GMC Sierra P Codes (Powertrain) P0400 - P0499 P0449

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3 discussions

Code PO449?

2009 GMC SIERRA

I Have The Truck Listed Above. It Started Sputtering, Hesitating, Not Shifting Right Like It Had Bad Gas. We Went To O Reilly's, And...

2 ANSWERS

5 IMAGES

Asked by Leahreneeb

2008 GMC SIERRA

Last Year I Replaced The Evaporative Emission Control Solenoid, And The Code Was Gone And Now It's Come Back. Can You Plese Send Me A...

5 ANSWERS

7 IMAGES

Asked by Aggie826

2007 GMC SIERRA

My Check Engine Light Came On A Few Weeks Ago And It Would Not Come On Some Times Until I Drove For Awhile. Now It Stays On All The Time....

3 ANSWERS

Asked by carter96

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