I don't know where the electrical ground is. what else is there to check?
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2007 Chevrolet Silverado 1500
Question: brake lights don't work, overhead cab light does. I have replaced bubs/fuse
Answer #1milesauto from Miles Auto Service Inc., January 29, 2013, 13:04Master
Check to see if high mounted brake lamp works. That lamp is works directly from stop light switch and does not go through turn signal switch. Not likely a ground problem.
Replygauvas, January 29, 2013, 13:06Rookie
Yes the high mounted brake lamp does work. Do the rear brake lights go thru the turn signal switch?
Replymilesauto, January 29, 2013, 15:00Master
Yes...but check the bulbs on both sides first..could be blown fillements on 2 bulbs. I would then test at the sockets with a test light while someone steps on brake. Double check fuses. and check to see if a trailer wire harness could have been installed and having corosion issues there.
Replygauvas, January 29, 2013, 16:45Rookie
Thanx for your help I will check both areas