The engine may develop an oil leak from the lower crankcase portion of the engine block. Our technicians tell us that the engine must be removed from the vehicle to properly repair this oil leak.Google+
Car Problem Reports
Cadillac DeVille DTS Oil Leaks From Lower Engine Area
Cadillac DeVille DTS Problem
Average Mileage: 87,979 mi (38,500 mi - 174,000 mi)
Visitor, 2003 Cadillac DeVille DTS, 76,000 mi
Engine oil leak, engine seal gasket separate steel alloy casing from alumimun oil slump causing leak due to temp /expansion different . Known problem from GM engineers.
Visitor, 2001 Cadillac DeVille DTS, 70,800 mi
leak started one year ago/mid-engine/2500.00 repair/GM should absorb this cost due to known design flaw.
Just occurred Solution in work once verified. A recent blog reads "Check PCV valve for clogs" before Rear Seal replacement... In Work.
Visitor, 2003 Cadillac DeVille DTS, 129,000 mi
My car leaks oil and cannot see where its coming from From this report I guess its the lower crankcase which is a very expensive repair to this car.We have a fleet of Cadillac cars and this is the first of my personal car.
Visitor, 2003 Cadillac DeVille DTS
My DHS has an oil leak that is getting progressively worst, I am currently using about 2 quarts of oil per month, the leak is seen on garage floor after parking it and during back-up into garage
Visitor, 2004 Cadillac DeVille DTS, 133,000 mi
not fixed at this time
Visitor, 2003 Cadillac DeVille DTS, 100,261 mi
I started using rear main oil sealant. It slow down the process hopefully it will stop it all together.I also went to a thicker oil.
Visitor, 2003 Cadillac DeVille DTS, 85,000 mi
Oil leak need to replace seal. Not worth expense.
Oil leaks on garage floor. Dealer said rear engine oil seal needed to be replace - cost $1,500.
Visitor, 2003 Cadillac DeVille DTS, 61,000 mi
Vehicle was repaired under Cadillac dealers warranty. Diagnosis in printout used the term "case halves," which were somehow sealed. The term "major engine" also appeared, which I interpret to mean the repair work was major in extent.