Workhorse Transmission stuck in park
I had a one time problem today with my transmission being stuck in park. I tried for about 15 minutes before it finally began operating as normal. I tried a regular start-up and the thing just seemed ...
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Brake pedal switch can cause this. It has several circuits, some normally open some normally closed. The interlock circuit may not be the same as the brake light circuit. You can test it by pulling the plug, and using a multimeter to check if continuity changes at the proper pins.
