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

[Bear77]

Maybe it's the angle, but the new rotors look smaller.

Not the angle, to me it looks smaller too. And another pic of the caliper. Seems like the caliper seized up and blew the piston...

What’s left of the piston...

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[TheAutumnWind]

Here are the pics

Rotor...

Caliper...

Originally, I thought I had a caliper in the front that was dragging, and I think I still do. So, ended up doing the NNBS brake upgrade while I was at it. But, turns out it was the one in the rear. Never did the idiot check on the brakes so partly my fault...still need to do the parking brake, but I’ll get a better look next week.


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Good grief. How did you drive it like that?

 

[Doubeleive]

the horrible metal on metal screeching noise never made you think maybe something was wrong? lol or was it like that when you bought it?

 

[Tonyrodz]

Not the angle, to me it looks smaller too. And another pic of the caliper. Seems like the caliper seized up and blew the piston...

What’s left of the piston...

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DAMN!!

 

[Bear77]

Good grief. How did you drive it like that?

Very carefully!! Lol...happened while on my way home from work. Had no clue brakes were in that condition. Was too late to go to parts store that night. Then had to be back to work early in the morning so going to parts the next morning when they opened was out of the question. Couldn’t take the wife’s car because it was going to the stealership Wednesday.


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[wjburken]

Here are the pics

Rotor...

Caliper...

Originally, I thought I had a caliper in the front that was dragging, and I think I still do. So, ended up doing the NNBS brake upgrade while I was at it. But, turns out it was the one in the rear. Never did the idiot check on the brakes so partly my fault...still need to do the parking brake, but I’ll get a better look next week.


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Well - Now all you need is a playing card or two to clip to your caliper and you can get a really cool sound like you did on your bike as a kid!

 

[Danny3737]

I bet that thing was glowing red right before it separated.

Here are the side by side pics of rear rotors

New straight out the box...

Side shot of new rotor...

Side by side...

Back to back...

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[Bear77]

the horrible metal on metal screeching noise never made you think maybe something was wrong? lol or was it like that when you bought it?

Actually, I did hear the brakes make that squeaky sound that lets you know it’s time for them to be changed. But my thought was that I had a little more time. But then I started to hear like a grinding metal to metal sound that was making the truck feel like the front end was about to fall off or something. And that’s what made me start thinking it was actually the front brakes. But then, after changing those over the weekend between off hours, I was still hearing the noise but the grinding sound wasn’t as bad anymore. Then this happened! I was actually waiting to change them next week after getting to moms house for the week of Thanksgiving! Time schedule got moved up really quickly! Doing the drivers side right now since I have some time before going in today.


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[Bear77]

Well - Now all you need is a playing card or two to clip to your caliper and you can get a really cool sound like you did on your bike as a kid!

Lmao!! Wonder if that would actually work!


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[Bear77]

I bet that thing was glowing red right before it separated.

I kept checking the front and rear wheels to see if that was actually happening, but no. At least, not that I could see.

Will post more pics when I get the job done!


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[NoReverseYukon]

Bear77 - You're going to hang that on the wall of your garage, aren't you ?

 

[Danny3737]

The piston came out right after the rotor split, because the brake pad had nothing to press against. Because of the heat generated, you were really lucky that the leaking brake fluid didn’t catch fire. Thank God for dual reservoir master cylinders. Back in the “old days” you wouldn’t have stopped until pulled the emergency brake or hit something.

Not the angle, to me it looks smaller too. And another pic of the caliper. Seems like the caliper seized up and blew the piston...

What’s left of the piston...

Sent from my iPhone using Tapatalk

 

[wjburken]

The piston came out right after the rotor split, because the brake pad had nothing to press against. Because of the heat generated, you were really lucky that the leaking brake fluid didn’t catch fire. Thank God for dual reservoir master cylinders. Back in the “old days” you wouldn’t have stopped until pulled the emergency brake or hit something.

That was not a rapid failure of the rotor. Here is what it looked like right before a fin pulled the piston out.

 

[Danny3737]

wow, just wow! I’m surprised it didn’t blowout both pads. Just when you think you’ve seen it all.

That was not a rapid failure of the rotor. Here is what it looked like right before a fin pulled the piston out.

 

[Danny3737]

Just a thought, but I wonder if it got hot enough to compromise the wheel bearing

 

[Bear77]

Bear77 - You're going to hang that on the wall of your garage, aren't you ?

Will save it for when I do get one! Lol

The piston came out right after the rotor split, because the brake pad had nothing to press against. Because of the heat generated, you were really lucky that the leaking brake fluid didn’t catch fire. Thank God for dual reservoir master cylinders. Back in the “old days” you wouldn’t have stopped until pulled the emergency brake or hit something.

Actually the backside brake pad or what was left of it, was still there. And no emergency brakes, those need to get done as well.

Just a thought, but I wonder if it got hot enough to compromise the wheel bearing

Didn’t even think about that...


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[Sam Harris]

Been getting the service 4WD message pretty consistently lately, and interestingly, the tcase seems to start out in Auto 4WD rather than 2WD where I leave it. It goes away quickly, usually right after turning off, and then pops up again a day or two later.

Finally caught it with the tech 2, and I have a C0327 code, so figure I need to replace the actuator motor, or possibly the TCCM.

Also getting the loss of comms message, and it won’t actually read data from the tcase as well. Here’s a video when I try to read the tcase data:

 

[Doubeleive]

Just a thought, but I wonder if it got hot enough to compromise the wheel bearing

probably not those rear bearing are pretty hardy, I beat the crap out of my 00 for nearly 300k before the rear bearings started humming at me

 

[Sam Harris]

Decided to clean up the grounds under the driver seat a little better. They weren’t terrible, but they’re a lot better now, and coated with dielectric grease.

 

[Doubeleive]

Been getting the service 4WD message pretty consistently lately, and interestingly, the tcase seems to start out in Auto 4WD rather than 2WD where I leave it. It goes away quickly, usually right after turning off, and then pops up again a day or two later.

Finally caught it with the tech 2, and I have a C0327 code, so figure I need to replace the actuator motor, or possibly the TCCM.

Also getting the loss of comms message, and it won’t actually read data from the tcase as well. Here’s a video when I try to read the tcase data:

my guess would be just the encoder motor I think they run about $160 for a REFURB