Five problems related to power train have been reported for the 2003 Buick Lesabre. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Buick Lesabre based on all problems reported for the 2003 Lesabre.
The transmission doesn't shift correctly even after it's warmed up it is erratic and rough while connecting the transmission gears and jerks very hard at most times. The power steering is not working correctly and makes it difficult to drive at all with the combined issues I'm very concerned about my and my family safely.
We bought the car December 29,2015, the car had 102,0215, and drove it to the doctor on our way back, the would make a "clunking" sound from trans-axles, and we notice that the dash board came up and it has hardware screws across the dash as if to hold it down.
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.
Transmission bumps some times.