06 Silverdao Reverse and dome lights don't work. All other lights inside & out work fine.
I have the same problem, not sure, but I think it is related to my headlight switch. My windshield leaks and the switch has water damage. Check at your trailer light harness to see if you have power there, it runs off a separate circuit/fuse.
First check all of the fuses.then check the reverse switch on the transmission
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