Contents Wiring diagrams Section: Automatic Trans All sections

Automatic Transmission Servicing Buick LeSabre VIII

Automatic Trans 71 illustrations ~7716 words

APPLICATION

ApplicationTransaxle Model (RPO Code)
Buick
LeSabre4T65-E (MN3 Or M15)
Park Avenue4T65-E (MN3 Or MN7)
Pontiac Bonneville4T65-E (MN3, MN7 Or M15)

TRANSAXLE APPLICATION

IDENTIFICATION

Transaxle has a metal identification plate or Service Replacement Transmission Assembly (SRTA) plate attached to rear face of transaxle. (Scheme 274) Transaxle RPO codes are MN3, MN7 or M15. The MN3 and MN7 are heavy duty models and have 10.2" (258 mm) torque converters. The M15 model has a 9.6" (245 mm) torque converter.

Scheme 274

Scheme 274: IDENTIFICATION

OIL PAN GASKET

Note. Refer to illustration for oil pan gasket identification. (Scheme 275)

Scheme 275

Scheme 275: OIL PAN GASKET

SERVICE INTERVALS

Change the ATF and filter every 50,000 miles if the vehicle is mainly driven under one or more of these conditions

  1. In heavy traffic where the outside temperature regularly reaches 90°F (32°C) or higher.
  2. In hilly or mountainous terrain.
  3. When doing frequent towing.
  4. Uses such as found in taxi, police or delivery service.

If the vehicle is not used under any of these conditions, change the fluid and filter every 100,000 miles.

CHECKING FLUID LEVEL & CONDITION

  1. Start the engine and allow the engine to idle until the transaxle has reached 180-200°F (82-93°C). Depress the brake pedal and move the shift lever through the gear ranges, pausing a few seconds in each gear. Is the fluid Red or Light Brown? If so, go to step 4 . If not, go to next step.
  2. Does the fluid have a burnt odor or a Dark Brown color? If so, go to step 11 . If not, go to next step.
  3. Does the fluid have a cloudy or milky appearance? If so, go to step 10 . If not, go to next step.
  4. Check the fluid level. The vehicle must be level, with the engine running and the shift lever in the Park range. Check both sides of the fluid level indicator, and read the lower level. The proper fluid level should be in the middle of the cross-hatch. Is the fluid level too high? If so, go to step 9 . If not, go to next step.
  5. Is the fluid level low? If not, system is okay. If so, go to next step.
  6. Add DEXRON-III(R) ATF in increments of 17 oz. (0.5L) until the fluid is in the middle of the cross-hatch. Check both sides of the fluid level indicator, and read the lower level. Did you add more than 51 oz. (1.5L) to the transaxle? If not, go to step 9 . If so, go to next step.
  7. Check for external leaks. Did you find any leaks? If not, go to step 15 . If so, go to next step.
  8. Correct the leak condition. Did you correct the leak condition? If so, go to step 15 .
  9. Remove any excess fluid to the proper level, the middle of the cross-hatch. Is the fluid level satisfactory? If so, system is okay.
  10. The transaxle is contaminated with engine coolant. Replace the cooler. Is the replacement complete? If so, go to step 12 .
  11. Drain the fluid to determine if the fluid is contaminated. A very small amount of material in the bottom pan is a normal condition, but large pieces of metal or other material in the bottom pan require a transaxle overhaul. Was the fluid contaminated? If so, go to step 13 . If not, go to next step.
  12. Overhaul the transaxle. See appropriate OVERHAUL article in AUTOMATIC TRANSMISSIONS. Is the overhaul complete? If so, go to next step.
  13. Flush the cooler. See «OIL COOLER FLUSHING»(/buick/lesabre/viii-2000-2005/remont/automatic-trans/#automatic-transmission-servicing__oil-cooler-flushing) . Has the cooler been flushed? If so, go to next step.
  14. Change the fluid and the filter. See «DRAINING & REFILLING»(/buick/lesabre/viii-2000-2005/remont/automatic-trans/#automatic-transmission-servicing__draining-refilling) . Is the procedure complete? If so, go to next step.
  15. Add new fluid to the proper level, in the middle of the cross-hatch. Is the procedure complete? If so, system is okay.

Manufacturer recommends DEXRON-III(R) ATF. Fill transaxle with appropriate quantity. See FLUID CAPACITIES .

FLUID CAPACITIES

ApplicationBottom Pan Removal - Qts. (L)Overhaul - Qts. (L)Dry - Qts. (L)
4T65-E7.4 (7.0)10.0 (9.5)13.4 (12.7)
(1) Fluid capacities listed are approximate. Always fill to specified area on dipstick. See CHECKING FLUID LEVELS & CONDITION .
(1)Fluid capacities listed are approximate. Always fill to specified area on dipstick. See CHECKING FLUID LEVELS & CONDITION .

TRANSAXLE FLUID CAPACITIES (1)

DRAINING & REFILLING

  1. Raise and support the vehicle. Place the drain pan under the transaxle oil pan.
  2. Remove the oil pan bolts from only the front and the sides. Loosen the rear oil pan bolts about 4 turns. Lightly tap the oil pan with a rubber mallet or pry in order to allow the fluid to drain.
  3. Inspect the fluid color. Remove the remaining oil pan bolts. Remove the oil pan (24) and the gasket (25). (Scheme 276) Remove the oil filter. Use a long screwdriver in order to pry the oil filter neck out of the seal.
  4. Check the oil filter seal for damage or wear. As needed, remove the seal using the Slide Hammer (J-6125-1B) and the Universal Seal Remover (J-23129). Install a new seal, as needed.
  5. Before installing, coat the new seal with a small amount of Transmission Assembly Lubricant (J-36850) or petroleum jelly. Install a new filter into the case. (Scheme 277)
  6. Install the oil pan (24) and the gasket (25) at the same time. (Scheme 276) Install the oil pan bolts. Tighten the bolts to specification. See «TORQUE SPECIFICATIONS»(/buick/lesabre/viii-2000-2005/remont/automatic-trans/#automatic-transmission-servicing__torque-specifications).
  7. Lower the vehicle. Fill the transaxle to the proper level. Inspect the transmission fluid level. See «CHECKING FLUID LEVEL & CONDITION»(/buick/lesabre/viii-2000-2005/remont/automatic-trans/#automatic-transmission-servicing__checking-fluid-level-condition). Inspect the oil pan gasket for leaks.

Scheme 276

Scheme 276

Scheme 277

Scheme 277

OIL COOLER FLUSHING

CAUTIONThe Flushing Fluid (J-35944-22) is environmentally safe, yet powerful enough to cut through transmission fluid to dislodge any contaminants from the cooler. The safety precautions on the label regarding potential skin and eye irritations associated with prolonged exposure are typical precautions that apply to many similar cleaning solutions. It should be noted that according to General Motors, use of other non-approved fluids for cooler flushing can have an adverse reaction to the seals inside the transaxle.
CAUTIONDo not use solutions that contain alcohol or glycol. Use of solutions that contain alcohol or glycol may damage flushing equipment, oil cooler components and/or transaxle components.

