For 1988-1989 GMC R2500 License Light Bulb API 42533NZBV

For 1987-1991 GMC R2500 Suburban Back Up Light Bulb API 73743JYWX 1988 1989 1990

For 1985-1995 GMC G2500 Back Up Light Bulb API 95729WBST 1986 1987 1988 1989

For 1985-1995 GMC G1500 Back Up Light Bulb API 81273BYRB 1986 1987 1988 1989

For 1985-1996 GMC G3500 Back Up Light Bulb API 64855VNBJ 1986 1987 1988 1989

For 1987-1991 GMC R1500 Suburban Back Up Light Bulb API 34353GGCH 1988 1989 1990

For 1987-1989 GMC R3500 Back Up Light Bulb API 99139XZWM 1988 Back Up Light

For 1987-1989 GMC V3500 Back Up Light Bulb API 72636TBTN 1988 Back Up Light