Great News, good job and congratulations!
Odd that the exhaust brake no longer automatically remains on. The check engine light will normally appear after flashing trucks with the Aisin transmission. It should turn itself off after four or five key cycles. So give that a try, before you take it into the shop. Remember to take it easy for a few days to allow the Aisin to adapt.
The main takeaway from this is that low battery voltage issues can cause file corruption in the PCM.
Be sure to backup your custom tuning file. Don’t rely solely on the original SD card as it can fail. If your tuning provider is no longer in business you will have to start over and purchase new tunes.
https://www.igotacummins.com/threads...EAD-IMPORTANT)
I would also recommend you pick up a 5 or 10 Amp battery charger/maintainer. The little one that you have now is only good as a maintainer once the batteries are fully charged. Not sure what type of batteries you have installed, maybe post a photo of the stickers on the top. If it’s an AGM you will need a compatible charger. The Norco chargers are great and have settings for Flooded, AGM and Lithium. Since you don’t drive the truck much you can leave these charger on as long as you want, all winter if necessary and it won’t over charge the battery. The advantage of the 10 amp is a faster charge or recovery time should the battery be allowed to fall into a low state of charge.
https://www.amazon.com/NOCO-GENIUS5-...e%2C189&sr=1-4
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