bucket772

That's kinda why I wanted them to replace the shafts. I have a sinking feeling that unless its a differential out of a different lot that didn't have problems, then I will be screwed again.

My dealer said they were gonna order a new axle shaft and repair it. Then got a call yesterday and they said they were going to replace the entire differential. I'm wondering if they figured the problem out or if it just easier to replace the whole unit. Question is, would it be better to have one fixed with the proper shaft or roll the dice on a new diff that has the same issues. 2300 miles. Will I have to wait 500-1000 miles for it to start? Who knows. This is frustrating.

Initially I thought it was from the front. So did the tech. Closer inspection and he was able to find it in the back.

Me. 2020 build date 8/19. Same symptoms. Same SU4 axle. Goes back in Tuesday next week.

Not entirely true. My 2020 has 2260 miles on it. Built in 8/19. Picked it up in the beginning of December. I don't drive it that much, which is to say a few miles a day maybe to the gym and back, no really long trips. Last week, I was driving around all morning and started hearing a thunking sound. So while I had the radio off listening to that, I heard the dreaded jingle. Jumped on here and they symptoms are exactly the same. Starts around 15-20 miles, only in 2wd, goes away in 4x4. It does have the SU4 axle. Anyway, took it in and first they didn't hear it. Went back the next day while it was warm and took the tech for a ride. He heard it. It goes back in Tuesday. As far as the thunking noise, it sounded like the front but closer inspection showed it was coming from the rear leaf springs. They said installed "Rear Leaf Spring Insert Replacement and Re-torque u-blots as per bulletin"

Almost certainly that. Just don't know if it was a loose fitting, split hose, no clamp, etc. PIssed that it is all over the engine bay and underside of the truck. Anyone want to put some action down on whether it gets properly cleaned? Not to mention they said that warranty people don't always cover 100% of the tow bill. That's gonna be a fun argument if it happens.

2020 1500 RST 5.3L 1700 miles So after a few errands this morning, I hit the highway. Merged on the the Atlantic City Expressway and checked the mirror. Lots of smoke. Other driver pulled up and said I was dumping fluid. Pulled off to the shoulder and the fluid was POURING out of the front. Looked like somewhere up by the radiator. I wasn't looking forward to crawling around the truck on a 75+MPH highway. Towed it back and waiting to hear from the dealer. So much junk up there that I couldn't tell where is was coming from and didn't know how much I lost to start it up and find out. I'll report back in a few days when I hear what happened. Just wanted to get a little warning out there