One problem related to alternator/generator/regulator has been reported for the 2000 GMC Sierra. The most recently reported issues are listed below.
Headlights flicker on and off rapidly. Dealer thinks alternator is at fault.
| Horn Assembly problems | |
| Dash Wiring problems | |
| Electrical System problems | |
| Starter problems | |
| Alternator/generator/regulator problems | |
| Underhood Wiring problems |