What causes the security and battery lights with four chimes to come on when the engine is hot in a 2002 Chevy Impala?
Not sure, but happened with my 02, and some days my battery
would be dead after sitting about 12 hrs., other days normal - chev
dealer 90% sure something wrong with the BCM part that is basically
the brains of the car, was told some similar problems reported with
02. Debating on whether to replace the BCM for about $450.