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How to Replace the Voltage Regulator in a Dodge Durango

by Contributor

All Dodge Durango SUVs come with a Powertrain Control Module that contains the voltage regulator. If any problems develop with the voltage regulator, it cannot be replace by itself. The entire Powertrain module must be replaced.

Step 1

Record the Durango's vehicle identification number and mileage before beginning. You must have these to program into the new Powertrain Control Module.

Step 2

Make sure the ignition switch is turned off. Disconnect the cable from the negative battery terminal and set it somewhere where it can't accidentally reconnect.

Step 3

Raise the hood and locate the Powertrain Control Module. It should be near the right fender in the engine compartment.

Step 4

Remove the cover concealing the electrical connectors. Carefully unplug all the 32-way connectors from the Powertrain Control Module. There are normally three connectors.

Step 5

Remove the Powertrain Control Module from the Durango by disconnecting the mounting bolts. Install the replacement module (with a good voltage regulator) onto the truck.

Step 6

Install all the 32-way connectors to the new Powertrain module. Replace the cover over all the electrical connectors. Connect the negative battery cable.

Use a scan tool to program the vehicle identification number and original mileage into the Powertrain Control Module. You must do this to avoid a diagnostic trouble code from appearing.


  • Inspect the 32-way connectors for any corrosion or damage before connecting the replacement Powertrain module. Repair or replace them if necessary.

Items you will need

  • Powertrain Control Module
  • Wrench
  • Screwdriver
  • Scan tool

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