obd 2 port not working

[Silver GTP]

Check and see if the lighter fuse is blown again. I have worked on other GM products that share the same fuse for the OBD II port and the lighter. Maybe the new fuse you put in blew again right away due to a short.

[Scottydoggs]

Check and see if the lighter fuse is blown again. I have worked on other GM products that share the same fuse for the OBD II port and the lighter. Maybe the new fuse you put in blew again right away due to a short.

the lighter now works, but like you say, it could share a fuse and not have it marked. he gonna have to go back and see if it works or not. if no ill look at the wires as far as i can get to/see, if i cant find anything its off to the shop for him.