Hello everyone. I have a 2007.5 GMC Sierra 1500 with the 5.3 gas motor. The trucks been saying "coolant level low add coolant" on the dash for a while now. The coolant is not low, and I don't have a leak. It's also not getting hot or anything like that. My mechanic looked at it and can't seem to figure out why its doing that. He looked and can't find a location of a coolant level sensor, and there aren't any wires going to the tank. If anyone has ever dealt with this before or knows what I need to do to fix it, any help wold be great.
