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engine codes

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05-23-2016, 12:47 PM	#1
1970greenc10 Senior Member Join Date: Oct 2008 Location: Forestville, NY Posts: 225	engine codes Hi, my 03 Silverado 2wd with a 5.3 is throwing codes, U1002,P0725,P3531, and P0455 which I know is a large evap leak. Can anyone tell me what the first 3 codes are for. I tried googling them, but couldn't find anything. Thanks, Marty __________________ My Chevys 79 caprice classic 70 c/10 69 k/10 03 silverado

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