Antifreeze leaking into engine through intake manifold plenum causing expensive replacement engines and or parts. Dangerous if engine locks up while driving.

- Bellows Falls, VT, USA

- the contact owns a 1999 Buick Lesabre. While driving 65 miles per hour, the contact's check engine and oil warning lights turned on, at which point, the engine stalled. The contact was unable to restart the vehicle and had the vehicle towed. The contact's current mileage is 37,000 miles. Per the contact the NHTSA website sited the incident is a common problem. Per the mechanic, the failure was due to the intake manifold flooding the engine. The contact stated that several components were damaged including the starter, spark plugs, and a gasket. The contact called General Motors and was told that the intake manifold had previously been repaired in 2004.

- Philadelphia , PA, USA

1998 Lesabre stalled while driving on the highway. The first time the vehicle stalled, the problem was diagnosed as a cracked cylinder head and damaged plenum. On another occasion, when the vehicle stalled, the mechanic forgot to reconnect the alternator. The dealer stated another reason why the vehicle stalled on one of several occasions, was because a crankshaft sensor had failed, but was not related to the previous problems, however later that day the vehicle stalled again. The serpentine belt failed, which caused the consumer to lose power steering.

- Massapequa Park, NY, USA

Nar 06/12/2003. Check engine light appear with only 41,000 miles on 1999 Buick Lesabre.

- Quincy , IL, USA

The engine light illuminated continuously. The vehicle was taken to the dealership who indicated that two of the engine cylinders were dead. This occurred due to a factory defect.

- Madison, WI, USA

While driving 25 mph the engine light illuminated then the vehicle stalled. The dealership was notified but did not resolve the problem. The vehicle stalled because of a cracked plenum which allowed water to enter the engine. The dealer replaced the plenum, spark plugs, cleaned lower intake and cleaned the coolant from the cylinders.

- Thomasville, GA, USA

After some local driving and being parked, car produced cloud of exhaust smoke and then would not start. Problem traced to coolant leakage into cylinders from failure of upper intake manifold gaskets. Repair cost: $681.30

- W. Melbourne, FL, USA

Intermittently when the brake pedal was depressed to slow the vehicle down engine stalled. The dealership performed a diagnostic test, but no failure code was found. The consumer had the vehicle checked by two different dealers who both showed no failure code.

- Burnsville, NC, USA

Problems with check engine light staying on continuously clicking on and off. Possible low trace wiring. $72.50 for cost of repairs. The consumer stated the vehicle stalled 8 times.

- Berkley, MA, USA

Upper and lower manifolds leaked coolant into the crank case on the 3800 series engine...($1254.24 repair cost) due to a faulty design on the manifolds, the company redesigned the manifold to take care of the problem...why hasn't the company had a recall on this problem...?

- Commerce, OK, USA

1999 Buick Lesabre has coolant leak at the manifold intake gasket. Engine light came on and smoke out of the back. Repair cost = $580

- Fortville, IN, USA

The vehicle stalled without warning.

- New Orleans, LA, USA

While driving 20- 35 mph on four occaisions engine completely shut down without warning. Dealer replaced crankshaft positioning sensor and faulty ignition module which did correct the problem. Also, consumer stated there wa sno no correction for the problem.

- Tucker, GA, USA