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700R4 all gears disappeared?

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8.7K views 10 replies 5 participants last post by  Throwjav  
#1 ·
The truck was parked and I lost all the gears in my 700r4. I had it towed and when I got home it worked again. I then drove half way around the block and then they disappeared again. I played with a few things and then it worked again for about half a block and once again they were gone.
I proceeded to mess with shifting it one more time and the gears appeared long enough for me to get home then once again disappeared.
When I put in park it makes a grinding noise.
I have checked all over and have no idea what is wrong with this transmission. Any ideas?
 
#7 ·
Throwjav said:
I have already opened it up. The filter looked alright and the fluid was a little dark but not bad, I think.

no sure on what to look for. The trans has always been this mistery black hole of the unknown for me.

What would make it loose park also??
Sounds like the shift linkage or the bracket that connect to the shift shaft is loose.

Park is a mechanical lock, not hydraulic.
 
#8 ·
Transfer Case??

Would it be possible that the transfer case has something wrong with it??

I was draining the fluid in the transfer case and found two white plastic things in the bottom, plus there was some blue thing in there.

My thought is that if there is no pressure coming from the rear tires that the transmission would just be spinning, thus the grinding when I try to put it in park.

If Yes, is it hard to rebuild a transfer case?