GM Service Manual Online
For 1990-2009 cars only

    Important: To ensure that all sediment within the transaxle is suspended in the fluid, the fluid should only be drained after it has reached a normal operating temperature of 88-93°C (190-200°F). Normal operating temperature is reached after approximately 25 km (15 miles) of highway driving.

  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.

  2. Object Number: 1874305  Size: SH

    Caution: The transaxle fluid is hot. Caution must be taken to prevent personal injury when the transaxle fluid drains from the transaxle.

  3. Remove the transaxle drain plug (3) and allow the transaxle to drain completely.
  4. Remove the fluid level check plug (2).
  5. Notice: Refer to Fastener Notice in the Preface section.

  6. Clean and install the transaxle drain plug (3).
  7. Tighten
    Tighten the transaxle drain plug to 38 N·m (28 lb ft).

  8. Lower the vehicle.
  9. Remove the fluid fill cap (1).
  10. Add manual transmission and transfer case fluid G/M P/N 88861800 (Canadian P/N 88861801) until it seeps out of the fluid level check plug hole.
  11. Install the fluid fill cap (1).
  12. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
  13. Clean and install the fluid level check plug (2).
  14. Tighten
    Tighten the fluid level check plug to 38 N·m (28 lb ft).

  15. Lower the vehicle and verify proper operation.