GMC C1500 Suburban Courtesy Bulb Size
The GMC C1500 Suburban uses courtesy light bulbs in sizes 74, 168, 194, 1003, 1004, 161, and 93. Data for the specified lighting components covers the range from 1979 to 1999.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
Bulb Size by Year Range
| Years | Bulb Size |
|---|---|
| 1999 | 74 |
| 1998 | 168 |
| 1997 | 194 |
| 1995-1996 | 168 |
| 1993-1994 | 1003 |
| 1992 | 168 |
| 1984-1986 | 1003 |
| 1983 | 1004 |
| 1980 | 161 |
| 1979 | 93 |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ANSI standard (US & Canada). Miniature wedge bulb (T5). 12V, 1.4W. | 74 |
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 4.9W. | 168 |
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W. | 194 |
| ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 21W. | 1003 |
| ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. Variant of 1157. 12V, 21/5W. | 1004 |
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 1W. | 161 |
| ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Lower wattage variant of 1156. 12V, 13W. | 93 |