Hey guys thanks for looking and or helping me out.

Problem I'm having is I had a rear main oil seal leak and I attempted to replace it. Pull the t-case and tranny and got here done. All good there.

When I went to install everything back minus the drive shafts becuase the truck is on a ramp.
I filled the t-case up and tranny with fluid.
Started the car and started up check for leaks nothing. Shifted the tranny and everything sounded good until I went into patk. Now I get a grind sound. Rev to park. Grinds for like 2-3 secs.

I looked it up and maybe the t-case is stuck in gear or that the engine is just free spining to much that it grinds becuase the drive shafts are not hooked up.

Need some advice before I have to tackle this problem and remove the t-case all over again. Tranny was fine before I pulled it out today.

It's on a 2000 GMC Yukon xl 5.3 4x4

 

You have nothing to stop the transmission with no drive shafts in put your shafts back in and youll be fine.... It is the parking pawl ratcheting when it engages that youre hearing

 

Yep that did it . thanks for the input. I had feeling but just wanted confirm it.

 

No problem!!