6.5dooley
10-06-2005, 18:10
I used to visit this forum a couple years ago, but haven't followed the trends lately. I have a '99 GMC 4x4 Crew dually with the 6.5 TD and 4L80-E trans. Only mods are a Banks intake and exhaust kit, and just turned 101K miles. No major problems except the historic ones--overheating under long, heavy pulls, and not as much power as I'd like. I have my own ideas about the overheating, but it's never been enough of an issue to have to do something. I'm still on the original pump driver and injector pump, original injectors, original turbo, second set of glow plugs, 3rd alternator and 2nd water pump. My questions are these: What might I expect in the next 9500 miles (time until warranty on injector pump is out) and when it eventually goes south, should I replace with same, or is there a better option available? Is there a "chip" still available for the 6.5, does it still require changing out the entire computer? I like this truck, will have to keep it anyway, although I'd love a D-Max. It runs great, I get about 12-13 mpg and it will make about 13 lbs boost.