72" (6') PMD/FSD Relocation Harness

72" (6') PMD/FSD Harness Extension for 6.5L GM Diesel, Black PMD

72" extension cable connects the original PMD/FSD electrical harness to a relocated PMD. The length of this extension permits a wide range of relocation options. This extension cable is compatible with all black PMD/FSD units; it will not work with gray PMDs due to a difference in the electrical connector.

Price: $19.99 USD

Shipping: FREE to anywhere in the U.S.A.

The PMD (Pump Mounted Driver), also referred to in some instances as the FSD (Fuel System Driver), is the Achilles heel of the 6.5L GM diesel. As such, relocation of the PMD is quite common and relocating options are plentiful. This 72" harness permits PMD relocation into a variety of locations.

The PMD/FSD is mounted to the driver side of the Stanadyne DS4 injection pump on turbocharged 6.5L GM diesels. A tremendous amount of heat is generated as it intensifies the signal from the powertrain control module to the fuel solenoid. During normal operation the flow of diesel is used as a coolant and, in theory prevents the module from overheating. However, underhood temperatures and the heat generated by the engine itself often prevent proper cooling and cause the PMD to fail prematurely. Additionally, a "heat soak" effect occurs when a hot engine is shutdown and the temperature of the PMD can increase considerably beyond its design temperature, further contributing to a shortened service life and intermittent operation.

As a result of the inherent problems with the PMD/FSD location, it is common for 6.5L GM diesel owners to move the PMD to a more ideal location where a cooling effect is encouraged and the heat soak effect is either reduced of eliminated. Common relocation placements include the front bumper, near the battery box, against the firewall, or similarly isolated locations. We highly suggest researching various relocation options and their inherent advantages/disadvantages before making a final decision.

Application Notes

• All turbocharged 6.5L GM diesels
• Fits black PMD/FSD only - separate connectors are required for gray units

Installation Notes

• Applying dielectric grease to the connector terminals is highly recommended
• A calibration resistor (not included) is required when replacing the PMD; this is typically purchased with the new PMD/FSD and is not included with this harness extension


Warranty: provides a 30 day warranty on this item against manufacturing defects. This warranty does not extend to any product, system, or component other than that purchased.

Shipping & Handling: The sale price of this item includes FREE SHIPPING to any address within the continental United States. Canadian buyers, please contact us so that we may provide you with a shipping quote prior to purchase - we ship to Canada at a discounted rate. We do not currently ship to any locations outside of the U.S. and Canada. Orders received by 7:00 am PST are processed and shipped same day, Mon - Fri. Orders received after 7:00 am PST are shipped the following business day. Items are shipped to your confirmed PayPal address.

Return Policy: Customer satisfaction is our highest priority. Unused, unopened products may be returned within 14 days, no questions asked. To initiate a return or for any additional customer service related questions, please contact us; you will receive a response in 1 to 2 business days.