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Re: 2005 Chevy k1500 code P0446
Posted to Technical Discussion Forum on 6/5/2010 3 Replies

There have been some good replies to your post. Just remember to test, not guess. This code will also set if the fuel tank pressure sensor is not working correctly. The PCM relies on a good pressure sensor to check the EVAP system.

I had a vehicle that I ass... Login to read more.

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