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Discussion Starter #1
hey guys i have the PO380 code on. glow plug heater circuit A. i did some searching on here and figure I have either a bad glow plug or perhaps a whole module or something i need to replace. the last few nights have been pretty cold and the truck turns over for a long time before it starts now. does that mean its probably not just a glow plug but maybe the whole module? how do i tell for sure and what exactly is it i need to buy?? thanks!!
 

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as you said, p0380 usually indicates 1 or more bad glow plugs, g/p controller, or the 175 amp fuse. check the glowplugs first. take the rail off of them and get a test light, hook it to the pos side of the battery and touch the tip of each glowplug. if it lights up the glowplug is bad.
 

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Discussion Starter #5
i checked the 5 i could reach the easiest and every one of them was bad so i gave up and decided ill just order 8 new ones. this truck came from texas then arizona so who knows how long they been bad
 
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