Note. GM studies indicate that plugged or restricted transaxle oil coolers and pipes cause insufficient transaxle lubrication and elevated operating temperatures which can lead to premature transaxle wear-out. Many cases could have been prevented by following published procedures for transaxle oil cooler flushing and flow checking. This procedure includes flushing and flow checking the auxiliary oil cooler, if equipped. GM requires that oil cooler flushing and flow checking be performed whenever a transaxle is removed from the vehicle for service within warranty, including: Goodwin, SWAT, major overhaul, torque converter replacement and oil pump replacement.

Preparation

  1. After the repair or replacement transaxle is installed in the vehicle, do not reconnect the oil cooler pipes.
  2. Remove the fill cap (9) on the Transmission Oil Cooler and Line Flusher (J-35944-A) and fill the flusher tank (4) with 20 oz. (0.6L) of flushing fluid using the measuring cup (6). Do not overfill. Install the fill cap (9) on the transmission oil cooler and line flusher and pressurize the flusher tank (4) to 80-100 psi, using the shop air supply at the tank air valve (9). (Scheme 278)
  3. Connect the transmission oil cooler and line flusher discharge hose (5) to the oil cooler return pipe (top connector). Clip the discharge hose (5) onto the oil drain container. Attach the transmission oil cooler and line flusher to the undercarriage of the vehicle with the hook provided, and connect the flushing system feed supply hose (3) from the transmission oil cooler and line flusher to the oil cooler feed pipe (bottom connector).
  4. With the water supply valve (1) on the transmission oil cooler and line flusher in the OFF position, connect the water supply hose (7) from the transmission oil cooler and line flusher to the water supply at the faucet. (Scheme 278)and (Scheme 279). Turn ON the water supply at the faucet.

Scheme 278

Scheme 278

Scheme 279

Scheme 279

Initial Flush

  1. Turn the transmission oil cooler and line flusher water supply valve (1) to the ON position and allow water to flow through the oil cooler and pipes for 10 seconds to remove any remaining transmission fluid. (Scheme 280) If water does not flow through the oil cooler and pipes, the cause of the blockage must be diagnosed and the plugged component must be repaired or replaced. Continue with the cooler flushing and flow check procedure once the blockage is corrected.
  2. Turn the transmission oil cooler and line flusher water supply valve (1) to the OFF position and clip the discharge hose (5) onto a 5 gallon (19L) pail with a lid, to avoid splashback. (Scheme 281) Turn the transmission oil cooler and line flusher water supply valve (1) to the ON position and depress the trigger (8) to mix cooler flushing solution into the water flow. (Scheme 278) Use the clip provided on the handle to hold the trigger (8) down. The discharge will foam vigorously when the solution is introduced into the water stream.
  3. Flush the oil cooler and pipes with water and solution for 2 minutes. During this flush, attach the shop air supply of 120 psi to the flushing system feed air valve (2) located on the transmission oil cooler and line flusher for 3-5 seconds at the end of every 15-20 second interval to create a surging action.
  4. Release the trigger (8) and turn the transmission oil cooler and line flusher water supply valve (1) to the OFF position.

Scheme 280

Scheme 280

Scheme 281

Scheme 281

Back Flush

  1. Disconnect both hoses from the oil cooler pipes and then connect them to the opposite oil cooler pipe. This will allow the oil cooler and pipes to be back flushed. Repeat steps 2 and 3 of the INITIAL FLUSH procedure. Release the trigger (8) of the transmission oil cooler and line flusher and allow water only to rinse the oil cooler and pipes for one minute.
  2. Turn the transmission oil cooler and line flusher water supply valve (1) to the OFF position and turn OFF the water supply at the faucet. (Scheme 279) Attach the shop air supply to the flushing system feed air valve (2) on the transmission oil cooler and line flusher, and blow out the water from the oil cooler and pipes. Continue until no water comes out of the discharge hose (5).

Flow Check

  1. Disconnect both hoses from the oil cooler pipes. Connect the oil cooler feed pipe (vertical/top connector) to the transaxle and the return pipe (horizontal/bottom connector) to the discharge hose (5). Clip the discharge hose (5) onto the empty oil drain container. (Scheme 281)
  2. Confirm the transaxle is filled with DEXRON-III(R) ATF. See «CHECKING FLUID LEVEL & CONDITION»(/buick/lesabre/viii-2000-2005/remont/automatic-trans/#automatic-transmission-servicing__checking-fluid-level-condition). Start the engine with the transaxle in Park range and run for 30 seconds. A minimum of 2 qts. (1.9L) must be discharged during this 30-second run time. If fluid flow is greater than 2 qts. (1.9L) in 30 seconds, go to next step. If fluid flow is less than 2 qts. (1.9L) in 30 seconds, perform the following diagnosis: Disconnect the oil cooler feed line at the radiator. Connect the discharge hose (5) to the cooler feed line. Clip the discharge hose (5) to the empty oil drain container. (Scheme 281) Start the engine with the transaxle in Park range and run for 30 seconds. A minimum of 2 qts. (1.9L) must be discharged during this 30-second run time. Do the following according to the flow rate: Insufficient feed flow: inspect the transaxle. Sufficient feed flow: inspect the oil cooler return pipe and the oil cooler (and auxiliary cooler, if equipped).
  3. Remove the discharge hose (5), reconnect the cooler feed and return pipes to the transaxle and refill the unit to the proper fluid level. Inspect the transaxle oil cooler pipe connections at the radiator, the auxiliary cooler (if equipped) and the transaxle for leaks.

Clean-up

Disconnect the water supply hose (7) from the transmission oil cooler and line flusher and bleed any remaining air pressure from the flusher tank (4). (Scheme 278) Remove the fill cap (9) from the transmission oil cooler and line flusher and return any unused flushing solution to its container. Rinse the transmission oil cooler and line flusher with water. Do not store the transmission oil cooler and line flusher with flushing solution in it. After every 3rd use, clean the transmission oil cooler and line flusher as described in the instructions included with the tool. Dispose of any waste water/solution and transmission fluid in accordance with local regulations.

ON-VEHICLE REPAIRS

Various components may be serviced without transaxle removal. For servicing of these components, see appropriate component under ADJUSTMENTS and/or REMOVAL & INSTALLATION . For additional information on servicing electrical components, see appropriate DIAGNOSIS article in AUTOMATIC TRANSMISSIONS.

ADJUSTMENTS

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 AIR BAG DEACTIVATION PROCEDURES article in GENERAL INFORMATION.

SHIFT CABLE

Note. Adjust the shift cable while the transaxle and while the gear selector are in the Neutral position only. Failure to do so may cause misadjustment of shift cable.

