I have a 2001 Yukon SLT 4x4 w/ 5.3 liter and every now and then I get a Low Coolant light that comes on. After I shut the vehicle down and then restart the light goes away and does not come on for weeks then it will pop back on. Sometimes it will come a couple days apart. The coolant level has been checked and it is ok. The vehicle does not run hot either. Where should I start to try and fix this before it becomes a bigger issue? Thanks, Joe

most likely a shorted sensor in the surge tank but of course you cant buy sensor it come free with the tank.