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

For 1989 Chevrolet R2500 Auto Trans Downshift Relay Connector SMP 21778ZDRV

For 1987-1991 Chevrolet G20 Auto Trans Downshift Relay Connector SMP 57781HHVM

For 1988-1991 Chevrolet C2500 Auto Trans Downshift Relay Connector SMP 31121MDQD

For 1987-1991 Chevrolet G30 Auto Trans Downshift Relay Connector SMP 46152RVZS

For 1988-1991 Chevrolet K2500 Auto Trans Downshift Relay Connector SMP 81115HGRV

For 1988-1991 Chevrolet K1500 Auto Trans Downshift Relay Connector SMP 47266FKRB

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