Four problems related to engine stall have been reported for the 1999 Buick Lesabre. The most recently reported issues are listed below.
While driving down mountain & had downshifted into 2nd gear, vehicle lost all power. Engine had stalled out. Had no control of vehicle. Power brakes & power steering was not working. Had to use emergency brakes to stop. Took vehicle to dealer & mechanic ran a diagnostic test. Could not locate cause of problem.
Ongoing problem with engine stalling intermittently. Vehicle has been inspected/repairs made by dealer on eight occasions, and problem is reoccurring.
Ongoing / intermittent problem with engine stalling while driving. Vehicle has been in / out of dealer shop on three occasions, and stalling still occurs. Seeking help or additional information from NHTSA in this matter.
Intermittently when the brake pedal was depressed to slow the vehicle down engine stalled. The dealership performed a diagnostic test, but no failure code was found. The consumer had the vehicle checked by two different dealers who both showed no failure code.