The alternator may fail, causing a "no charge" condition. An internal bearing may also fail and cause an abnormal noise. If the vehicle is driven too long with a failed bearing, the alternator may stop turning, which can cause the serpentine belt to break or the engine to stall and not turn over.
Failed alternator can cause "no charge" condition on GMC Sonoma
Average mileage: 182,945 (182,945–182,945)
Engine affected: 4.3L V6
6 people reported this problem