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code po449: need help

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#1

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04-08-2007, 09:07 PM

bobboinge

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code po449: need help

I have this po449 code. Changed gas cap already and looked everything over. Any ideas????
2003 sierra 5.3 T ....

Last edited by bobboinge; 04-09-2007 at 05:02 PM.

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#2

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04-09-2007, 04:00 PM

maxwedge

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Re: code po449: need help

Check this link. http://service.gm.com/gmspo/mode6/pd...t57R_LD_tE.pdf, this requires tracking down vent solenoid issues, I guessed at you trucks year as you did not post it ( must)

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