GM Original Equipment™ Starter (12670255) by ACDelco®. Rated Power: 3.5 kW. Rotation: Clockwise. With 9-Tooth Pinion Gear. Voltage: 12V. When you need to match Original Equipment specifications in a replacement starter for your GM vehicle, look to ACDelco. Either way, you are getting a part that is made to perform like the factory part that came on your vehicle. There is no better way to keep that GM peace of mind.