  1. Set the parking brake. Block the wheels. Remove the shift cable terminal from the transaxle manual shaft lever pin.
  2. Use an appropriate tool to pry on the shift cable terminal at the manual control lever pin to remove the shift cable terminal from the manual control lever pin. (Scheme 282) Prying or pulling up on any other part of the shift cable may result in damage to the shift cable.
  3. Fully lift the adjuster lock button. Ensure the adjuster is free to move. Place the transaxle manual shaft lever in (N) Neutral. In order to find (N) Neutral, rotate the lever fully counterclockwise to (P) Park, and then clockwise 2 clicks into (N) Neutral.
  4. Place the gear shifter inside the car to the (N) Neutral position. If adjusting a column shift vehicle, rotate the shift lever to the LOW 1 position, fully down. Push forward and upward slowly past the first click, which is overdrive, until it stops solidly at the 2nd click. It is in (N) Neutral.
  5. Underhood, grasp the shift cable terminal and pull it toward the pin on the manual shaft lever. The shift cable adjuster spring should compress as the terminal is moved toward the pin.
  6. Attach the pin to the lever by pushing down carefully until it snaps. Do not pull the terminal beyond the pin and then push back. This action could move the shifter out of (N) Neutral.
  7. Press the adjuster lock button down flush with the adjuster body. (Scheme 283) Shift to (P) Park and release the parking brake while applying the service brake. Start the engine and assure all of the indicated gear positions match the vehicle response.

Scheme 282

Scheme 282

Scheme 283

Scheme 283

REMOVAL & INSTALLATION

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 AIR BAG DEACTIVATION PROCEDURES article in GENERAL INFORMATION.
CAUTIONWhen battery is disconnected, vehicle computer and memory systems 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.

Note. Some removal and installation procedures may require the removal of engine and/or transaxle mounts. For procedures related to these components, see appropriate REMOVAL & INSTALLATION article.

Removal

  1. Raise and support the vehicle. Remove the oil filter. See «DRAINING & REFILLING»(/buick/lesabre/viii-2000-2005/remont/automatic-trans/#automatic-transmission-servicing__draining-refilling) under LUBRICATION.
  2. Remove the accumulator bolts. (Scheme 284) Remove the manual 2-1 band servo cover bolts.
  3. Remove the lube oil pipe from the front differential carrier internal gear lube hole. (Scheme 286) Remove the accumulator and the manual 2-1 band servo cover as a assembly. Remove the manual 2-1 band servo cover. Remove the manual 2-1 band servo. (Scheme 285)
  4. To disassemble, inspect and service the accumulator and 2-1 manual servo, see appropriate OVERHAUL article in AUTOMATIC TRANSMISSIONS.

Scheme 284

Scheme 284

Scheme 285

Scheme 285

Scheme 286

Scheme 286

Installation

  1. If disassembled, assemble the 2-1 band servo. See appropriate OVERHAUL article in AUTOMATIC TRANSMISSIONS. Install the manual 2-1 band servo. The seal must be installed as shown. If it is not installed, or is installed in the wrong location, the transaxle will operate only in Reverse. (Scheme 285)
  2. Install the lube oil pipe to the front differential carrier internal gear lube hole. (Scheme 286) Position the manual 2-1 band servo cover and accumulator into place.
  3. Install the manual 2-1 band servo cover bolts. Tighten the manual 2-1 band servo cover bolts to specification. Install the accumulator attaching bolts. Tighten the accumulator attaching bolts to specification. See «TORQUE SPECIFICATIONS»(/buick/lesabre/viii-2000-2005/remont/automatic-trans/#automatic-transmission-servicing__torque-specifications).
  4. If removed, install the new filter seal. Install the filter. Install the oil pan. See «DRAINING & REFILLING»(/buick/lesabre/viii-2000-2005/remont/automatic-trans/#automatic-transmission-servicing__draining-refilling) under LUBRICATION. Lower the vehicle. Fill transaxle with appropriate fluid to proper level. See «LUBRICATION»(/buick/lesabre/viii-2000-2005/remont/automatic-trans/#automatic-transmission-servicing).
  1. Raise the vehicle. Support the vehicle. Remove the vehicle speed sensor. See «VEHICLE SPEED SENSOR»(/buick/lesabre/viii-2000-2005/remont/automatic-trans/#automatic-transmission-servicing). Remove the right front tire and the wheel assembly.
  2. Remove the right drive axle from the vehicle. See appropriate article in DRIVE AXLES. Remove the case extension bolts. (Scheme 288)
  3. Loosen the torque strut bracket to engine bolts as needed. (Scheme 287) Swing the bracket out of the way. Remove the case extension assembly and the seal. Remove the thrust bearing and the thrust bearing washer.

Scheme 287

Scheme 287

Scheme 288

Scheme 288
  1. Install the washer and the thrust bearing onto the final drive assembly. Use the Transmission Assembly Lubricant (J-36850) or the equivalent (petroleum jelly), in order to retain the washer and the bearing. Install the seal and the case extension. (Scheme 288)
  2. Install the case extension housing bolts. Tighten the case extension housing bolts to specification. See «TORQUE SPECIFICATIONS»(/buick/lesabre/viii-2000-2005/remont/automatic-trans/#automatic-transmission-servicing__torque-specifications).
  3. Install the torque strut bracket to engine bolts. (Scheme 287) Install the right drive axle to the transaxle. See appropriate article in DRIVE AXLES. Install the vehicle speed sensor. See «VEHICLE SPEED SENSOR»(/buick/lesabre/viii-2000-2005/remont/automatic-trans/#automatic-transmission-servicing). Lower the vehicle.
  4. Fill transaxle with appropriate fluid to proper level. See «LUBRICATION»(/buick/lesabre/viii-2000-2005/remont/automatic-trans/#automatic-transmission-servicing). Inspect for fluid leaks.
CAUTIONThe wheels of the vehicle must be straight ahead and the steering column in the LOCK position before disconnecting the steering column or intermediate shaft from the steering gear. Failure to do so will cause the SIR coil assembly to become uncentered, which may cause damage to the coil assembly.
  1. Lock the steering column by installing Steering Column Anti-Rotation Pin (J-42640) into the underside of the steering column. (Scheme 289) Disconnect the negative battery cable. Remove the air cleaner assembly.
  2. Remove both the throttle and the cruise control cables (1) from the throttle body and the accelerator control bracket (2). (Scheme 290) Use a large flat-blade tool in order to remove the shift cable from the manual selector lever. (Scheme 291) Remove the shift cable bracket from the transaxle case and set aside.
  3. Disconnect the transaxle harness connector C100 (2). (Scheme 292) Disconnect the wiring harness (3) from the wiring harness retainer (1) on the transaxle. Remove the ground cable bolt (1) from the transaxle. (Scheme 293)
  4. Install the engine support fixture. See appropriate REMOVAL & INSTALLATION article. Raise and support the vehicle. Remove the left front tire and wheel assembly. Remove the left inner wheelhouse filler (2). (Scheme 294)
  5. Remove the front air deflector. Remove the left tie rod end from the steering knuckle. See appropriate POWER RACK & PINION article in STEERING. Remove the left ball joint from the steering knuckle. See appropriate FRONT article in SUSPENSION. Remove the left drive axle from the transaxle. See appropriate article in DRIVE AXLES.
  6. Remove the intermediate shaft lower pinch bolt. (Scheme 295) Disconnect the intermediate shaft from the power steering gear. Remove the power steering gear heat shield. See appropriate POWER RACK & PINION article in STEERING. Remove the power steering gear mounting bolts. (Scheme 296)
  7. Remove the power steering line retainers from the frame. Secure the power steering gear to the exhaust manifold. Remove the 4 nuts securing the catalytic converter to the exhaust manifold pipe.
  8. Separate the catalytic converter from the exhaust manifold pipe. Suitably secure the exhaust system to the underside of the vehicle. Remove the catalytic converter gasket. Do not reuse the gasket.
  9. Loosen the 2 mounting nuts (2) in order to allow removal of the brake pressure modulator valve (1) from the bracket (3). (Scheme 297) Remove the brake line retainers from the frame. Remove the left transaxle mount.
  10. Remove the 2 lower bolts and lower nut from the rear transaxle mount. (Scheme 298) Remove the lower nut from the front transaxle mount. Support the left side of the frame with an appropriate jack.
  11. Remove the 3 frame-to-body bolts on the left side. See appropriate REMOVAL & INSTALLATION. Loosen, but do not remove, the 3 frame-to-body bolts on the right side.
  12. Carefully lower the left side of the frame and let hang. Lower the vehicle enough to gain access to the engine support fixture. Using the engine support fixture, carefully lower the transaxle in order to allow access to the case side cover.
  13. Raise the vehicle enough to gain access to the transaxle case side cover. Remove the left transaxle bracket from the case side cover. See «LEFT TRANSAXLE MOUNT & BRACKET»(/buick/lesabre/viii-2000-2005/remont/automatic-trans/#automatic-transmission-servicing). Remove the case side cover bolts. (Scheme 299) Remove the case side cover (53). (Scheme 300) Clean the case and side cover gasket surfaces.

