Two problems related to alternator/generator/regulator have been reported for the 2003 Chevrolet Monte Carlo. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Chevrolet Monte Carlo based on all problems reported for the 2003 Monte Carlo.
My car is a 2003 Monte Carlo, if I try to use the directional signals they make a buzzing sound and then the brake light and the air bag light comes on along with the battery light, no signal works, the hazard lights work , I replaced the hazard switch but that didnt solve it . Batter is fine and the alternator I had them checked there is no relay for the directionals its all in one . Something is strange going on I also noticed sometimes when your driving the those three lights will start coming on as well . I had put up the windows and they all went on too , sometimes just when driving it or even stopped had this car since it was brand new never had a problem till a few weeks ago.
Chevrolet Monte Carlo z-34 1997, electrical problems and idling high. The alternator was replaced, however the noise is still there.