How do you replace a front signal light on 2009 Cadillac dts?

To replace the front signal light on a 2009 Cadillac DTS, first, open the hood and locate the headlight assembly. Remove the retaining screws or clips to access the assembly, then gently pull it forward. Disconnect the bulb socket by twisting it counterclockwise, replace the old bulb with a new one, and reassemble everything by reversing the steps. Ensure the new bulb is secured properly before closing the hood.