So when i go to start up my truck and let it run, right before it gets up to temp the heat works fantastic but as soon as it gets up to temp the temp on my gauge just drops and i have to let the heat kind of almost charge up to use it, also i have a steady coolant leak but cant find from where...
so from what i understand its not a standard cabin filter like most new cars, i believe its actually a metal one built in but i could be wrong, also it sounds like you might have a clog in your vents
So i have a 01 Yukon with the 5.3, had a cylinder 3 misfire (p0303) according to cheap scan tool. misfire got worse and threw flashing CEL when i pulled cyl 3 spark plug to check. moved spark plugs and wires from 1-3 and moved injector, code went away but still misfired. Installed new intake...
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