2006 GMC C1500 code po449

2006 GMC C1500
55,000 MILES • V8 • 2WD • AUTOMATIC
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BOWTIEZ28
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  • 1 POST
code po449 can't seem to get rid of this code. have done and replaced ALL part's that are the proable causes. purge valve.emmissions canister and vent control valve can anyone HELP PLEASE!!!!! Thank's John
Oct 22, 2008 at 8:16 PM
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MASTERTECHTIM
  • ✓ASE Certified Mechanic
  • 4,750 POSTS
  • ASE Certified Mechanic
gas cap? i just got burned on one like this because i overlooked the obvious. thats the first thing i check from now on.
Oct 22, 2008 at 8:42 PM
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DENNYP
  • ✓ASE Certified Mechanic
  • 1,824 POSTS
  • ASE Certified Mechanic
You can take it to the dealer and have it pressure tested for leaks. I have seen many with leaks at the fuel pump module seal.
Oct 28, 2008 at 11:33 AM
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