2000 Chevy 3500 Won't stay running.
Have a 2000 Chevy HD 3500. Was driving it and it surged hard, and then speed up without touching the throtle. Pulled over, and it would just surge and die, surge and die. It didn't matter where the acc. pedal was. Got it home. Now it starts and dies. I have replaced the PMD last year. Was running fine. 99,000 miles on it. Was wondering if a dirty fuel filter could cause the problem? The injector pump was replaced once. Has anyone had a problem with the wiring harrness?