Lmm Dtc 2459

[stymief16]

Anyone have any idea or resource to find out what my LMM DTC 2459 means? I'm towing heavy (about 15K) through Canada right now and the 2459 tripped last night. My PPE DTC list doesn't list it and their website plus a google search resulted in nada. The truck seems to be running fine, with no noticeable problems when the code tripped or since. IDEAS? THANKS! - Stymie

[duramaxdr]

This code means the DPF is regenerating to often. This code can set when you are pulling a heavy trailer. GM has a new software program to address this concern. It should also be noted the if your PPE programmer is turning the power up to much this will add additional soot to the DPF and can also cause this code to set.
Bottom line...Remove your PPE and take it to the dealer and let them flash it with the new program.

DPF stands for Diesel Particulate Filter