Would an alternator problem prevent shifting?

An alternator problem typically wouldn't directly prevent shifting in a vehicle. However, if the alternator is failing and causing the battery to drain, it could lead to electrical issues that affect the operation of electronic components, including the transmission control module. In some cases, a low battery might affect power-assisted systems, which could indirectly make shifting feel more difficult. Overall, while not a direct cause, an alternator issue can contribute to conditions that complicate shifting.