Cadillac Seville oil leak issue due to rear main seal replacement requiring engine and transmission removal on Cadillac Seville

Some Cadillac Seville owners report experiencing oil leak issues that necessitate the replacement of the rear main seal, which can be both labor-intensive and costly. These problems often stem from the rear main seal's location at the back of the oil pan, where the transmission connects to the engine. The repair process can be quite challenging, as it may require the removal of both the engine and transmission. Owners emphasize the importance of correctly installing the double lip seal and checking distances during the repair to prevent future leaks. Additionally, it is advisable for owners to shop around for quotes from various repair shops to compare prices. Proper installation of the rear main seal is essential for preventing oil leaks and ensuring the vehicle operates efficiently.