GrumpyAeroGuy

I had a head unit fail, and it had to be replaced. I have read here that a battery disconnect for an amount of time may fix it. Someone may chime in on more details for that. Some have reported a bad HDMI cable that may cause this. Unfortunately, a failed touch screen smells to me like a head unit failure and may require replacement (sorry). That said, I am in no way an AV God, or expert. Sent from my LM-G710 using Tapatalk

Love it Sent from my LM-G710 using Tapatalk

I can't answer your question specifically, but I can offer this up. I have a 2016 5.3l 8sp. Not sure where it tops out, but I know I had it past 85 mph briefly more than a few times. 84 seems odd to me, as certain areas of the country have 75mph speed limits on interstates I seem to recall.... Have it checked out. Sent from my LM-G710 using Tapatalk

Had the flush done (under warranty) 2 weeks ago to eliminate shudder on-set. 8sp/2016/51000mi. Eliminated it completely. In fact, I would say the transmission is very much improved overall. Fixed it for me. Sent from my LM-G710 using Tapatalk

Is it possible your headlights are turning on? If it is overcast, the auto headlights can gi on, or off, at will. This could cause this. (???) Sent from my LM-G710 using Tapatalk

I suspect this is a discrete, succinct, issue. As you have an 18, I assume you are still under a b2b warranty. Frustrating, I know. Trip to the dealer seems to be in order here. Almost sounds like a flakey ground, or a loose connector, bad door switch, or something of that order.... My experience suggests that the software is ok, but it is only as good/bad as what's being fed to it as inputs/ variables----which leads back to a potential ground/connector/switch issue, potentially. Sent from my LM-G710 using Tapatalk

Yeah, I was thinking new BCM... Shot in the dark, tho. Sorry man. I can palpate and sympathize with your frustration.... Sent from my LM-G710 using Tapatalk

I seem to recall that there Is a way to export a config file and reimport it via USB port. Never done it. Recall reading that in my manual... OR, I misunderstood what it was trying to say. Maybe this helps... Sent from my LM-G710 using Tapatalk

On-star to locate? Sent from my LM-G710 using Tapatalk

Agreed...had a similar issue about a year ago... Sent from my LM-G710 using Tapatalk

Not only the 14s and 15s. My 2016 hmi module bought the farm as well, recently. This issue seems a bit more prevalent than we think. Sent from my LM-G710 using Tapatalk

Not sure if this applies to any of these codes.... I had remote start fail due to a faulty throttle position sensor...(?) Sent from my LM-G710 using Tapatalk

If you paid by credit catfish, dispute the charge. Trust me, they will contact youngster that... Sent from my LM-G710 using Tapatalk

Yes, most likely. Happens to mine during inclement conditions occasionally. Sent from my LM-G710 using Tapatalk

I had the black screen. Just eeked in prior to bumper to bumper running out. They tried a new hmi cable, and ended up replacing the head unit as well. Keep up the good fight. This issue, if both the hmi and head unit need fixing is most likely well north of $1000. Best of luck. Sent from my LM-G710 using Tapatalk