Bad rear or tranny??

[Ben Solo]

Hey there, I gotta 04 Tahoe and yesterday I went to reverse and it went about a foot then just abruptly stopped. Felt like I hit something, but no. I put it in drive and it went a few feet with little grinding noise.
But I managed to get home. Very ruff ride. Bit as o right now, it seems like gears maybe loct up on rear end? Not sure but I'm bout to drain and fill rear and transfer case.
Any thoughts? I'd really, really appreciate it, bro. Lmk

 

[OR VietVet]

If the rear gears are damaged, you will see that when you remove the cover to drain. Do that first. I am not expecting that though because if was damaged enough to lock up and cause you to stop while in reverse, I would assume that it would do the same driving home in drive. Likely something in the trans but it is just a guess. Need to look at trans fluid and rear diff and supply pics of fluid and inside of diff.

 

[rockola1971]

Could be the transfer case also. So check its fluid level and maybe even drain and check for metal.

 

[corvette744]

Hey there, I gotta 04 Tahoe and yesterday I went to reverse and it went about a foot then just abruptly stopped. Felt like I hit something, but no. I put it in drive and it went a few feet with little grinding noise.
But I managed to get home. Very ruff ride. Bit as o right now, it seems like gears maybe loct up on rear end? Not sure but I'm bout to drain and fill rear and transfer case.
Any thoughts? I'd really, really appreciate it, bro. Lmk

I would get all 4 wheels off the ground-jack stands.put it in 4 wd and find the noise before i turned a wrench.With noises like that your tearing something apart just find the noise first.Also something simple could be the parking brake shoes-ask me how i know about that-almost left me stranded 50 miles from home towing a boat.

 

[Ben Solo]

I would get all 4 wheels off the ground-jack stands.put it in 4 wd and find the noise before i turned a wrench.With noises like that your tearing something apart just find the noise first.Also something simple could be the parking brake shoes-ask me how i know about that-almost left me stranded 50 miles from home towing a boat.

Found out the rear driver side caliper was missing the bottom bolt somehow. So when I'd reversed it would flip up and make the wheel stop completely. But when I go forward, it'd go bacc in place. So I just replaced the bolt and all done. That was too easy, so of course, something else messes up! But yeah.. Thanx!

 

[MassHoe04]

Talk about a lucky break! Love a cheap and easy fix! I have not followed this particular piece of advice myself, after recently purchased and 04 Z71, but you probably still want to do fluid changes in the diff and transfer case at some point...
Mine was well cared for by 2-owners and they kept up on mechanicals. I'll get to it, but not in a rush. Winter is here. Probably not until spring.