I'm not sure of the processes you've gone through with your Edge CS2 # EP85350, but this most commonly occurs when you haven't chosen a custom tune for your vehicle- which would be the only way to set a tire size. You'll want to choose a tune- like the "towing" option, which you can then customize with your tire size. If you've done this process of choosing a tune and it's still not showing up, let me know and I can continue to help you troubleshoot this. view full answer...
I was unable to find you in our system to determine the tuner you purchased from us but if it's the Edge Gas Evolution CS2 Performance Tuner # EP85350, that fits your 2005 Silverado 1500 with a 5.3L engine there are a couple of potential issues.
Since you mentioned the power to the cigarette lighters is good, and I assume it isn't too hot via being in direct sunlight, I am guessing that you have a malfunction. According to the linked installation instructions you can update it with the... view full answer...
Seems like a software issue with your CTS Tuner EP84130. You should go to https://edgeproducts.com/update-store/ and update the firmware and if that's not the issue, we can dive further in to find the problem. view full answer...
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