To enable the high idle on a 03-07 5.9 Cummins do the following:
To use the high idle feature do the following:
These steps will only work on vehicles that have the ECM B plug pin number 22 grounded from the factory. This includes the majority of the trucks equipped with automatic transmissions. Some trucks will require that that pin be grounded first, including many Manual transmission trucks. There are many walk-thru guides that can be found in several forums on how to accomplish this if your truck needs it.
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