GM Service Manual Online
For 1990-2009 cars only

Reverse Servo Replacement 2.2L and 2.4L Engines

Removal Procedure

  1. Disconnect the negative battery cable. Refer to

    Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

    in General Information.
  2. Raise the vehicle and suitably support the vehicle. Refer to General Vehicle Lifting and Jacking in General Information.

  3. Object Number: 97337  Size: SH
  4. Depress the servo cover.
  5. Remove the snap ring and the servo cover.

  6. Object Number: 97341  Size: SH
  7. Remove the following parts:
  8. • The piston assembly
    • The sealing ring
    • The servo spring
  9. For the disassembly of the servo piston assembly, refer to Reverse Servo Disassemble .

Installation Procedure


    Object Number: 97341  Size: SH
  1. Install the following parts:
  2. • The servo spring
    • The sealing ring
    • The piston assembly

    Object Number: 97337  Size: SH
  3. Install the servo cover and the snap ring.
  4. Lower the vehicle.
  5. Connect the negative battery cable.

Reverse Servo Replacement L82

Removal Procedure

   • 
  • Disconnect the negative battery cable. Refer to

    Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

    in General Information.
  •    • 
  • Remove the EGR pipe from the exhaust manifold.
  •    • 
  • Remove the exhaust crossover pipe. Refer to 3100 (VIN M) Exhaust Crossover Pipe in Exhaust.
  •    • 
    Object Number: 97337  Size: SH
  • Depress the servo cover.
  •    • 
  • Remove the snap ring and the servo cover.
  •    • 
    Object Number: 97341  Size: SH
  • Remove the following parts:
  • • The piston assembly
    • The sealing ring
    • The servo spring
       • 
  • For the disassembly of the servo piston assembly, refer to Reverse Servo Disassemble .
  • Installation Procedure


      Object Number: 97341  Size: SH
    1. Install the following parts:
    2. • The servo spring
      • The sealing ring
      • The piston assembly

      Object Number: 97337  Size: SH
    3. Install the servo cover and the snap ring.
    4. Install the exhaust crossover pipe. Refer to 3100 (VIN M) Exhaust Crossover Pipe in Exhaust.
    5. Install the EGR pipe to the exhaust manifold.
    6. Connect the negative battery cable.