Put in an aftermarket head unit (OGM1) and back up camera in a 2012 Sierra around 2013/14, and the back up system has worked fine since then. A couple months ago, the monitor started showing interm...
Yeah, sort of hoping I could do some other examinations before checking the connections. As I overkill everything, each connection is triple or quadruple wrapped with electricians tape and heat shrink tubes!! Oh, well if it has to be done....
Marv
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