For Chevrolet R2500 Suburban Auto Trans Downshift Relay Connector SMP 38558ZWWF

For 1987, 1989 GMC R2500 Auto Trans Downshift Relay Connector SMP 33626HZDN

For 1989-1991 Chevrolet V3500 Auto Trans Downshift Relay Connector SMP 83444XHVX

For 1989-1991 Chevrolet R3500 Auto Trans Downshift Relay Connector SMP 51171MWZS

For Chevrolet Lumina Auto Trans Downshift Relay Connector SMP 11834RYQC

For Chevrolet V2500 Suburban Auto Trans Downshift Relay Connector SMP 19393VJRC