Scheme 289

Scheme 289

Scheme 290

Scheme 290

Scheme 291

Scheme 291

Scheme 292

Scheme 292

Scheme 293

Scheme 293

Scheme 294

Scheme 294

Scheme 295

Scheme 295

Scheme 296

Scheme 296

Scheme 297

Scheme 297

Scheme 298

Scheme 298

Scheme 299

Scheme 299

Scheme 300

Scheme 300
  1. Inspect the case side cover (53) for the following conditions: Damaged or porous gasket sealing surfaces. Damaged or porous casting surfaces. Damaged or stripped bolt holes.
  2. Inspect the case side cover gaskets (54, 59) for damage. (Scheme 300) The gaskets are reusable if they are NOT damaged. Assemble the case side cover inner gasket (59) to the case side cover (53).
  3. Use Transmission Assembly Lubricant (J-36850) on the seal surfaces. Install the case side cover gasket (54) and case side cover (53) onto the case. Make sure the gaskets and electrical connector are positioned correctly.
  4. Install case side cover bolt and one side cover to case stud bolt in the locations shown. (Scheme 299) These bolts will properly locate the case side cover and gasket to the case.
  5. Install the remaining bolts as indicated: 9 case side cover flange bolts. 4 side cover TORX(R) head bolts. 4 side cover to case stud bolts. Tighten all bolts to specification. See «TORQUE SPECIFICATIONS»(/buick/lesabre/viii-2000-2005/remont/automatic-trans/#automatic-transmission-servicing__torque-specifications).
  6. Install the left transaxle bracket (1) to the case side cover. See «LEFT TRANSAXLE MOUNT & BRACKET»(/buick/lesabre/viii-2000-2005/remont/automatic-trans/#automatic-transmission-servicing). Install the left transaxle bracket bolts. Tighten the left transaxle bracket bolts to specification. Lower the vehicle enough to gain access to the engine support fixture.
  7. Using the engine support fixture, carefully raise the transaxle to it's original position. Raise vehicle. Using an appropriate jack, carefully raise the left side of the frame so that the frame-to-body bolts can be installed.
  8. Using 0.630" in. (16 mm) dowel pins in the alignment holes (1), align the engine frame (2) with the body. (Scheme 301) Install the frame-to-body bolts (3). Tighten the bolts to specification. See «TORQUE SPECIFICATIONS»(/buick/lesabre/viii-2000-2005/remont/automatic-trans/#automatic-transmission-servicing__torque-specifications).
  9. Install the left transaxle mount. Install the lower nut (1) onto the front transaxle mount. (Scheme 302) Tighten the nut to specification. Install the 2 lower bolts and lower nut onto the rear transaxle mount (Scheme 298) Tighten the 2 lower bolts and lower nut to specification. See «TORQUE SPECIFICATIONS»(/buick/lesabre/viii-2000-2005/remont/automatic-trans/#automatic-transmission-servicing__torque-specifications).
  10. Position the brake pressure modulator valve (1) into the bracket (3). (Scheme 297) Tighten the 2 brake pressure modulator valve nuts (2) to specification. See «TORQUE SPECIFICATIONS»(/buick/lesabre/viii-2000-2005/remont/automatic-trans/#automatic-transmission-servicing__torque-specifications). Install the brake line retainers onto the frame. Place a NEW catalytic converter gasket over the catalytic converter studs.
  11. Position the catalytic converter onto the exhaust manifold pipe. Install the 4 catalytic converter nuts. Tighten the catalytic converter nuts to specification. See «TORQUE SPECIFICATIONS»(/buick/lesabre/viii-2000-2005/remont/automatic-trans/#automatic-transmission-servicing__torque-specifications). Install the power steering gear. See appropriate POWER RACK & PINION article in STEERING. Install the power steering line retainers onto the frame. Install the power steering gear heat shield.
  12. Connect the intermediate shaft to the power steering gear. Install the intermediate shaft lower pinch bolt. Tighten the bolt to 33 ft. lbs. (45 N.m). Install the drive axle into the transaxle. Install the ball joint into the steering knuckle. Install the tie rod end into the steering knuckle.
  13. Install the front air deflector. Install the inner wheelhouse filler (2). Install the left front tire and wheel assembly. Lower the vehicle. Remove the engine support fixture. Install the ground cable bolt (1) onto the transaxle. (Scheme 293) Tighten the ground cable bolt to specification. See «TORQUE SPECIFICATIONS»(/buick/lesabre/viii-2000-2005/remont/automatic-trans/#automatic-transmission-servicing__torque-specifications).
  14. Install the shift cable bracket and cable onto the transaxle case. Install the shift cable bracket nuts. Tighten the shift cable bracket nuts to specification. See «TORQUE SPECIFICATIONS»(/buick/lesabre/viii-2000-2005/remont/automatic-trans/#automatic-transmission-servicing__torque-specifications).
  15. Install the shift cable onto the manual selector lever. Check adjustment of the shift cable. Re-adjust as needed.
  16. Connect the transaxle electrical connector C100 (2). (Scheme 292) Install the wiring harness (3) into the wiring harness retainer (1) on the transaxle. Install the throttle and cruise control cables (1) into the throttle body and the accelerator control bracket (2). (Scheme 290)
  17. Install the air cleaner assembly. Connect the negative battery cable. Remove the steering column anti-rotation pin from the steering column.
  18. Fill transaxle with appropriate fluid to proper level. See «LUBRICATION»(/buick/lesabre/viii-2000-2005/remont/automatic-trans/#automatic-transmission-servicing). Inspect for fluid leaks. Check the front end alignment.

