I have a 2007 chevy 3500 classic. It has a lbz engine. I am getting p087 code- low rail pressure. Took it to chev dealer & said #1 injector was low but in spec so they replaced it. Still not right. You get the truck hot and ask for full fuel it derates and you have to cut eng off for 2 minutes to reset computer. Changed fuel filter to ac delco filter. Dealer thinks it is my K&N air filter. They want me to put stock back on but I don't have it anymore. Cannot belive it is air related. I put a new mass airflow senor on but did not help. Someone said it was a weak spring in the fuel rail and there was a shim kit out there. How much trouble is this to fix? Any ideas on what's wrong?
ironhide2007
Joined
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3,252 Posts
Go to a gm dealership, look at a brand new lml look at the fuel lines running from the tank to the engine and you will not see a lift pump. end of discussion. The duramax has 1, ONE, UNO,SINGLE pump on it located in the engine valley. Whatever you think they took from you you are mistaken, there is no lift pump on these trucks from the factory. Please admit you're wrong before the wolves come in
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