i changed the driveshaft support mount as shown in the pic today and didn’t fix my vibration. i’m kind of giving up on it because sometimes it seems like it’s gone then sometimes it’s back. don’t really know what it could be at this point. only weird thing i noticed today was i was pushing up on the front part of the driveshaft kinda by the yoke and i could tell the trans was moving up and down a good bit. idk if they are supposed to be completely solid mounted? mine definitely is not if so. @MikeE75

 

I hear ya. If trighting up the bolts where it connects to the rear diff don’t help with the knocking and excessive vibration, I’m just gonna take it to the shop and say fix it. If they can’t fix it I’ll take it some where else.

 

Do you guys think it could possibly be a rear wheel bearing? i cannot feel the vibration in my driver seat but i can feel it in my passenger seat. at first i figured it was not the wheel bearing since the noise goes away at 55 and it hasnt gotten worse in the last couple of years. I’m not sure if wheel bearing noise can go away at higher speeds, i did not think so. I always thought it got worse the faster you go. anyways, how would i change them anyways? i’ve never changed wheel bearings with drum brakes. do i just take the drum off? anyways, thankful for answers and curious to see if anyone thinks it’s rear wheel bearings. @MikeE75 @Naeos_Valkarian

 

Hey have you had any luck with your issue? I still have mine even after swapping out the rear axle. But I did find something strange… So when I took my truck in for new injectors and trans. The shop couldn’t find anything vibration. Drove it for about a month or so and the vibration came back. So I jacked it up to check things and the vibration stopped. It was normal for about a day of driving and then started again. So it seems to me it has something to do with things not being aligned right, and when I Jack it up it kind of sets everything in the right spots maybe?? But not sure what it is that is out of alignment… any one have an ideas on what it could be?