GV uses a gear inside called a freewheeling gear or some call it a sprag. Anyway, out of the blue my gear broke into 3 pieces. Driving along with GV on and it just dropped out. No warning, no noise just boom done. (happens a lot)
I went through mountainous battles to convince GV to sell me a new gear. They finally agreed and he told me it will break again. I said, okay sell me the rest of the parts so it won't break again. They refused.
Here we are 10 years later (not much use in there) and I found a chunk of steel while doing oil change. tore it down and that gear is missing a tooth and cracked.
Good INFO thread for gv.
I bought mine used and from day one it was a battle with GV to get anything unless you were spending a bunch of cash with them. I had problems with the old school electronics so they sold me the complete latest and greatest electronics. It worked for a while then started creating problems where it would not allow the TC to engage. Tranny shop after shop said the trans is fine. Said engine PCM was fine. Wiring was fine. Went through so many headaches with just that one problem. It was the GV control module.
It worked best just run off a toggle switch. I built a small timing circuit that would disengage the TC for 3 seconds when you switch the GV on. Helps take the shock load off.
Had other problems from time to time. failed solenoid. Have a hard time keeping a decent bushing in the tail housing. The thing is high maintenance.
Don't get me wrong it is great when it is working, but it is not working more often than working. I am just tired of fixing it.
It had gotten so bad I had a spare tail housing and different driveshaft sitting around so I could pull it GV off in about 30 minutes.
Maybe with a brand new one you could get some dependable years out of it, but that cost was never worth it to me and I am not having much luck with the used one.
Had it on for 100k miles now. I would be surprised if it worked or was engaged for 15k of that.
If I had it to do over, I would still throw it on and try it, but when it first broke I should have pulled it and sent it to GV and spent the $$ on a reman, or just sold it and quit there.