nuts which secure the transaxle mount to the frame.
  11. Install the steering gear mounting bolts.
  12. Install the stabilizer shaft links.
  13. Connect both speed sensor connectors (1) to the front wheels, if equipped. (Scheme 382)
  14. Install both front wheel speed harness retainers (2) to the frame and to the lower control arm, if equipped. (Scheme 382)
  15. Install the positive battery cable and retainers to the frame.
  16. Install the power steering cooler pipe.
  17. Install the radiator lower air deflector.
  18. Connect the fog lamp electrical connectors.
  19. Connect the fog lamp electrical connectors.
  20. Install the front wheels. Tighten lug nuts to specification. See «TORQUE SPECIFICATIONS»(/buick/century/vi-1997-2005/remont/automatic-trans/#automatic-transaxle-removal-installation__torque-specifications).
  21. Lower the vehicle.
  22. Remove the engine support fixture. See «ENGINE SUPPORT FIXTURE»(/buick/century/vi-1997-2005/remont/automatic-trans/#automatic-transaxle-removal-installation).
  23. Inspect the front wheel alignment. See appropriate SPECIFICATIONS & PROCEDURES article in SUSPENSION.

Scheme 385

Scheme 385: Removal
  1. Raise and support the vehicle.
  2. Remove the right front tire and wheel.
  3. Remove the transaxle brace bolts. (Scheme 385)
  4. Remove the transaxle brace. (Scheme 385)
  1. Install the transaxle brace. (Scheme 385)
  2. Hand start the bolts to the engine and to the transaxle. (Scheme 385)
  3. Install the transaxle brace bolts to the transaxle. Tighten the transaxle brace bolts-to-transaxle to specification. See «TORQUE SPECIFICATIONS»(/buick/century/vi-1997-2005/remont/automatic-trans/#automatic-transaxle-removal-installation__torque-specifications).
  4. Install the transaxle brace bolts to the engine. Tighten the transaxle brace bolts-to-engine to specification. See «TORQUE SPECIFICATIONS»(/buick/century/vi-1997-2005/remont/automatic-trans/#automatic-transaxle-removal-installation__torque-specifications).
  5. Install the right front tire and wheel. Tighten to specification. See «TORQUE SPECIFICATIONS»(/buick/century/vi-1997-2005/remont/automatic-trans/#automatic-transaxle-removal-installation__torque-specifications).
  6. Lower the vehicle.

TORQUE SPECIFICATIONS

ApplicationFt. Lbs. (N.m)
Air Conditioning Compressor Mount Bolts37 (50)
Battery Negative Cable12 (16)
Engine Ground Wire18 (25)
Engine Mount Strut Bracket
Horizontal & Vertical19 (26)
3.1L (Left Side)52 (70)
3.1L (Right Side)37 (50)
3.8L (Right Side)35 (48)
To-Upper Radiator Support21 (28)
Frame Bolts133 (180)
PNP Switch Bolts18 (25)
Starter Bolts32 (43)
Transaxle Brace-To-Engine Bolts46 (63)
Transaxle Brace-To-Transaxle Bolts32 (43)
Transaxle Bolts (Upper/Lower)55 (75)
Transaxle Mount Lower Nuts35 (47)
Transaxle Range Selector Nut18 (25)
Transaxle-To-Engine Bolt55 (75)
Transaxle Wiring Harness18 (25)
Torque Converter Bolts46 (63)
Wheel Lug Nuts100 (140)
INCH Lbs. (N.m)
Air Cleaner Intake Duct Clamps18 (2)
Transaxle Fluid Filler Tube Bolt115 (13)

TORQUE SPECIFICATIONS