See also:

Roadside Service (U.S. and Canada)
U.S.: 1-800-224-1400 Canada: 1-800-882-1112. Text Telephone (TTY) Users (U.S. Only): 1-888-889-2438. Service is available 24 hours a day, 365 days a year. ...

Reporting Safety Defects to General Motors
In addition to notifying NHTSA (or Transport Canada) in a situation like this, notify General Motors. Call 1-800-458-8006, or write: Cadillac Customer Assistance Center Cadillac Motor Car Divi ...

Low-Beam Headlamps/Daytime Running Lamps (DRL), High-Beam Headlamps (Base)
1. From the back side of the headlamp assembly, remove the top cap to replace the low-beam headlamp/DRL bulb. 2. From the back side of the headlamp assembly, remove the bottom cap to repl ...