Noise and/or Dead Battery Due to failed Alternator on GMC Yukon Denali

Problem Description and Possible Solution

The alternator may fail causing the battery to go dead. The charge light on the dash may or may not illuminate. The alternator may also develop an abnormal noise. A failed alternator will require replacement.

Problem Data
RepairPal Verified
Average mileage: 98,000 (98,000–98,000)
2 model years affected: 1999, 2000
3 people reported this problem
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system wasnt charging replaced alternator and is still not working