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Re: 5.9 Cummins Idle Validation Switch
Posted to HD/Fleet Forum on 4/21/2024 2 Replies

Hi Jake: Quickserve shows ISB CM550

ESN: 56616754

Any service info on any criteria… what sets code? Diagnostic path ? Proper definition ?

I'm at a loss as to why that code is not listed

Thanks as always, Dave Login to read more.

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