Join Date: Feb 2008
Location: Yellowknife, NT, Canada
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Double check that BOTH grid heaters are functional. Mine was a real pig when only one was working, even when it wasnt very cold at all (-10c). Now with both working, it flashes right up @ -30c no problem. Easy test, just throw a multimeter on the wires at the manifold. cycle the key and check for voltage, then do the other one. dont cycle the key more than a couple of times without letting it sit for a minute or you could risk cooking the grid heaters.
Also make sure that the block heater is functional. Test it with a multimeter, should show resistance between the hot and neutral prongs and open from ground to either one.
2015 3500 laramie dually. 6.7, aisin, 4.10s, bone stock... (for now
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2014 forest river XLR 395amp, 42.5ft of truck killing, wind catching, toy and booze hauling, fun...