Standard T-Series Ignition Control Module for 1987-1988 GMC R3500 4.8L 5.7L yw

Standard T-Series Ignition Control Module for 1987-1988 Chevrolet R30 4.8L er

Standard T-Series Ignition Control Module for 1987-1988 Chevrolet R20 4.8L au

Standard T-Series Ignition Control Module for 1987-1988 GMC R2500 4.8L L6 - oa

Standard T-Series Ignition Control Module for 1979-1992 GMC P3500 4.8L 5.7L em

Standard T-Series Ignition Control Module for 1979-1989 GMC P2500 4.8L 5.7L ek

Standard T-Series Ignition Control Module for 1979-1986 GMC C3500 4.8L 5.7L tg

Standard T-Series Ignition Control Module for 1979-1986 GMC K2500 4.8L 5.7L bg