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First, check the batteries and the alternator(s). If they are weak, they will kick this code because the FICM isn't getting the right voltage it needs.
Then since you replaced the FICM, check the connections to make sure nothing came loose or there are no rubbing on the harness. Also check the programming on the FICM for if you don;t have the software revisions matched due to the new software updates on the FICM from the vendor, but didn't update the PCM, you could have a mismatch and create the code as well.
Those are the p6011 codes. Also CLICK HERE for some great FICM info.
Now for the no start. You started the vehicle and ran it. did the engine get hot? If so, let it cool and then try to start again. If it starts, then the reason your IPR went out is because there is a leak with one of the seals on the injectors. If you have a scanner, see if the rail see 800 or better PSI during cranking on the ICP. If not, the seals are leaking and that is causing the no start. Now if you do have that reading, then the issue is all with the FICM side and you'll need to check the steps above to rule some things out.
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