1994 - 2002 GM OBS Trucks 6.5L Diesel Remote Mounting PMD Approaches (Chevy & GMC)

In this video we will go over an approach for remote mounting the pump mounted driver (PMD), aka fuel solenoid driver (FSD), while still preserving the warranty on a newly rebuilt 6.5L diesel engine fuel injection pump. Most OE rebuilders like ACDelco require that the PMD remain mounted in the stock position on the side of the injection pump, or the warranty is voided.
The truck illustrated is a 1999 Chevrolet K1500 Suburban LT, but the parts and procedure will be the same for any 1994 thru 2002 GM OBS C/K truck with the 6.5L diesel engine. Chevrolet, GMC, and Holden for Tahoe, Yukon, Blazer, Cheyenne, Silverado, Sierra, and Suburban across C1500, K1500, C2500, K2500, C3500, and K3500.
The eBay and Amazon search links below are paid links, for which I may be compensated and earn a commission, if you choose to buy the parts and tools shown in this video thru them:
Long PMD extension harness (both black & gray PMD types): ebay.us/yaX7ic or amzn.to/3VEyoDK
Short PMD extension harness (both black & gray PMD types): ebay.us/q8MPZT
GM 12345579 / ACDelco 10-4064 dielectric grease: ebay.us/mtyUeV or amzn.to/4cmYErx
GM 19209057 PMD module (black): ebay.us/frwf8w or amzn.to/45qToRz
Stanadyne 39405 PMD module (gray): ebay.us/cCBbSq or amzn.to/4clieEQ
Dorman 904-104XD PMD module (black): ebay.us/MFnIGd or amzn.to/3xfbHg2
PMD calibration resistors (both black and gray PMD types): ebay.us/swFQWs or amzn.to/4chxank
And if I've saved you some $$ here, consider some coins for the coffee tip-jar! ko-fi.com/drshock
1994 1995 1996 1997 1998 1999 2000 2001 2002
Chapters:
0:00 - Procedure overview
0:29 - Accessing the stock PMD wiring harness plug
3:20 - Installing the short run extension harnesses
13:13 - Installing the long run extension harness
14:44 - PMD differences
17:52 - Mounting the PMD to the heatsink
24:53 - Mounting the heatsink assembly to the front bumper
29:30 - Securing the harnesses
#drshock #obstruck #obstrucks
Disclaimer: DrShock, the alias for the human content creator for this KZbin channel, is not responsible for any damages, injuries, losses, or liabilities associated with any repairs, upgrades, or maintenance performed on yours, or any other, vehicle whatsoever. No warranty, express or implied, is made as to the accuracy or completeness of any information provided within this channel. Viewing and using the “as-is" information of this channel is totally at your own risk. Always wear personal protection equipment and follow appropriate vehicle manufacturer service manual guidelines with original manufacturer parts only when performing any repairs, upgrades, or maintenance upon any vehicle.

[@js1451]

Another smart great video!

[@techman1239]

Thanks for another great video! The main reason that the "FSD" keeps going out , is the design of the aluminum case. It does not matter how efficient of a heat sink that one installs on the unit ,.The main problem is that there is too much thermal resistance from the mounting point of the TO3 type power transistors , to the actual externally mounted heat sink. Not only are the power transistors mounted wrong, so are the emitter resistors and the TO202 style driver transistor that drives the main TO3 style power transistors. I think that if the TO3 transistors were remotely mounted to another heat sink, These units would last much longer. I have a unit ready to test that theory. I will share the results with you if you wish. Your comments, agree or disagree, are welcome.

[@DrShock]

Thanks, yeah I'd agree the TO3s are the thermal weak point. I've successfully rebuilt them from time to time kzbin.info/www/bejne/fX3NeIiieNt5jK8 to reduce their replacement costs, but would suspect when the one aftermarket supplier (Flight Systems) went thru their redesign, they likely could not find a replacement package that still performed to Stanadyne specification. Since Flight Systems were after being an GMSPO (GM service parts operations) approved supplier, that likely drove to keeping the TO3s.