Scheme 301

Scheme 301

Scheme 302

Scheme 302
  1. Remove the case side cover. See «CASE SIDE COVER»(/buick/lesabre/viii-2000-2005/remont/automatic-trans/#automatic-transmission-servicing). Remove the wiring harness as necessary. Remove the oil pump. See «OIL PUMP»(/buick/lesabre/viii-2000-2005/remont/automatic-trans/#automatic-transmission-servicing). Remove the valve body to channel plate bolts (374-381 and 384). (Scheme 303)
  2. Remove the valve body (300) while keeping the spacer plate (370) with the transaxle. (Scheme 304) Remove the ball check valves (372 and 373) from the valve body. (Scheme 305)
  3. Remove the spacer plate (370) and gasket. (Scheme 306) Remove the ball check valves (372) from the case cover. (Scheme 307) Inspect each check valve seat in the spacer plate (370) for excessive peening. (Scheme 308)
  4. Place a ball check valve (372) on each seat and use a flashlight in order to look for visible light between the valve and the seat. Inspect all components removed from the transaxle. See appropriate OVERHAUL article in AUTOMATIC TRANSMISSIONS.

Scheme 303

Scheme 303

Scheme 304

Scheme 304

Scheme 305

Scheme 305

Scheme 306

Scheme 306

Scheme 307

Scheme 307

Scheme 308

Scheme 308

Note. The assembly of some components will require the use of an assembly lube. Always use Transmission Assembly Lubricant (J-36850) or petroleum jelly during assembly. Greases other than the recommended assembly lube will change the transmission fluid characteristics and cause undesirable shift conditions and/or filter clogging.

  1. Install the ball check valves (372) into the case cover. (Scheme 307) Use the transmission assembly lubricant to retain the ball check valves in their proper locations. Install the gasket and the spacer plate (370). (Scheme 306)
  2. Install the ball check valves (372 and 373) into the valve body. (Scheme 305) Use the transmission assembly lubricant to retain the ball check valves in their proper locations.
  3. Install the gasket (371) and the valve body (300). (Scheme 304) Install the valve body bolts (374-381 and 384). (Scheme 303)
  4. Tighten the valve body bolts as follows: M6 X 1.0 X 20 - 70 INCH lbs. (8 N.m). M6 X 1.0 X 30 - 106 INCH lbs. (12 N.m). M6 X 1.0 X 45 - 106 INCH lbs. (12 N.m). M6 X 1.0 X 55 - 97 INCH lbs. (11 N.m). M6 X 1.0 X 60 - 106 INCH lbs. (12 N.m). M6 X 1.0 X 65 - 106 INCH lbs. (12 N.m). M6 X 1.0 X 85 - 97 INCH lbs. (11 N.m). M6 X 1.0 X 90 - 97 INCH lbs. (11 N.m). M8 X 1.0 X 90 - 18 ft. lbs. (25 N.m).
  5. DO NOT use impact type tools on the valve body or on the oil pump. Install the oil pump. See «OIL PUMP»(/buick/lesabre/viii-2000-2005/remont/automatic-trans/#automatic-transmission-servicing). Install the wiring harness. Install the case side cover. See «CASE SIDE COVER»(/buick/lesabre/viii-2000-2005/remont/automatic-trans/#automatic-transmission-servicing). Fill transaxle with appropriate fluid to proper level. See «LUBRICATION»(/buick/lesabre/viii-2000-2005/remont/automatic-trans/#automatic-transmission-servicing). Inspect for fluid leaks.

Remove the indicator. Raise and support the vehicle. Disconnect the 3-way catalytic converter pipe. Remove the fluid filler tube bracket bolt from the fluid filler tube bracket. (Scheme 309) Remove the fluid filler tube. Remove filler tube seal.

Scheme 309

Scheme 309: Removal

Install the fluid filler tube seal in the transaxle. Apply some DEXRON-III(R) ATF or equivalent to the inside diameter of the seal. Lower the vehicle. Position the fluid filler tube. Install the fluid filler tube bracket bolt through the fluid filler tube bracket. Tighten the fluid filler tube bracket bolt to specification. See TORQUE SPECIFICATIONS . Install the indicator. Fill transaxle with appropriate fluid to proper level. See LUBRICATION . Inspect for fluid leaks.

Remove the case side cover. See CASE SIDE COVER. Remove the end of the wiring harness assembly with fluid temperature sensor from the retaining clip. (Scheme 310) Disconnect the wiring harness assembly from the fluid temperature sensor. Remove the fluid temperature sensor.

Scheme 310

Scheme 310: Removal

Connect the wiring harness connector to the fluid temperature sensor. (Scheme 310) Install the wiring harness and fluid temperature sensor into the retaining clip. Install the case side cover. See CASE SIDE COVER. Fill transaxle with appropriate fluid to proper level. See LUBRICATION. Inspect for fluid leaks.

  1. Raise and support the vehicle. Remove the power steering gear heat shield. Remove the power steering pressure hose from the rack and pinion and hang from the exhaust pipe. See appropriate POWER RACK & PINION article in STEERING.
  2. Remove the power steering return hose from the rack and pinion and hang from the exhaust pipe. See appropriate POWER RACK & PINION article in STEERING. Support the transaxle with a transaxle support stand.
  3. Remove the rear transaxle mount and bracket bolts then position the mount and bracket aside. See appropriate REMOVAL & INSTALLATION article. Position a drain pan under the forward servo cover.
  4. Using a long screwdriver in order to pry against the vehicle frame. Hold the servo assembly compressed. (Scheme 311) Remove the 3 bolts attaching the servo cover to the transaxle case. (Scheme 312)
  5. Remove the long screwdriver. The servo assembly will push the servo cover out. If the servo cover does not push out, tap it with a rubber mallet.
  6. Remove the forward servo cover O-ring. Remove the servo piston assembly. Remove the servo spring.

Scheme 311

Scheme 311

Scheme 312

Scheme 312
  1. Install the servo spring. Install the servo piston assembly. Install the forward servo cover O-ring. Install the forward servo cover. (Scheme 312)
  2. Using a long screwdriver in order to pry against the vehicle frame. Hold the servo assembly compressed. (Scheme 311) Install the 3 forward servo cover attaching bolts. Tighten the forward servo cover attaching bolts to specification. See «TORQUE SPECIFICATIONS»(/buick/lesabre/viii-2000-2005/remont/automatic-trans/#automatic-transmission-servicing__torque-specifications).
  3. Remove the drain pan from under the forward servo cover. Align the rear transaxle mount and bracket then Install the mount and bracket bolts. See appropriate REMOVAL & INSTALLATION article.
  4. Remove the transaxle support stand. Install the power steering pressure hose. Install the power steering return hose. See appropriate POWER RACK & PINION article in STEERING.
  5. Install the power steering gear heat shield. See appropriate POWER RACK & PINION article in STEERING. Lower the vehicle. Fill transaxle with appropriate fluid to proper level. See «LUBRICATION»(/buick/lesabre/viii-2000-2005/remont/automatic-trans/#automatic-transmission-servicing).
  1. Remove the case side cover. See «CASE SIDE COVER»(/buick/lesabre/viii-2000-2005/remont/automatic-trans/#automatic-transmission-servicing).
  2. Disconnect the transaxle wiring harness. Remove the input speed sensor clip (441) from the case cover. (Scheme 313)
  3. Remove the input speed sensor (440) from the case cover. Inspect the input speed sensor (440) for the following conditions: Damaged or missing magnet. Damaged housing. Bent or missing electrical terminals. Damaged speed sensor clip (441).

