One problem related to ignition has been reported for the 2005 Buick Lacrosse. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2005 Buick Lacrosse based on all problems reported for the 2005 Lacrosse.
(jft dealer) tl the contact owns a 2005 Buick Lacrosse. While operating the vehicle, the ignition switch experienced unintended rotation, which caused the vehicle to suddenly shut off. The vehicle was taken to the dealer where it was diagnosed that the ignition lock cylinder was faulty and needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 150,000.