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Old 09-14-2017, 08:25 PM   #1
bikernut
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Join Date: Jan 2008
Location: Soutwestern New Hampshire
Posts: 145
flashing check engine light

I have a flashing check engine light that flashes when I get between 2100-2500 rpm on my 2003,3500 with 6.0 engine. it will not set a code, it flashes for a bit and stops. It doesn't matter if I am hauling my small tractor, plowing snow or just steady driving. I have replaced the knock sensors with GM factory replacements to see if that was the problem but no. hoping some one has had the same thing happen and can send me in the right direction.
thanks
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1995 Harley FLT (2 tone Red)
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