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Duramax elevated idle programming: 1) Turn the key to ON. 2) Push accelerator pedal to the floor. 3) Push the brake pedal 3 times. 4) Release accelerator pedal. 5) Start engine. If it is below 32*F/0*C (and some other conditions), it will display Elevated Idle and will do it until engine warms up, you press a pedal, or put it in gear. (basically) It will not do it above 32*F. It will stay programmed for the future. To turn it off, do the same process.

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16y ago

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