Chevy and GMC Duramax Diesel Forum - p0087 low fuel wwwmaxforum›Chevy and GMC Duramax Diesel Forumthe truck is an 06 LBZ 3500 with 160k on it. Bought the truck a few months ago and driving it home all stock towing my camry up a hill put it in limp mode and threw code 0087 low rail pressure. Cleared it and just slowed down on the hills and changed the fuel filter when I got home.Author: Theolmm2009 Duramax LMM fuel filter problem! | PlowSite wwwsite››Chevy TrucksDec 23, 2008I have a 2500HD with a Duramax LMM (new body style). Just had the fuel filter changed two weeks ago and the truck went into limp mode say "reduced power". Had to have the fuel filter changed again. Dealer says it was clogged up. Dealer also says that he has had a lot of the same trucks in for the same thing.