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Attention: TDR Forum Junkies
To the point: Click this link and check out the Front Page News story(ies) where we are tracking the introduction of the 2025 Ram HD trucks.

Thanks, TDR Staff
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    Engine/Transmission (1998.5 - 2002) 2000 Ram 2500 5.9 Diesel 279,000 miles. Overdrive quit working.

    Does anyone know how to install a switch so I can make the overdrive work manually? It would help me diagnose the overdrive not working. If it works manually then it has to be something on the engine causing the problem. Is that what is called a mystery switch?
  2. H

    Engine/Transmission (1998.5 - 2002) 2000 Ram 2500 5.9 Diesel 279,000 miles. Overdrive quit working.

    Timd32, Thanks for the link and advice. I wil have to some research and check on voltages. May even look at a mystery switch if I can get it to work for a few months.
  3. H

    Engine/Transmission (1998.5 - 2002) 2000 Ram 2500 5.9 Diesel 279,000 miles. Overdrive quit working.

    I have a 2000 Ram 2500 4X4 5.0L diesel with 279,000 miles. Jasper replacement transmission installed when the factory transmission failed at 200,000 miles. I was coming back from a camping trip and stopped at a stoplight. When I started driving down the road the truck wouldn't shift into...
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