Duramax L5P >Cummins 6.7L< LBZ
Guides for Duramax diesel owners.
Guides
Duramax L5P Problems — What Owners Actually Deal With
The L5P Duramax is GM's best diesel yet, but it has its quirks. A mechanic breaks down the real failure points.
Troubleshooting
P0087 Code on Duramax — Low Fuel Rail Pressure, Fixed
P0087 means your Duramax is starving for fuel. Here is how to diagnose it properly instead of throwing parts at it.
Troubleshooting
How to Clean a DPF Filter (Regeneration Guide for Diesel Trucks)
Your truck is asking for a DPF regen and you are not sure what to do. Here is what actually works, from a mechanic who has done hundreds of them.