my lly is not running any hotter than about 180-185ish no matter what kind of driving I am doing. Outside temps since I have owned it (3 weeks ago) have seen a high of about 70 and no less than 35....

Are these 210 thermostats in these vehicles? Is running less than full temp not efficient? My concern is how hot my heat will be in the winter, I have seen in other vehicles when you can get rain that will freeze on a windshield and you cannot melt it off with defrost on high.

The stats are 180* and 185* and if you are using the stock dash temp gauge then understand that it is nowhere near accurate as far as letting you know true engine temperatures.

that answers it, i was kind of suspecting lower temp stat's... the stock gauge is that far off?

that answers it, i was kind of suspecting lower temp stat's... the stock gauge is that far off?

oh yea real far off

wheres the best place to tap in for a water temp guage??

good question.... bump

You might just want to get a Scangauge II. The raw temp data is good. It's just that the computer tells the stock gauge what to show you, and well, it's an "altered truth".

You may wish to get some kind of scanner or tuner and watch the temp reading from the OBDII port, like the sevice tech with a Tech 2 would read it. The ECM seems to tell the turth. The dash gauge is truely goofy. (On edit)... I have seen 210 on the gauge and the ECM reporting from about 200 up to about 218.

You don't say what load you put on it. I think it takes many minutes of wide open throttle to get the temp to run up. Empty truck will govern the RPM long before the temp rises. 10,000 lbs trailer tied on the back running up a good grade for some number of miles likely will get the heat up.

On a cold day, sub zero F, it takes a while at highways speeds to get decent heat (not hot hot heat)....sometimes not the best without the winter front.