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Limp mode/ engine runs rough.

Bigreddaddy

New Member
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Location
Washburn, ME
New to the site and looking for advice. I have a 2003 Duramax. Engine runs rough almost like a misfire at low rpm. Runs great at high rpm. It will go into limp mode once in a while. Throws codes for injectors 1,4,6,7 and injector bank a everytime. One in awhile it will throw a low speed fuel pump code. Please help
 
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