Cadillac CTS Turn Signal Bulb Size
Cadillac CTS front inner turn signal bulb size 3157, front outer turn signal bulb size 12961, front turn signal bulb sizes 12188, 12272NA, and 3157, plus rear turn signal bulb size 3157. The replacement chart covers vehicle production years 2003 through 2013 with corresponding bulb specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
Front Inner Turn Signal
| Years | Bulb Size |
|---|---|
| 2003-2007 | 3157 |
Front Outer Turn Signal
| Years | Bulb Size |
|---|---|
| 2003-2007 | 12961 |
Front Turn Signal
| Years | Bulb Size |
|---|---|
| 2008-2013 | 12272NA (With HID Headlamps) |
| 12188 (With Halogen Capsule Headlamps) | |
| 2003-2007 | 3157 (Front) |
| 12961 (Side) |
Rear Turn Signal
| Years | Bulb Size |
|---|---|
| 2003-2007 | 3157 |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ANSI standard (US & Canada). Dual-filament wedge bulb (T25). 12V, 27W/7W. | 3157 |
| Philips part number. Miniature wedge bulb (T10) with W2.1x9.5d base. 12V, 5W. | 12961 |
| OEM part number. Natural amber glass variant. 12V. | 12272NA |
| Philips part number. Halogen bulb, specialty application. 12V. | 12188 |