The power door locks may stop working in one or more doors due to a failed actuator. Replacement of the failed actuator should correct this concern.
1993 GMC Sonoma Problem Reports
RepairPal Verified 1993 GMC Sonoma Problem Reports
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.