Possible Points of Fluid Leaks
WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.
Transmission Oil Pan
- Incorrectly tightened oil pan bolts
- Improperly installed or damaged oil pan gasket
- Damaged oil pan or mounting face
- Incorrect oil pan gasket
Case Leak
- Damaged or missing fill tube seal
- Mislocated fill tube bracket
- Damaged vehicle speed sensor seal
- Damaged manual shaft seal
- Loose or damaged oil cooler connector fittings
- Worn or damaged propeller shaft oil seal
- Loose line pressure pipe plug
- Warped
- Distorted torque converter housing
- Porous casting
Leak at the Torque Converter End
- Converter leak in the weld area
- Converter seal lip cut. Check the converter hub for damage
- Converter seal bushing moved forward and damaged
- Converter seal garter spring missing from the seal
- Porous casting of the transmission case or the oil pump
Leak at the Vent Pipe or the Fluid Fill Tube
- Overfilled system
- Water or coolant in the fluid-the fluid will appear milky.
- Transmission case porous
- Incorrect fluid level indicator
- Plugged vent
- Drain-back holes plugged
- Mispositioned oil pump to case gasket, if equipped
| Callout | Component Name |
|---|---|
| 1 | Manual Shift Shaft Seal Assembly |
| 2 | Oil Pressure Test Hole Plug |
| 3 | Vent Assembly |
| 4 | Reverse Band Servo Cover Seal |
| 5 | Oil Fill Tube Seal |
| 6 | Vehicle Speed Sensor Seal |
| 7 | Drive Shaft Oil Seal Assembly (Right) |
| 8 | Forward Band Servo Cover Seal |
| 9 | Park Pawl Actuator Guide Seal |
| 10 | Torque Converter Oil Seal Assembly |
| 11 | Torque Converter Assembly (Welds/Cracks) |
| 12 | Oil Cooler Pipe Fittings |
| 13 | Case Assembly (Porosity/Cracks) |
| 14 | Case Side Cover Gasket |
| 15 | Electrical Connector Seal |
| 16 | Drive Shaft Oil Seal Assembly (Left) |
| 17 | Case Side Cover Inner Gasket |
| 18 | Oil Pan Gasket |