About a month ago I was driving in some loose sand and got a "service brake system" alarm on the DIC accompanied with the ABS and brake light. When it happened the truck made a ding ding ding at a fast pace. After driving a short distance the lights went away. Now the truck ding ding dings the same way when I start or shut off the truck, but only occasionaly. I could not get it to do it at the dealer. It is acting up more frequently now like not dinging with the door is open but the engine is on. And I thought it used to say something on the DIC if the door was open and the engine on. Anyhow, has anyone else found this problem? Can you get a flash to fix it? I need some help gettining info to the dealer so they can fix it.