Why does my GM 6.5 liter diesel engine not work?
Why does my GM 6.5 liter diesel engine not work? The main cause of driveability problem is the PMD / FSD Module of the electronic fuel injection system that mounts on the injector pump, it is the most common part to fail on the GM 6.5 Liter Diesel Engines. Jim's invention of the PDC/PMD Remote Package solved the PMD failure problem and is still offered here for sale today. Is the 6.5 diesel engine a defective engine? Pretty much, it is the nature of the beast. From 92-96, the 6.5 was (I'd say it was a disaster, but someone would...