GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

    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.

  1. Disconnect the negative battery cable.
  2. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  3. Remove the oil and the oil filter. Refer to Automatic Transmission Fluid and Filter Replacement .
  4. Disassemble the following parts:
  5. • The washers
    • The pins
    • The thermo element
    • The plate

Installation Procedure

Tools Required

J 34094-A Thermo Element Height Gauge

  1. Set the middle thermo pin height with the J 34094-A .
  2. Install the element plate.
  3. Install the pin and the washer assemblies. Use the J 34094-A in order to set the height of both washers. Complete the following steps:
  4. 3.1. Set the pin that is furthest from the accumulators.
    3.2. Set the other pin. This will ensure that both pins are set correctly.
  5. Install the thermo element between the two pins without bending the element too much.
  6. The V in the Thermo element must contact the element plate.

  7. Install the oil filter, the oil pan and the gasket. Refer to Automatic Transmission Fluid and Filter Replacement .
  8. Connect the negative battery cable.
  9. Adjust the oil level.