I am having an issue with my trucks glow plugs taking longer than usual to warm up. I have a 2006 Silverado 6.6 LBZ and have found that they came with fast warming glow plugs. I live in Key West, FL and it does not get cold here so i should never even see my wait to start light. Every morning and if it sits for more than a few hours I have to wait almost a whole minute or more for the light to go out. It keeps throwing a #2 glow plug code but i have had it replaced and still the same issue. Could it possibly be the harness for the glow plugs? Average low temp lately has been 65.