When doing replacement or upgrading on 1975 - 1989 Buick Skyhawk, the bulb size guide is necessary for you to take the reference.
Jump to corresponding car model with the catalog bellow.
Low Beam Headlight 1975 - 1978, 1982 - 1988 H4656
1989 H4703
High Beam Headlight 1975 - 1978, 1982 - 1988 H4651
1989 H4701
High Beam and Low Beam Headlight 1979 - 1980 H6054
Front Fog Light 1986 - 1989 H3-55W
Back Up Light 1975 - 1980, 1982 - 1989 1156
Brake 1975 - 1980, 1982 - 1983 1157
1984 - 1989 2057
Dome Light 1975 - 1980, 1982 - 1987 561
1988 562
1989 578
Front Side Marker 1975 - 1980, 1982 - 1989 194
Front Turn Signal 1975 - 1980, 1982 - 1984 1157
1985 - 1989 2057
License Plate 1975 - 1980, 1982 - 1989 194
Parking Light 1975 - 1980, 1982 - 1985 1157
1986 - 1989 2057
Rear Side Marker 1975 - 1980, 1982 - 1989 194
Rear Turn Signal 1980 1156
1975 - 1979, 1982 - 1983 1157
1984 - 1989 2057
Tail Light 1975 - 1980, 1982 - 1983 1157
1984 - 1989 2057
Center High Mount Stop Light 1988 - 1989 1156
1986 - 1987 912
Courtesy 1982 - 1989 168
1977 1893
1979 194
1975 - 1976 562
Engine Compartment Light 1976 - 1979 1003
1980, 1982 - 1987 1156
1988 - 1989 89
Glove Box 1980 1891
1975 - 1979 1893
1985 - 1988 194
Map Light 1989 1003
1980 1004
1988 562
1982 - 1987 90
Radio Display 1975 - 1976 1816
1978 1893
1979 - 1980, 1982 - 1987 194
Trunk 1975 - 1976, 1980, 1982 - 1987 1003
1988 - 1989 89