2021-2023 GMC Sierra 2500 HD 6.6L V8 FLEX. 2020-2023 GMC Sierra 2500 HD 6.6L V8 GAS. Position: Alternator. Notes: Multi-V -- With Dual Alternator. Ensure Proper FitTo confirm that this part fits your vehicle, enter your vehicle's Year, Make, Model, Trim and Engine in the Compatibility Table.
