What did you do to your NNBS GMT900 Tahoe/Yukon Today?

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

RooTBeeRthe1st

Full Access Member
Joined
Jul 11, 2018
Posts
1,087
Reaction score
2,469
Well, pretty sure I just sheared the output shaft on the transfer case. No more rear drive. But putting it in four-wheel drive still works perfect driving off the front tires only. Also doesn't make any noise even when turning.

... don't remove too much torque management...

Going to revert a few settings back to stock (or Whipple) in the tune so I don't kill something in the front end before I can fix the current problem with the rear.

Time to go shopping I suppose.
Wonder if anyone has a drop in Atlas 2. That would be pretty sweet.
 

Rocket Man

Mark
Supporting Member
Joined
Dec 25, 2014
Posts
26,004
Reaction score
50,860
Location
Oregon
Well, pretty sure I just sheared the output shaft on the transfer case. No more rear drive. But putting it in four-wheel drive still works perfect driving off the front tires only. Also doesn't make any noise even when turning.

... don't remove too much torque management...

Going to revert a few settings back to stock (or Whipple) in the tune so I don't kill something in the front end before I can fix the current problem with the rear.

Time to go shopping I suppose.
Wonder if anyone has a drop in Atlas 2. That would be pretty sweet.
Differential maybe.
 

RooTBeeRthe1st

Full Access Member
Joined
Jul 11, 2018
Posts
1,087
Reaction score
2,469
Differential maybe.
I just figured the diff would have made a lot more noise, like metal getting bashed around inside the pumpkin.



Definitely the diff.






Didn't like the hard & fast 1>2 shifts.
Right rear let out a small bark, then a not very loud metal "ping", but everything still drove fine and I didn't see any fluids leaking.
Drove real nice for a mile or so and then on decell, another "ping".
Drove another mile or so and then accelerated maybe half throttle from a light, and as soon as it tried to go to second, another "ping" and then engine tried to rev straight to the Moon. Barely even made a sound when it let go.
 

Doubeleive

Wes
Supporting Member
Joined
Nov 7, 2017
Posts
26,149
Reaction score
39,143
Location
Stockton, Ca.
I just figured the diff would have made a lot more noise, like metal getting bashed around inside the pumpkin.



Definitely the diff.






Didn't like the hard & fast 1>2 shifts.
Right rear let out a small bark, then a not very loud metal "ping", but everything still drove fine and I didn't see any fluids leaking.
Drove real nice for a mile or so and then on decell, another "ping".
Drove another mile or so and then accelerated maybe half throttle from a light, and as soon as it tried to go to second, another "ping" and then engine tried to rev straight to the Moon. Barely even made a sound when it let go.
time for a eaton detroit, if you can break one of those I give you kudus, most I ever did was wear the bearings out of one, took a couple years of beating on it, new bearings and she was back on the road.
 

Forum statistics

Threads
132,236
Posts
1,864,465
Members
96,783
Latest member
ddk1993
Top