So if someone has any info I need help! I was driving my H3 down the highway and all of the sudden I lost power to the wheels and and my engine reved up like I was in neutral and was pushing the gas. I pulled over and put it in park and when I did it made a loud grinding noise and idled down. I turned it off and had it towed home. So Later that day when I got back home I cranked it and when I put it in drive and it just revs up with no power to the wheels and again made a loud grinding noise when I put it in park. I tried it one more time and before I put it in drive I switched to 4 WD High lock then I put it in drive and could drive it in my yard no problem. Does anyone know what this might be?

 

Front diff Ring and pinion, half shaft, intermediate shaft, front prop shaft.

Have you crawled under it to assess is any damage or fluid leaking?

 

Miles would be important to know when asking any question.

Your Transmission or transfer case is cooked and you need a rebuild or replacement.

 

Check fluids and look for metallic flakes.
Pull the trans dipstick and wipe on a white paper towel and post picture.
After that,drain the fluid at the front differential and post a picture:

 

I will tomorrow thank you!

 

233k miles

 

Sounds like a transfer case issue.

 

Trans definitely needs flushed, however that is not your problem. Did you drain the fluid in the front diff and transfer case?

 

I’ll be able to do that tomorrow morning. I had a lot on my plate today I had to take care of. I will post pics of what comes out. Thanks again!

 

Could b ewrong I suppose, but my money is on the transfer case encoder motor. That's the exact symptoms I have seen before with my wife's Tahoe. Hint, OEM encoder motor only, or you will be replacing it again.