Scheme 313

Scheme 313
  1. Install the input speed sensor (440) into the case cover. (Scheme 313)
  2. Install the input speed sensor clip (441) into the case cover.
  3. Connect the transaxle wiring harness.
  4. Install the case side cover. See «CASE SIDE COVER»(/buick/lesabre/viii-2000-2005/remont/automatic-trans/#automatic-transmission-servicing).
  1. Raise and support the vehicle. Remove the left front tire and wheel. Remove the left inner splash shield. Position a transaxle jack under the transaxle.
  2. Remove the mount stud nut from the mount stud to allow separation of the mount from the mount bracket. (Scheme 314) Remove the nut (4) and bolt (1) and the nuts (3) from the vehicle. (Scheme 315)
  3. Slowly lower the transaxle stand and remove the stand. Lower the vehicle. Remove the frame rail bolt retaining screws. (Scheme 316) Raise the vehicle.
  4. Push up on the frame rail bolts in order to clear the mount as the top of the mount is tilted away from the vehicle. Remove the mount (2) from the vehicle.
  5. Remove the 4 bolts securing the left transaxle mount bracket (1) to the side cover. (Scheme 317) Remove the left transaxle mount bracket (1) from the vehicle.

Scheme 314

Scheme 314

Scheme 315

Scheme 315

Scheme 316

Scheme 316

Scheme 317

Scheme 317
  1. Apply thread lock compound (GM P/N 12345493) or equivalent, to the 4 bolts that secure the left transaxle mount bracket to the case side cover.
  2. Install the left transaxle mount bracket (1) to the case side cover. (Scheme 317) Tighten the 4 left transaxle mount bracket bolts to specification. See «TORQUE SPECIFICATIONS»(/buick/lesabre/viii-2000-2005/remont/automatic-trans/#automatic-transmission-servicing__torque-specifications). Insert the mount stud into the transaxle mount bracket.
  3. Push up on the frame rail bolts in order to clear the mount (2) as the mount is rotated into the proper position. (Scheme 315) Make sure the loose frame rail bolts are properly aligned with and inserted into the mount.
  4. Lower the vehicle. Install the frame rail bolt retaining screws. (Scheme 316) Tighten the frame rail bolt retaining screws to specification. See «TORQUE SPECIFICATIONS»(/buick/lesabre/viii-2000-2005/remont/automatic-trans/#automatic-transmission-servicing__torque-specifications). Raise the vehicle.
  5. Install the mount bolt (1) and rotate counter clockwise to ensure anti-rotation tab locks behind mount bracket. (Scheme 315) Install the mount nuts (4) and (3). Tighten the mount nuts (4) and (3) to specification. See «TORQUE SPECIFICATIONS»(/buick/lesabre/viii-2000-2005/remont/automatic-trans/#automatic-transmission-servicing__torque-specifications).
  6. Using the transaxle stand, raise the powertrain and load the mount. Install the mount stud nut onto the mount stud. Tighten the mount stud nut to specification. See «TORQUE SPECIFICATIONS»(/buick/lesabre/viii-2000-2005/remont/automatic-trans/#automatic-transmission-servicing__torque-specifications).
  7. Remove the transaxle stand. Install the left wheelhouse extension. Install the left front tire and wheel. Lower the vehicle.

OIL COOLER HOSE/PIPES

Note. Allow sufficient clearance around the transaxle oil cooler pipes and around the hoses to prevent damage or wear which may cause fluid loss.

  1. Raise and support the vehicle. Position a drain pan under the vehicle. Remove the transaxle oil cooler hose retainer at the transaxle. (Scheme 318)
  2. Slide the white plastic covers away from the transaxle oil cooler hose quick connections. Disconnect the transaxle oil cooler hoses from the transaxle using the Cooler Quick Connect Tool (J-41623-B). (Scheme 319)
  3. Slide the white plastic covers away from the transaxle oil cooler hose quick connections. Disconnect the transaxle oil cooler hoses from the radiator using the cooler quick connect tool. Remove the transaxle oil cooler hoses (1, 2) from the vehicle. (Scheme 320)

Scheme 318

Scheme 318

Scheme 319

Scheme 319

Scheme 320

Scheme 320
  1. Install the transaxle oil cooler hoses into the vehicle. Push the transaxle oil cooler hoses (1, 2) into the radiator quick connect fittings, until a "click" is heard. (Scheme 320)
  2. Tug gently on the cooler hoses to ensure proper retention. Slide the white plastic covers over the transaxle oil cooler hose quick connections.
  3. Push the transaxle oil cooler hoses into the transaxle quick connect fittings, until a "click" is heard. (Scheme 319) Tug gently on the cooler hoses to ensure proper retention.
  4. Slide the white plastic covers over the transaxle oil cooler hose quick connections. Install the transaxle oil cooler hose retainer onto the transaxle. (Scheme 318)
  5. Lower the vehicle. Fill transaxle with appropriate fluid to proper level. See «LUBRICATION»(/buick/lesabre/viii-2000-2005/remont/automatic-trans/#automatic-transmission-servicing). Inspect for fluid leaks.

Remove the throttle body air inlet duct. Remove the line the pressure pipe plug (38). (Scheme 321)

Scheme 321

Scheme 321: Removal

Install the line pressure pipe plug (38). (Scheme 321) Tighten the line pressure pipe plug to specification. See TORQUE SPECIFICATIONS. Install air cleaner assembly.

Remove the case side cover. See CASE SIDE COVER. Remove the wiring harness as necessary. Remove the oil pump bolts (205, 206, 207). (Scheme 322) Remove the oil pump from the valve body. (Scheme 323) Inspect the oil pump.

Scheme 322

Scheme 322: Removal

Scheme 323

Scheme 323

Install the oil pump to the valve body. (Scheme 323) Install the oil pump bolts (205, 206, 207). (Scheme 322) Use a torque wrench to tighten the pump to valve body bolts. Do not exceed the torque specifications. Tighten oil pump bolts as follows

  1. M6 X 1.0 X 20 (205) - 70 INCH lbs. (8 N.m).
  2. M6 X 1.0 X 85 (207) - 106 INCH lbs. (12 N.m).
  3. M6 X 1.0 X 95 (206) - 106 INCH lbs. (12 N.m).

