Pontiac Grand LeMans Turn Signal Bulb Size
Pontiac Grand LeMans front turn signal bulbs use 1034NA or 1157NA size, while rear turn signal bulbs use 1156 or 1157 size. The replacement chart covers 1975 through 1981 production years with corresponding bulb size specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
Front Turn Signal
If US Type and EU Type show the same value, a direct cross-reference for this bulb is not available or the data is insufficient.
| Years | US Type | EU Type | Shop |
|---|---|---|---|
| 1981 | 1034NA | 1034NA | Check Price |
| 1978-1980 | 1157NA | P21/5W | Check Price |
| 1977 | 1034NA | 1034NA | Check Price |
| 1976 | 1157NA | P21/5W | Check Price |
| 1975 | 1034NA | 1034NA | Check Price |
Rear Turn Signal
| Years | US Type | EU Type | Shop |
|---|---|---|---|
| 1980-1981 | 1156 | P21W | Check Price |
| 1979 | 1157 | P21/5W | Check Price |
| 1978 | 1156 | P21W | Check Price |
| 1975-1977 | 1157 | P21/5W | Check Price |
Bulb Specifications
| Description | Type | Shop |
|---|---|---|
| ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base, natural amber glass. Variant of 1157. 12V, 21/5W. | 1034NA | Check Price |
| ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base, natural amber glass. 12V, 21W/5W. | 1157NA | Check Price |
| ECE standard (Europe & worldwide). Dual-filament signalling bulb with BAY15d bayonet base. 12V, 21W/5W. | P21/5W | Check Price |
| ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 21W. | 1156 | Check Price |
| ECE standard (Europe & worldwide). Single-filament signalling bulb with BA15s bayonet base. 12V, 21W. | P21W | Check Price |
| ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. 12V, 21W/5W. | 1157 | Check Price |