What did you do to your NBS GMT800 Tahoe/Yukon Today?

[iamdub]

That's exactly what it's doing.
Do you mean the ratio?

The videos didn't show up for me until just now. The only odd noise I hear sounds like that exhaust leak.

With it on jack stands, you can lightly apply the brake until the wheels stop. While holding the brake, lightly apply throttle to get one side to break loose and spin. It's usually the right side that will spin. Maintain steady brake and throttle pedal pressure and listen for noises. Repeat in reverse.

 

[Tonyrodz]

No, the diff type. Not the gear ratio. I'm sure you have the factory LSD, which, I believe would be the Gov-Lock.

How could I tell?

 

[wjburken]

How could I tell?

Do you have G80 as an RPO code?

 

[Tonyrodz]

Do you have G80 as an RPO code?

Unbelievably I don't.

 

[Tonyrodz]

This is what it's doing as I'm power breaking it--applying throttle.

Making the noise everytime I'm going forward to reverse/reverse to forward then powerbraking it.

 

[Tonyrodz]

 

[Walchit]

I think Tonyrodz and I have about the same kind of luck. My dad always says " if it weren't for bad luck, I wouldn't have any at all!"

 

[Tonyrodz]

This is what it's doing as I'm power breaking it--applying throttle.

Making the noise everytime I'm going forward to reverse/reverse to forward then powerbraking it.

Could it possibly be the transfer case making that noise? Even tho the prop shaft for the 4wd isn't connected? It kind of sounds like that's where the noise might be coming from--from the front. I originally thought it was the trans.

 

[Fless]

Unbelievably I don't. View attachment 367023

Weird that none of those RPO codes seem to indicate the rear diff. The VIN decoder (for @Tonyrodz) lists it as a Semi-Floating rear diff, same as what my RPO G80 shows up as.

VIN Decoder - Chevrolet Forum - Chevy Enthusiasts Forums

Chevrolet VIN Decoder - Decode your vehicle identification number

chevroletforum.com

 

[ratled]

Unbelievably I don't. View attachment 367023

Try running the VIN through HERE it may tell you... at least it's free