My truck started pulling meeaannn right if the hubs are locked and the transfer is in 4hi or 4lo. It's a new issue, no gear mismatches or anything. The CV's look fine, but that's just a visual inspection under the truck.

The passenger side front differential mount looks a little jacked. There's ~1/8-1/4" separation visible. I'm gonna replace it, but I don't know if that could be causing the pulling problem.

Any thoughts?

Also, on rough road, I can hear a little bit of clunking. I assume it's the differential moving on the separated mount.

 

uhhhh, not even sure if this would cause that or not, but could be your 4wd hub is locked up on the right side, causing wheel drag on that side? and in 2wd it just freewheels cuz the hub isn't engaged? just a complete guess.

 

bad cv, mine does it on the drivers side, and i replaced my spindle not too long ago cuz it was all jacked up and noticed its EXTREMELY hard to move the outer joint around...my guess, but mine clicks when its engaged...

 

No clicks from the CV, and it still tracks fine with the hubs locked and the shifter in 2HI.

I took it through snow, ice and dirt yesterday. When the road is bad and a lot of slipping is going on, it seems to track like it should. But when I hit a smooth, dry patch, it pulls really hard right again.

I tried to take out the mount bolt from the front diff today to check the rubber bushing, but it wouldn't budge with a breaker bar. I need friends with impact tools.