Yes. The light will stay on longer as it gets colder. If you ever have any doubts about it, you can always leave the key in the run position for a longer period of time before you crank the engine. The glow plug relay will still be energized for a longer period of time than what the light says anyway.
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Tuning, flashing, burning chips, and repairing all aspects of 7.3L Powerstrokes.
SEVEN 7.3L-powered vehicles in the driveway. Two didn't come that way from the factory!
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