What causes a GMC Yukon to have a p0446 code?
What causes a GMC Yukon to have a p0446 code? It’s really easy to replace. There are a few clips that you need to find and remove. Evap System Hose – The hose that carries the fuel vapor from the fuel tank to the intake manifold can begin to leak. This will cause the P0446 code. Look for either a tear or hole in it. What is the trouble code on my GMC Yukon? P0446 GMC Yukon. August 13, 2018. One of the most common trouble codes with the GMC Yukon is the P0446 code. This trouble code references a...