1999 Oldsmobile Silhouette: engine failure

Filed Jul 10, 2005 · Engine · NY

Leak in the defective intake manifold gasket , which has been diretly related to engine failure,which I now have with my 1999 olds silouette - cost to replace engine - $4,500 - having collant leak into the oil can not be good for any engine! Gm will not own problem

Filed Dec 31, 2004 · Engine · 83,000 miles · TN

The "low coolant" light came on but there was no evidence of a leak. We finally discovered that the hot coolant was leaking onto the camshaft and into the engine through faulty lower intake manifold gaskets. The gasket was replaced at our expense but we do not know the damage or condition of the camshaft and engine bearings from coolant mixed with oil to lubricate. There remains a coolant odor we cannot identify. We later learned of gm service bulletin 03-06-01-010 dated march 2003 that identifies this problem but vehicle owners have not been alerted. There will be complete engine failure without early detection of problem and repair.

Filed Jan 23, 2004 · Engine · 100,000 miles · PA

Water pump failed, then radiator failed, now engine failed. All seem to be related to dex-cool.

Filed Jan 15, 2004 · Engine · 50,750 miles · NJ

Leaking intake manifold gasket cause oil to be contaminated with coolant. Engine failed.

Filed Jan 15, 2004 · Engine · 58,000 miles · OH

Intake manifold gasket failed allowing dexcool coolant into the engine and mix with the oil. Total engine failure. Manifold gasket replaced at 58,000 miles. Engine rebuilt at 62,000 miles. Apparently this is happening on thousands of gm vehicles and gm will not cover the cost. In no way should a 1999 van need a new engine.

Filed Jan 15, 2004 · Engine · 64,000 miles · IN

I own a 1999 oldsmobile silhouette with 64,000 miles. I took the van to a local dealer because of a knocking noise on cold startup. The dealer diagnosed the problem as a failed intake manifold gasket. The failed gasket ruined the hydraulic lifters and had to be replaced. The total bill was $1500. The van had regular maintenance (oil, filters, anitfreeze checked) every 3000 miles. This seems to be a common problem with gm vehicles and dexcool systems. This could have been a major safety issue had the engine failed while driving.

Filed Feb 26, 2003 · Engine · 62,000 miles · IN

I own a 1999 oldsmobile silhouette with 62,000 miles. I took the van to a local dealer because of a knocking noise on cold startup. The dealer diagnosed the problem as a failed intake manifold gasket. The failed gasket ruined the hydraulic lifters and had to be replaced. The total bill was $1500. The van had regular maintenance (oil, filters, anitfreeze checked) every 3000 miles. This seems to be a common problem with gm vehicles and dexcool systems. This could have been a major safety issue had the engine failed while driving.

Filed Feb 18, 2003 · Engine · 50,750 miles · NJ

Leaking intake manifold gasket cause engine failure

Filed Jul 9, 2002 · Engine · CA

While driving engine failed. Vehicle was checked by dealer, who determined that coolant leaked into oil which caused the failure.

Filed Jun 8, 2001 · Engine, Locks · IL

The engine failed and had to be replaced within the first year of ownership. Nlm