Bought our Denali around Jan 2021. Currently have around 12,000 miles.
1. Running board speed is stupid slow and cant adjust speed
2. A warning alarm comes up every other time regarding cameras and cameras wont work (GMC cant figure out problem)
3. Alarm started about two weeks ago saying SD...
We bought ours not long after you did and A few weeks ago every other time we would go to reverse a warning came on screen and cameras would not work. Then last week an alarm came up saying SD card failure. Then a few days ago weird stuff with NAV started happening. Then....lol yesterday 6/3/21...
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