Install the case side cover. See CASE SIDE COVER .

  1. Remove the case extension housing. See «CASE EXTENSION HOUSING»(/buick/lesabre/viii-2000-2005/remont/automatic-trans/#automatic-transmission-servicing). Rotate the differential carrier until the end of the output shaft can be seen and the differential pinion shaft is in a horizontal position. (Scheme 324)
  2. Place the Axle Removal Wedge (J-42562) between the end of the output shaft and the differential pinion shaft. Using a hammer, hit the end of the axle removal wedge in order to compress the output shaft compression ring and push the output shaft through the differential side gear.
  3. Remove the differential carrier. Using snap ring pliers remove the compression ring from the output shaft. (Scheme 325) Be careful not to damage the bearing on the output shaft. (Scheme 327)
  4. Remove the output shaft through the left wheel opening. (Scheme 326) Inspect the output shaft and the bearing for the following: A cracked or deformed bearing cage. Damaged bushing journals. Stripped splines. A damaged retainer ring groove.

Scheme 324

Scheme 324

Scheme 325

Scheme 325

Scheme 326

Scheme 326

Scheme 327

Scheme 327
  1. Install the drive axle retaining ring and the output shaft differential inboard snap ring onto the output shaft. (Scheme 327) Install the fourth clutch bearing onto the output shaft.
  2. Hold the front differential carrier in place and carefully install the output shaft into the transaxle through the left wheel opening. (Scheme 326)
  3. Extend the output shaft through the differential side gear. Install the case extension housing. See «CASE EXTENSION HOUSING»(/buick/lesabre/viii-2000-2005/remont/automatic-trans/#automatic-transmission-servicing).

Remove the case side cover. See CASE SIDE COVER. Disconnect the transaxle wiring harness. Using a small screwdriver or pick, remove the pressure control solenoid valve retainer (314E) from the control valve body (301). (Scheme 328) Remove the pressure control solenoid (322). Remove the O-ring seals (307, 316) from the pressure control solenoid valve (322) ONLY if they are damaged.

Scheme 328

Scheme 328: Removal

Install new O-ring seals (307, 316) onto the pressure control solenoid valve (322), if they had been removed. (Scheme 328) Install the pressure control solenoid (322). Hold the PC solenoid valve (322) in the control valve body (301). Install the pressure control solenoid valve retainer (314E) into the control valve body (301). Connect the transaxle wiring harness. Install the case side cover. See CASE SIDE COVER.

  1. Remove the throttle body air inlet duct. Remove the right exhaust manifold. Depress the reverse servo cover. (Scheme 329)
  2. Remove the snap ring. (Scheme 330) Pull the O-ring seal out through the slot in the case. Use side cutting pliers in order to cut the servo cover O-ring seal.
  3. Depress the reverse servo cover, grasp one end of the cut seal and pull the seal out of the servo cover.
  4. Remove the reverse servo cover. Remove the servo assembly. Remove the servo spring.

Scheme 329

Scheme 329

Scheme 330

Scheme 330
  1. Jack up the driver side (channel plate side) of the car until it is higher than the differential side. This ensures that the reverse band is in the proper location and not cocked to the channel plate side of the case.
  2. Install the servo spring. (Scheme 330) Install the servo assembly. Install the reverse servo cover with new O-ring seal. (Scheme 329)
  3. Install the snap ring. Install the right exhaust manifold. Install air cleaner assembly.
  1. Set the park brake and chock the wheels. Fully lift the retainer from the shift cable mechanism. (Scheme 331)
  2. Disconnect the shift cable terminal from the transaxle manual shift lever pin. (Scheme 332) Press the locking tabs inward in order to release the shift cable from the bracket.
  3. Remove the left closeout/insulator panel. Remove the retaining clip from the shift cable. (Scheme 333) Remove the shift cable from the column control lever.
  4. Remove the shift cable from the steering column bracket. (Scheme 334) Remove the shift cable through the hole in the cowl.

Scheme 331

Scheme 331

Scheme 332

Scheme 332

Scheme 333

Scheme 333

Scheme 334

Scheme 334
  1. Properly route the shift cable through the engine compartment. (Scheme 335) Install the shift cable through the cowl. Install the shift cable to the steering column bracket. (Scheme 334)
  2. Install the retaining clip to the shift cable. (Scheme 333) Install the shift cable to the column control lever. Install the left instrument closeout panel.
  3. Install the shift cable into the bracket. (Scheme 332) Connect the shift cable terminal to the transaxle manual shift lever pin.
  4. Insert the retainer to the shift cable mechanism. (Scheme 331) Adjust the shift cable. See «SHIFT CABLE»(/buick/lesabre/viii-2000-2005/remont/automatic-trans/#automatic-transmission-servicing__shift-cable) under ADJUSTMENTS.

Scheme 335

Scheme 335
  1. Remove the case side cover. See «CASE SIDE COVER»(/buick/lesabre/viii-2000-2005/remont/automatic-trans/#automatic-transmission-servicing). Disconnect and reposition the electrical connectors from the following: The internal mode switch if equipped. 2-3 Shift solenoid valve assembly. Fluid pressure manual valve position switch assembly. (Scheme 310)
  2. Remove the oil pump bolts (206, 207). Remove the oil pump from the valve body. (Scheme 323)
  3. Disconnect the torque converter clutch pulse width modulation (TCC PWM) solenoid electrical connector. Remove the TCC PWM solenoid retaining clip (314F). (Scheme 336) Remove the TCC PWM solenoid (334). Remove the O-ring seals (305, 306) from the TCC PWM solenoid valve (334) ONLY if they are damaged.

Scheme 336

Scheme 336
  1. Install new O-ring seals (305, 306) onto the TCC PWM solenoid valve (334) if they were removed. (Scheme 336) Install the TCC PWM solenoid (334). Hold the TCC PWM solenoid in place while installing the retaining clip (314F). Connect the TCC PWM solenoid electrical connector.
  2. Install the oil pump to the valve body. (Scheme 323) Install the oil pump bolts (206, 207). (Scheme 322) Tighten the bolts (207) to 106 INCH lbs. (12 N.m)
  3. Tighten the bolts (206) to 12 ft. lbs. (16 N.m). Reposition and connect the electrical connectors to the following: Fluid pressure manual valve position switch assembly. (Scheme 310) 2-3 Shift solenoid valve assembly. The internal mode switch, if equipped.
  4. Install the case side cover. See «CASE SIDE COVER»(/buick/lesabre/viii-2000-2005/remont/automatic-trans/#automatic-transmission-servicing).
  1. Remove the case side cover. See «CASE SIDE COVER»(/buick/lesabre/viii-2000-2005/remont/automatic-trans/#automatic-transmission-servicing). Disconnect the transaxle wiring harness.
  2. Remove the control valve body bolts (375, 379, 381) that mount the fluid pressure manual valve position switch to the control valve body (300). (Scheme 337)
  3. Carefully remove the fluid pressure manual valve position switch (395). Inspect the fluid pressure manual valve position switch (395) for the following conditions: Damaged electrical connector terminals. Damaged seals. Damaged switch membranes. Debris on the switch membranes.

