12 Volt Power Not Working on 7-Way Trailer Connector on a 2003 Chevy 3500 Express Van

Question:

12 volt power not working on 7 way plug on a 03 chevy 3500 van where should i be looking to solve this problem.Just got new trailer that needs 12 volt to charge trailer battery.thanks for all your help.

asked by: Scott S

Expert Reply:

On some GM vehicles, there are some additional connections that need to be made under the hood to provide the 12 volt power to the 7-Way. We usually see this on trucks but it is possible that the full-size vans and SUVs could have the same problem. I have included a link to an FAQ that will help.

It is also possible that everything is hooked up under the hood but a fuse could just be missing or blown. You can consult the vehicle owners manual and/or the legend on the power distribution box lid for the location of the fuse related to the 12 volt power to the trailer connector.

expert reply by: Michael H