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Old 12-03-2018, 08:50 AM
Kennedy Kennedy is online now
Long Distance Crew Chief for BMDMAX
 
Join Date: Mar 2000
Location: Loyal WI US
Posts: 10,673
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Back in the day when these trucks were new (and I think limited to 2001 models) the rolling idle flow chart was this:

1) Rolling idle cold= software
2) Rolling idle warm= regulator

Now all of this should be old news and the model year does not fit, but I would also be looking at the fuel filter and say that you need a lift pump. The CP3 has been known to last seemingly forever.

My other thought which is the most likely is the source of the reman pump. I see LOT of sub standard stuff especially if "reman" by anybody other than Bosch Factory. I won't name names, but I suspect the answer will be coming soon.

More reading on lift pumps: http://www.kennedydiesel.com/docs/Du...ift%20pump.pdf
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2012 GMC K3500SRW D/A CC Long LTZ Happy Birthday to me! Built 1 working day after my birthday and delivered 7 days later.
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