Manifold/header/muffler/tail Pipe problems of the 2003 Buick Lesabre

Intake manifold gaskets (both lower and upper) have failed resulting in coolant loss. Poorly designed plastic gaskets are no longer used but this should be a recall as it results in safety issue if coolant is completely depleted on the highway resulting in failure of vehicle to drive due to engine failure.

When the Lesabre was reliable; it was reliable. However, when issues started to occur, they were massive. At approx 90k miles the transmission went with no warming and was instantly. After that the car still had issues with the drive, transmission and gears. The fuel pump and intake manifolds have been replaced. As of 2014 I continue to have issues with this vehicle. It currently runs very hard and when idle and in traffic (very scary) will randomly cut off with zero warning or even begin to smoke. There is the correct amount of oil and antifreeze. The car will randomly smoke as well. I have been to the mechanic several times trying to figure out the main issue so that it can be repaired. This is extremely frustrating. Anyone have any solutions? I keep reading plenty of owners with the same issue(s) so I find it hard to believe that gm/Buick has not done a recall on parts for the engine, transmission, etc.

2003 Buick Lesabre. Consumer writes in regards to engine problems. The consumer stated the lower intake manifold had to be replaced in 2009 with 50,000 miles on the vehicle. Four and a half years later, the lower intake manifold gasket was leaking again and had to be replaced. . Also, the level ride compressor had to be replaced.

2003 Buick Lesabre. Consumer states problem with intake manifold gasket failure the consumer stated the intake gasket developed a leak, which allowed coolant to get into the oil. The consumer had to replace the upper intake manifold gasket at 46,333 miles and the lower intake manifold gasket at 71,193 miles. The cause of the problem was alleged to be an incompatibility between the gm dex-cool coolant which was introduced in 1995 and the intake manifold gasket material which could cause the engine to overheat and/or seize while driving on the highway.

: the contact stated antifreeze was leaking under the vehicle. The vehicle was taken to the dealership and the manifold gasket was replaced.

Vehicle's intake manifold failed. Consumer received a recall notice for problems with intake manifold failure on 2003 Buick Lesabre. Consumer stated this failure occurred with his 1998 Buick Lesabre also.