Transmission Oil Change Procedure

1. Raise and suitably support vehicle.
2. Place a drain pan or suitable container underneath transmission.








3. Remove transmission oil level/filler plug from transmission.
4. Remove transmission drain plug from transmission and drain transmission oil.
5. Apply GM P/N 12346004, or equivalent, to the threaded portion of the transmission drain plug.
6. Install transmission drain plug into transmission.
- Tighten transmission drain plug to 28 Nm (20 ft. lbs.).
7. Add approximately 1.5 liters (1.6 qts.) of synthetic 75W-90 GL4 lubricant, or equivalent, into the transmission oil level/filler plug hole. Oil level should be even with the bottom of the transmission oil level/filler plug hole.
8. Apply GM P/N 12346004, or equivalent, to the threaded portion of the transmission oil level/filler plug.
9. Install transmission oil level/filler plug into transmission.
- Tighten transmission oil level/filler plug to 28 Nm (20 ft. lbs.).
10. Remove drain pan from underneath transmission.
11. Lower vehicle.