Why my car isn't starting

Hi, this is Bo, an auto expert on RepairPal's Car Genius team! If your 2002 Buick Regal just clicks after installing a new battery and starter, the issue could be with the connections or the solenoid. First, double-check that the battery terminals are clean and the cables are tight. A bad ground connection or corroded terminals can prevent enough power from getting to the starter. Also, take a look at the starter solenoid; it might be clicking but not engaging fully. Lastly, the alternator could be weak, preventing a full charge. If you need any further advice or want help finding a trusted RepairPal shop in your area, please feel free to call us at 877-913-1554.