Two problems related to engine shut off without warning have been reported for the 2000 Buick Lesabre. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2000 Buick Lesabre based on all problems reported for the 2000 Lesabre.
Engine shuts off while driving, so far, only at lower speeds. Sometimes, by putting in neutral and turning key, engine starts again. Other times, it has to set for a while. Put new battery in 11/7/2013. Problem persisted. Three auto repair shops, including a Buick dealership, have checked it out, but it does not die on them in the amount of time its in their possession so I was told there was nothing they could do. Typically, it happens after it is driven at least 20 miles. Came very close to being rear-ended as I was unable to pull off the road enough to be out of the way on a road with hills and blind spots.
Transmission no longer shifts into 3rd or overdrive. With shifter in overdrive and in stopped position once you take your foot off the brake to begin acceleration the torque converter slams to a stop and the engine shuts off. Transmission fluid full at all times, engine warmed up. Repeated stalling, repeated tachometer quits. Repeated engine quits when you place in overdrive from neutral. Must start movement by placing in lower gears 1 2 or 3. This transmission never shifts out of second gear. Put it on code analyzer and got 2 codes that indicated pc solenoid torque converter solenoid issues. Seems like these 2000 Buicks have recurring defects and gm won't standby their product. Why on earth would a company that designs cars ever put a battery under a car seat. One spark with hydrogen gas under that seat could kill an infant in a car seat if it exploded. . Come on!!!.