I’ve finally had time to get my 2500 back together and on the road, and I’m hearing a weird rattle noise I need help diagnosing. I don’t think the truck rattled when I brought it home a few months ago, but it ran so poorly on the drive home I may not have noticed.
It only happens in reverse and 1st under moderate load. If I baby it or floor it, there’s no rattle. I can also lug it in all the other gears and hear no rattle. I initially thought it was something in the front drive (fan clutch?) or the exhaust vibrating against something, but haven’t found any culprit. My buddy thinks the sound is coming from the TC dust cover, but I double-checked tightness on those bolts. I’m not feeling anything, if that makes sense…just hearing the sound. Any suggestions?
It only happens in reverse and 1st under moderate load. If I baby it or floor it, there’s no rattle. I can also lug it in all the other gears and hear no rattle. I initially thought it was something in the front drive (fan clutch?) or the exhaust vibrating against something, but haven’t found any culprit. My buddy thinks the sound is coming from the TC dust cover, but I double-checked tightness on those bolts. I’m not feeling anything, if that makes sense…just hearing the sound. Any suggestions?