Possible Points of Fluid Leaks
WARNING: This page is about a different car, the 2011 GMC Yukon, 2011 Chevrolet Tahoe, and 2011 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
- Incorrectly tightened or damaged drain plug
Case Leak
- Damaged output 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
- HV 3 Phase cable lug box
- Porous casting warped dampener housing
Leak at the Dampener End
- Dampener leak in the weld area
- Dampener seal lip cut. Check the Dampener hub for damage
- Dampener seal bushing moved forward and damaged
- Dampener 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
Leak at the Case Extension
- Output shaft seal assembly - located in the case
- Output shaft seal assembly - located in the case extension