One problem related to automatic transmission torque converter has 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.
While driving on i95 in georgia on the way to florida 12-28-08 my 2003 Buick Lesabre transmission started bucking and jolting car as it shifted. Took to garage and it was determined that the torque converter locked up, this car had the transmission oil replaced at recommended 50,000 miles, besides the 2200 dollars to replace transmission we had to get hotel room, meals and a rental car to continue trip as the replacement transmission could not be delivered right away.