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2021 Suburban Camera Lines Gone

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Wondering if anyone else has experienced this. Took delivery of 2021 Suburban High Country a few weeks back. Camera system worked fine and the camera guidance lines showed up on the different views. Now, the lines are gone. All the cameras still work, but the lines are gone. Reading through the manual and flipping through the settings, I can't figure out how to toggle them back on (or if that's even an option in this model). 

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You can turn them on and off through your camera app.  When you have the camera up, I believe the icon on the touch screen that looks like a ladder is what you need to select.  You may need to push it a couple of times to cycle through the options.  All else fails, check your owner's manual.



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