The alternator may fail causing the battery to go dead, or an abnormal noise may develop. The dash warning light may or may not illuminate. A failed alternator will require replacement.
Car Problem Reports
Chevrolet Suburban 1500 Alternator May Fail and Cause Noise and Dead Battery
Chevrolet Suburban 1500 Problem
Engines Affected: 5.7L V8, Gasoline
Visitor, 1999 Chevrolet Suburban 1500, 5.7L V8, 199,000 mi
Replaced alternator due to over charging issue. Truck was running fine and in the next moment it sounded like the motor was knocking. Luckily I keep an eye on my gages so no major damage was done. However it was really inconvenient because I had to replace the alternator late at night. I can only figure the voltage regulator went out and caused the issue. After I replaced the alternator there haven't been any other issues like this.