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Discussion Starter #1
okay so, ive got codes p0202 p0203 p0205 p0208 p2149
i know everyone says check alternator bracket went threw it 10 times. ive changed the ficm truck is runing like a tractor is there anything else to check.
 

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Go through every inch of that harness and also inspect the wires to/from the engine fuse panel.
You will be looking for any chaffed, worn insulation, broken wire, corrosion, etc...
The alt bracket is a popular spot for rub through
 

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Discussion Starter #3
i tore the whole bracket off and put my own hoseing on. ill check wires to the fuse pannel
 

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I have attached information from my 2008 model. Your truck has a separate FICM on it where mine has it as a part of the ECM. But you may find something here that will help you understand what is going on in general, and maybe something you can to do test your truck to pinpoint your problem.
 

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