Last week I posted that I thought I might have lost the trans in the TBSS. I put it on 4 ramps today and had a buddy watch the drive shafts in gear. The front drive shaft spins as soon as it is put in gear and does not stop until put back in to park. It is grinding like the pinion in the dif is stripped.

I am not sure how the AWD system transfers power between front and rear. So I am leaning towards the front dif being gone.

Being an AWD, would I have any movement of the vehicle if the front dif is broke?

Are there any write-ups on removing the front dif?

Any help would be greatly appreciated.


Shaun

 

Did we ever determine exactly what transfer case is in that? Once we know exactly what case it is then we can figure out what its properties are. Personally I would think it would try to put power to the rear but...... not sure.

 

This is probably a good read for you LIL SS.....

Failure of Splines in Front Axle Assembly - TBSSOWNERS.com Forums - The #1 TrailblazerSS Dedicated Owners Forum

It appears you are in dead in the water if the the front shaft just spins. So your t-case and trans are probably just fine.

 

Wow, that was a interesting read. Thanks for the info 1994Vmax

 

Should be NVG 120 under the RPO NR9

Uses a T3 Torsen unit instead of a viscous coupler.

Torsen T3 Unit - Info From Torsen Techs - Page 2 - TBSSOWNERS.com Forums - The #1 TrailblazerSS Dedicated Owners Forum

 

Thanks.. Now if I could only read more than just page 1.. Just registered there but looks like I need to wait a little while to get full access

 

There is lots of helpful info specific to the TBSS on that site so I think you will enjoy reading up on some of the stuff.

 

24hrs and the mods still haven't approved me. Can't even see the first page of the thread now.. Going by super73 over there if anyone felt like sending an e-mail to a moderator for me. Rainy season is coming here and i need to get this back on the road for the wife. Thanks in advance.

 

Sent a PM for you.

 

Not completely sure about the SS trucks, but all the others had an intermediate shaft assembly on the right side that sheared on a regular basis. Easy fix, take the right front half-shaft out and the housing comes out in one piece with 3 or 4 bolts. Rebuild it on your garage bench, the dealer should keep parts for them since it is a common repair.