GM Service Manual Online
For 1990-2009 cars only

Transmission Brace Replacement 3800 L36

Removal Procedure

Caution: Before servicing any electrical component, the ignition and start switch must be in the OFF or LOCK position and all electrical loads must be OFF, unless instructed otherwise in these procedures. If a tool or equipment could easily come in contact with a live exposed electrical terminal, also disconnect the negative battery cable. Failure to follow these precautions may cause personal injury and/or damage to the vehicle or its components.

  1. Disconnect the negative battery ground cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  2. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  3. Remove the right front tire and wheel. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.

  4. Object Number: 160962  Size: SH
  5. Remove the transaxle brace bolts.
  6. Remove the transaxle brace.

Installation Procedure


    Object Number: 160962  Size: SH
  1. Install the transaxle brace.
  2. Hand start the bolts to the engine and to the transaxle.
  3. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  4. Install the transaxle brace bolts to the transaxle.
  5. Tighten
    Tighten the transaxle brace bolts to the transaxle to 43 N·m (32 lb ft).

  6. Install the transaxle brace bolts to the engine.
  7. Tighten
    Tighten the transaxle brace bolts to the engine to 63 N·m (46 lb ft).

  8. Install the right front tire and wheel. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  9. Lower the vehicle.
  10. Connect the battery ground (negative) cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.

Transmission Brace Replacement 3.5L Twin Cam V6 LX5

Removal Procedure

Caution: Before servicing any electrical component, the ignition and start switch must be in the OFF or LOCK position and all electrical loads must be OFF, unless instructed otherwise in these procedures. If a tool or equipment could easily come in contact with a live exposed electrical terminal, also disconnect the negative battery cable. Failure to follow these precautions may cause personal injury and/or damage to the vehicle or its components.

  1. Disconnect the negative battery ground cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  2. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  3. Remove the right front tire and wheel. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  4. Remove the right (rear) engine mount bracket. Refer to Engine Mount Bracket Replacement in Engine Mechanical - 3.5L.

  5. Object Number: 289514  Size: SH
  6. Remove the four transaxle brace bolts.
  7. Remove the transaxle brace.

Installation Procedure


    Object Number: 289514  Size: SH
  1. Install the transaxle brace.
  2. Hand start the bolts to the engine block and oil pan.
  3. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  4. Install the transaxle brace bolts.
  5. Tighten
    Tighten the transaxle brace bolts to 43 N·m (32 lb ft).

  6. Install the right (rear) engine mount bracket. Refer to Engine Mount Bracket Replacement in Engine Mechanical - 3.5L.
  7. Install the right front tire and wheel. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  8. Lower the vehicle.
  9. Connect the battery ground (negative) cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.