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Just throwing this out there. I started getting the TBC fault code with no trailer
hooked up. Kind of did it when I would hit a bump. Did some researching and
found a couple videos on youtube that showed a solder joint break. So I tore into the dash,
pulled the TBC unit out and popped the lid and sure enough there was bad joint. Had to look
hard with a magnifying glass but I re-soldered it and it works normal again.
Gotta love youtube.