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Thread: Need some help
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06-24-2015, 05:59 PM #1
Need some help
I know this ain't LT1 related but I need some advice. My wife has a 05 burban LT 5.3 flex fuel a few weeks ago she started complaining that it was losing power. I would drive it ran normal last week I finally got it to act up now it won't get out of it's own way. I have delated the converters, fuel pressure holding at 60 psi, changed plugs, wires, motovac fuel injection system. Nothing has helped. Bank 1 1 3 5 and 7 plugs we're all failed out bank 2 plugs looked normal. It only has a p0300 code. Any help or recommendation would be greatly appreciated. Thanks Jason.
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