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Thread: adjusting my fuel trims on my 08 gmc 1500 5.3 with dod

  1. #1
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    adjusting my fuel trims on my 08 gmc 1500 5.3 with dod

    i am a little new to this. had my fuel pump go bad. so i put in a 340 fuel pump. and was scanning the truck today and noticed that they were some -20's going on. so i was trying to get them closer to where they need to be.
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