GM truck P0445/P0449

Terk

Joined: Dec 22, 1999

Posts: 18,400

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11:46a, 10/27/16

AG

Best way to troubleshoot this? I cleaned out the canister and it cleared the code for a while, but now I assume that I need to troubleshoot further. Evap solenoid and lines next?

Silvy

Joined: Nov 22, 2010

Posts: 12,259

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11:50a, 10/27/16

AG

http://www.gmtruckclub.com/forum/threads/how-to-fix-code-p0449-evap-pics-video-and-part-s.110446/

Ogre09

Joined: Dec 28, 2007

Posts: 14,277

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1:17p, 10/30/16

AG

Fought that for awhile. Gas tank pressure sensor fixed it for me.