I had the message pop up on my screen so I took it to the dealer yesterday. They looked at the message, popped the hood and looked at the level and decided everthing was ok. Got back in my truck and reset the computer. They told me that since I only have 32,000 miles on my truck I should not worry about anything and the message just means to look at the level of the coolant to make sure I have enough. They said to bring it back at 80K to have the coolant flushed. Does this sound right? I know they sell test kits and I even asked the guy if they needed to test it, but his response was not with 32000 miles on it.