Thread: 04 avalanche 5.3 running lean on bank 1
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Old 01-14-2008, 08:52 PM   #3
Dre11111
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Re: 04 avalanche 5.3 running lean on bank 1
No there isn't any missfire codes, Intake manifold, the truck idles nice so I don't think there's a fowl plug, I'll pull them and check, The O2 code is gone now, just the running lean on bank one,
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