Scheme 337

Scheme 337

Note. When installing the TFP switch handle the switch carefully, the fluid pressure manual valve position switch is very delicate.

  1. Carefully install the fluid pressure manual valve position switch (395). (Scheme 337) Install the control valve body bolts (375, 379, 381) that mount the fluid pressure manual valve position switch to the control valve body (300).
  2. Tighten the control valve body bolt (375) to 106 INCH lbs. (12 N.m). Tighten the control valve body bolt (379) to 106 INCH lbs. (12 N.m).
  3. Tighten the control valve body bolt (381) to 70 INCH lbs. (8 N.m). Connect the transaxle wiring harness. Install the case side cover. See «CASE SIDE COVER»(/buick/lesabre/viii-2000-2005/remont/automatic-trans/#automatic-transmission-servicing).
  1. Remove the oil pan. See «DRAINING & REFILLING»(/buick/lesabre/viii-2000-2005/remont/automatic-trans/#automatic-transmission-servicing__draining-refilling).
  2. Remove the thermo element pins and washers (120 and 123). (Scheme 338)
  3. Remove the thermo element (121) and the thermo element plate (122).

Scheme 338

Scheme 338
  1. Use the Thermo Element Height Gage (J-34094-A) to set the middle thermo pin (123). (Scheme 339) Install the new thermo element plate (122). Install the pin and washer (120).
  2. Use the thermo element height gage to set the height of the pin and washer (120) furthest from the accumulator. Use the thermo element height gage to set the height of the 2nd pin and washer (120).
  3. Carefully install the thermo element (121) between the 2 pin and washers (120). The "V" in the thermo element (121) must contact the thermo element plate (122). Install the oil pan. See «DRAINING & REFILLING»(/buick/lesabre/viii-2000-2005/remont/automatic-trans/#automatic-transmission-servicing__draining-refilling) under LUBRICATION. Fill transaxle with appropriate fluid to proper level. See «LUBRICATION»(/buick/lesabre/viii-2000-2005/remont/automatic-trans/#automatic-transmission-servicing).

Scheme 339

Scheme 339

Remove the throttle body air inlet duct. Remove the transaxle vent (press fit) (37) by pulling upward with pliers, gripping the ring edge at transaxle surface. (Scheme 340)

Scheme 340

Scheme 340: Removal

Install the transaxle vent (press fit) (37) by tapping gently around ring edge with a drift until vent ring is flush with transaxle case. (Scheme 340) Install air cleaner assembly.

Raise and support the vehicle. Remove the right front tire and wheel assembly. Remove the vehicle speed sensor wiring harness connector. Remove the vehicle speed sensor bolt (9). (Scheme 341) Remove the vehicle speed sensor (10) from the extension case. Remove the O-ring (11) from the vehicle speed sensor (10). (Scheme 342)

Scheme 341

Scheme 341: Removal

Scheme 342

Scheme 342

Install the O-ring (11) to the vehicle speed sensor (10). (Scheme 342) Install the vehicle speed sensor (10) to the extension case. Install the vehicle speed sensor bolt (9). (Scheme 341) Tighten the vehicle speed sensor bolt (9) to specification. See TORQUE SPECIFICATIONS. Install the vehicle speed sensor wiring harness connector. Install the right front tire and wheel assembly. Lower the vehicle.

Remove the case side cover. See CASE SIDE COVER. Use a small flat-blade tool in order to remove the wiring harness from the solenoid valve(s), TFP manual valve position switch and/or the temperature sensor. (Scheme 310) Remove the wiring harness. Remove the clips retaining the solenoid(s).

Connect the wiring harness. (Scheme 310) Install the wiring harness to the solenoid valve(s), TFP manual valve position switch and/or the temperature sensor. Install the case side cover. See CASE SIDE COVER.

Remove the case side cover. See CASE SIDE COVER. Disconnect the transaxle wiring harness. Using a small screwdriver or pick, remove the 1-2 shift solenoid valve retainer (314D) from the control valve body (301). (Scheme 343) Remove the 1-2 shift solenoid (315A). Remove the O-ring seal (316) from the 1-2 shift solenoid valve (315A) ONLY if it is damaged.

Scheme 343

Scheme 343: Removal

Install a new O-ring seal (316) onto the 1-2 shift solenoid valve (315A), if it was removed. (Scheme 343) Install the 1-2 shift solenoid valve (315A). Connect the transaxle wiring harness. Hold the 1-2 shift solenoid valve (315A) in the control valve body (301). Install the 1-2 shift solenoid valve retainer (314D) into the control valve body (301). Install the case side cover. See CASE SIDE COVER.

Remove the case side cover. See CASE SIDE COVER. Disconnect the transaxle wiring harness. Using a small screwdriver or pick, remove the 2-3 shift solenoid valve retainer (314C) from the control valve body (301). (Scheme 344) Remove the 2-3 shift solenoid valve (315B) from the control valve body (301). Remove the O-ring seal (316) from the 2-3 shift solenoid valve (315B) ONLY if it is damaged.

Scheme 344

Scheme 344: Removal

Install a new O-ring seal (316) onto the 2-3 shift solenoid valve (315B), if it was removed. (Scheme 344) Install the 2-3 shift solenoid valve (315B) into the control valve body (301). Install the 2-3 shift solenoid valve retainer (314C) into the control valve body (301). Connect the transaxle wiring harness. Install the case side cover. See CASE SIDE COVER.

TORQUE SPECIFICATIONS

ApplicationFt. Lbs. (N.m)
Brace-To-Engine Bolt46 (62)
Brace-To-Transaxle Bolt32 (43)
Case Extension Housing Bolt27 (37)
Catalytic Converter Nut18 (24)
Engine Mount Strut35 (48)
Frame-To-Body Bolt83 (113)
Front Transaxle Mount Nut52 (71)
Ground Cable Bolt13 (18)
Left Mount Nut52 (70)
Left Transaxle Bracket Bolt81 (110)
Manual Selector Lever Nut15 (20)
Manual 2-1 Band Servo Cover Bolt17 (23)
Oil Cooler Hose Clip Bolt18 (24)
Oil Cooler Pipe Fitting45 (61)
PNP Switch Mounting Bolt18 (24)
Rear Transaxle Mount Lower Bolt & Lower Nut37 (50)
Shift Cable Bracket Nut18 (24)
INCH Lbs. (N.m)
Air Cleaner Retainer Screw44-61 (5-7)
Accumulator Bolt97 (11)
Brake Pressure Modulator Valve Nut89 (10)
Fluid Filler Tube Bracket Bolt115 (13)
Forward Servo Cover Attaching Bolt97 (11)
Frame Rail Bolt Retaining Screw35 (4)
Line Pressure Pipe Plug97 (11)
Oil Cooler Pipe Clip Bolt27 (3)
Oil Pan Bolt124 (14)
Vehicle Speed Sensor Bolt97 (11)

TORQUE SPECIFICATIONS