Possible Points of Fluid Leaks
WARNING: This page is about a different car, the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Cadillac Escalade EXT, 2007 Cadillac Escalade ESV, and 2007 Cadillac Escalade. 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 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
- Porous casting warped torque converter housing
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
- 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 | Automatic Transmission Electrical Connector Passage Sleeve |
| 2 | Line Pressure Test Hole Plug |
| 3 | Converter Housing to Case Joint |
| 4 | Trans Fluid Cooler Pipe Fitting Seals |
| 5 | Manual Shift Shaft Seal |
| 6 | Automatic Transmission Vent Pipe |
| 7 | Transmission Case Assembly |
| 8 | A/Trans Case Extension Seal - 2WD Models |
| 9 | Prop Shaft Front Slip Yoke Oil Seal - 2WD Models |
| 10 | A/Trans Fluid Pan Gasket |
| 11 | Torque Converter Fluid Seal Assembly |
| 12 | Torque Converter Assembly |
| 13 | Case Extension to Case Joint |
| 14 | Output Shaft Seal Assembly - 4WD Models |