One problem related to dash wiring 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.
Instrument panel lights dim and brightened, dash replaced and continued to have the same problem. Driver's door locked all by itself while car was parked with no one inside, only the driver's door locks.