Flashing on/off/full screen/partial screen and sometimes I get "sys" on the radout. What's the cure?
take to dealer for a scan,could be nothing but a bad lcd better safe than sorry.
Yes, sounds like your LCD is taking a dump. This was common on early GM cars with digital dash/LCD screens like the Buick Reatta, Riviera, etc. These can be rebuilt but can be pricey. Google "digital dash rebuilders" to get a price quote.
I didn't mention it was a Corvette, probably doesn't matter much.
no it don't
Tpms with malfunction will cause this , remove fuse for mirrors will make this problem go away , you just won't have mirrors or visor lighting
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