2004 GMC Sierra fuel

2004 GMC SIERRA
98,000 MILES • V8 • 4WD • AUTOMATIC
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EMUFICH
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  • 1 POST
gmc 5.3 v8 seems to be burning to rich. black exaust pipe and high fuel cunsumption.
Mar 26, 2010 at 8:25 AM
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JACOBANDNICKOLAS
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  • 110,175 POSTS
Has the check engine light come on?
Apr 3, 2010 at 3:36 PM