Four problems related to engine burning oil have been reported for the 2003 Cadillac CTS. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Cadillac CTS based on all problems reported for the 2003 CTS.
Purchased car from dealership in oct 2015. While driving, I begin to smell burning oil and noticed oil leak under vehicle on left side. Took it to a mechanic to see where leak is coming from and he stated that valve cover gasket is leaking oil out as well as oil is present in the spark plug reservoirs. Will have to get gaskets replaced before further damage is caused. This seems to be a common problem with this model vehicle and I recently saw on news where gm recalled other models and years of vehicle with same issue. Why wasn't this model Cadillac included in the recall when is should have?.
Leaking valve cover gaskets resulting in oil on coils, oxygen sensor and risk for oil related fires. The smell of burning oil is prevalent because of oil on hot engine parts. A review of various internet forums shows this is a common problem on this make/model. A consensus opinion appears to be the valve cover gaskets were made from inferior materials. Since this is a fire safety issue and/or a result of the manufacturer's negligence, this car should be recalled.
My Cts have been in the shop numerous time for smoke and the smell of oil burning coming from the engine compartment. After years of taking my vehicle to the dealership and having parts replace the problem still occur.
The dealer unkinked a fuel tank hose. This problem made it difficult to pump gas into the tank. This vehicle is not getting the proper gas mileage and burns too much oil, engine cooler leaking fluid, when the vehicle sits overnight it has to be cranked two or three times before the engine starts .