So my truck started making some pretty strange noises. When I accelerate at about 45-50mph it sounds like a coaches whistle, seriously sounds just like it.
When I decelerate it makes like a snapping noise and I start to get some vibrations. The motor seems to preform sluggish in the 30mph range but then if I rev above 2k it seems like boosters kick in. The noises sound like their coming from the back of the truck.
I crawled underneath and checked the u joints but I wasn't really sure what I was looking for. I also looked at the carrier bearing where the two piece driveshaft meets up and I could wiggle the driveshaft around inside it. I t looks like theres a huge bushing in there so I'm not sure if that's normal. Any advice...Thanks