FCA Letter: Diesel Engine Calibration - Your Vehicle Must Be Repaired

[Shurup]

Anyone else got this and has taken their trucks in?

What exactly do the "MUST" modify?

If it's something critical that will result in engine failure if left unfinished, then I will bring it in.

I might sound paranoid but to me "The engine control software in your vehicle must be modified with a new calibration to improve emission control performance" this sounds like they're wanting tighten up truck's emission to comply with some newer BS regulations?

It will surely come at the cost of fuel and or DEF consumption.

I like the way my truck is right now, it is a much better vehicle than my 5.7L Tundra, and the fuel economy is better as well.

It will only get better once I delete all the crap.

The last thing I need/want right now if for them to **** up a perfectly functioning truck.

Any ideas what this is really about?

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