Cooling Issues

[jts2020]

I own a 2011 Chevy Silverado Z-71 LTZ with LC9 engine. I currently am running a AEM CAI, aftermarket mass air, throttle spacer, flowmaster exhaust and a Bully Dog triple dog programmer. Here as of the past few months the truck has been running hotter than usual never overheating but will jump up not sure if it is the reading on the programmer. Sometimes seems that the low speed fan is not kicking on. Dealer can not find any issues has anyone had any other problems?

[crankman]

Is it sitting on 210 normally then going up? How high? Not sure i understand the part where you say its reading the programmer. Did this start after you used the programmer?

[jts2020]

On the gauge it hangs out there, but looking at the programmer it has gone as high as 230. There is a reading on the programmer that shows a digital read out. The factory gauge has shown movement not to a crazy extreme. No, the programmer has been on the truck for over a year and the problem is very recent.

[elite0259]

I'd check your coolant level, sometimes they'll run hot if it's low.