The IAT is in the air cleaner box or the air intake hose to the engine, it measures intake air temperture (IAT), the fuel line runs along the frame rail on the drivers side, crawl under the truck you will see it, it is a 3/8" metal or black plastic line from the fuel tank
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The IAT is in the air cleaner box or the air intake hose to the engine, it measures intake air temperture (IAT), the fuel line runs along the frame rail on the drivers side, crawl under the truck you will see it, it is a 3/8" metal or black plastic line from the fuel tank