Two problems related to gasoline engine have been reported for the 2001 Buick Lesabre. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2001 Buick Lesabre based on all problems reported for the 2001 Lesabre.
Throttle valve plate sticking. The gas pedal has to be stepped on hard when you first start up after setting a while. I'm told this is a common problem with the unit uses on many of their vehicles mine is on a 2001 Buick Lesabre with a 3800 engine. Waldecker pontiac, brighton, mi told me this item wasn't covered on the extended warranty I purchased (6yr/100000 mile) I had 94,000 miles on the vehicle but the problem has been around for at least 10000 miles. I now have 101600 I'd like to know why it wasn't a warranted item. This also could be construed a safety item as when you step hard on the pedal the car surges forward slightly. I'm aware of it so I automatically hit the pedal and release.
Consumer states that the vehicle will automatically shut off with out any notice. Contacted dealer. Nlm.