Ok guys, I just bought an 07 LBZ and everything is perfect on it. This is my first Duramax or diesel for that matter so this may sound like a silly question. But I ran my very first tank of diesel low and on the way to get more my glowplug light came on and didn't go off until I put diesel in it. Or shut the engine off and cranked it up. I thought at first it was the low fuel light but after a day or so I thought that was a silly thought. I'm sure it would say "low fuel" on the info panel on the dash. No check engine light, should I get it checked at autozone?