GMC W6500 Forward Turn Signal Bulb Size

GMC W6500 Forward front and rear turn signal bulbs use 1073, 2057, or 1157 size specifications. The replacement chart covers vehicle production spanning 1987 to 1996.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

Front Turn Signal

YearsBulb Size
19961073 (Tiltmaster)
19952057 (Tiltmaster)
1993-19941073 (Tiltmaster)
19922057 (Medium Duty)
1073 (Tiltmaster)
1989-19911157 (Medium Duty)
1073 (Tiltmaster)
19882057
19872057
1157 (Medium Duty)
1073 (With 4 Round Headlamps)

Rear Turn Signal

YearsBulb Size
1995-19961073 (Tiltmaster)
19942057 (Tiltmaster)
19931073 (Tiltmaster)
19922057 (Medium Duty)
1073 (Tiltmaster)
19911157 (Medium Duty)
2057 (Tiltmaster)
19902057 (Medium Duty)
1073 (Tiltmaster)
19891157 (Medium Duty)
1073 (Tiltmaster)
19881157 (Medium Duty)
2057 (Tiltmaster)
19872057
1073 (With 4 Round Headlamps)

Bulb Specifications

Description Bulb Size
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Lower wattage variant of 1156. 12V, 13W.1073
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. Brighter variant of 1157. 12V, 26.9W/8W.2057
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. 12V, 21W/5W.1157

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