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International Automotive Technicians Network
Re: 02 Duramax lacks power when pulling trailer
Posted to Technical Discussion Forum on 12/7/2011

TP data would be great here but I see a large difference between desired and actual FRP mpa. Your codes indicate the PCM agrees. Check filter restriction. Preform max pressure test. If Freeze frame indicates a long engine run time you may not get the test to f... Login to read more.