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    LMM: Getting code P2454

    Update. Took truck for drive and the engine lite, code p2454 was gone. Looked with programmer and it showed old code of p0128 and p2454, nothing current. Not sure why this cleared up on its own but wanted to give update. Thanks to those who responded with suggestions.
  2. 0

    Engine codes p0128,p2454

    Truck is stock like new and the exhaust is all original as well, no mods anywhere.
  3. 0

    Engine codes p0128,p2454

    Got this new to me 07 GMC Duramax 3500 HD DRW, 1 ton truck and have had these two codes come up within about 500 miles now. The p2454 came on and stayed on for a couple days and then this morning when I drove, no engine lite. Put scanner on and it said two stored codes were p2454 and p0128...
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    LMM: Getting code P2454

    It is all original no engine or wheel modifications. Thanks
  5. 0

    LMM: Getting code P2454

    Just bought a 07 GMC 3500 Duramax 1 ton with Allison Trans. Got maybe 500 miles and I get a engine lite and code given is P2454. Anyone have this code and what was required to resolve. Thanks
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