How to Replace the PCM in a 1999 Dodge Caravan

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The Powertrain Control Module (PCM) in your 1999 Dodge Caravan is akin to the central processor unit of a computer. The PCM manages and regulates most of your Caravan's electrical systems, as well as the engine control system. The PCM in your Caravan is a single metal box that is roughly the size and shape of a car stereo. Replacement of your PCM is a fairly easy task that can be done at home with few tools in a short time.

Things You'll Need

  • Screwdriver
  • Socket set
  • Replacement PCM
  • Open the hood of your Dodge Caravan. Loosen and take off the negative battery cable.

  • Find your Caravan's PCM. It will be located on the driver's side of the engine block near the front of the wheel well.

  • Remove the retaining bolt that holds the wiring harness into place on your Caravan's PCM. Use a socket set to remove this bolt then disconnect the electric connections by hand. Once you have removed them, slip the old PCM out and place the new one in.

  • Reconnect the electrical connectors by hand then insert the retaining bolt. Tighten the bolt with your socket set.

  • Place the negative battery cable back on and tighten it with your socket set.

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References

  • "Dodge Caravan, Plymouth Voyager & Chrysler Town & Country: 1996 thru 2002 (Haynes Repair Manual) "; L. Alan Ladoux; 2002
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