6.5 diesel wiring harness | eBay 1998 chevy 6.5 diesel wiring harness with pcm nv 4500 4x4 16216588. Pre-Owned. $400. or Best Offer CHEVY GMC 6 6.5 DIESEL FUEL INJECTION PUMP WIRING HARNESS BLACK PMD INJECTOR See more like this. Trucks 94-2005 GM Turbo 6 Diesel Fuel Injection Pump Gray PMD Wiring Harness. Brand New. 6.5 Injection Pump Harness | Fuel Pump Wiring Harness 6 Injection Pump Harness - For those really illusive stalling issues - Brand New fuel pump wiring harness for all GM 6.5 diesel trucks from 94 to 2003. This harness has sometimes been the cause of some of the more difficult to find driveability problems on the Chevy / GMC 6.5 diesel.