2003 chevy trailblazer_ls
Hey wrench heads, need some opinions before I start throwing parts at it. 03 Tb LS I6, 185000miles. The sound(rumble) starts at low speed and increases on acceleration and rumble stays consistent at 50 and above. No vibration in steering wheel, but rumble after 40mph feels like subs bumping your whole body Sound is coming from rear. Tires checked and properly inflated. Pinion seal, not leaking. Both u joints on driveshaft solid, no play in driveshaft or dents (metal driveshaft btw). Ok, heres whats got me stumped. It will be so loud in vehicle at 55mph, your almost yelling to talk to the wife, which can easily be mistaken by the little lady and put me in the doghouse, you married guys who arent in denial know what im talking about. Well, if you put it in neutral, ...:weird:..you can only hear the engine??? Now I know if im wrong I'll be corrected, but, its not the rear wheel bearings, cause they're always spinning, right? And in nuetral, the transmission stops output to driveshaft, but driveshaft still spins connected to rear, right? Correct me if I'm wrong, but looking for some ideas. Thanks in advance!