GM 12pin to OBD1 OBD2 connector Posted on December 17, 2018 by VCDS GM 12pin to OBD1 obd2 connector Package including: 1pc X GM 12pin to OBD1 OBD2 connector GM 12pin to OBD1 OBD2 connector Tags: GMobd1 to obd2 connectorcar diagnostic cablegm cable +