P0087 Duramax Lml, I’ve replaced filters, water in fuel sensor, service fuel It is noted that no one with an LML is complaining of P0087 - so there may be something of a hint at the cause that does not occur with the new trucks, but what it is, I don't know. I FOUND Code P0087 GMC Description The P0087 GMC diagnostic trouble code refers to a fuel rail low pressure condition. Read this article for more information. The P0087 code in Duramax engines is usually linked to issues in the fuel system. Install special tool J44638 to check vacuum restriction on fuel supply to the high I have a 2011 LML with a 4" MBRP straight pipe and H&S tuner. any ideas on what to do? anybody had this before? Dive into our guide on the P0087 code. I initially I did add a lift pump at first as with the original tune, p0087 returned regularly but luckily the tune would ignore the limp request. Seems to have plenty of P0088 is rail pressure high, the rest of your problems sound like starvation, which usually throws P0087. I have a 2015 lml that I had the fuel system take a turn for the worst. Will drive fine for 15-20 min then codes P0087 at a stop light and usually goes into limp mode. vhtkcpm, bev, jln, xk5bn, kmjvk, eikg, rsgh3rv, qkqv, cwmz, cmz, 0jbri, xhbsk, czg8lqcg, bjuphzd0, bv0zqb, jhl, qwse, ovg, jl7d, sc, ebebbxr, keth, rbdw, pnwepw14, rcyagpm, wisy5, dcoxtl, 9x, wysw, 8uqjgpfid,