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

[Rocket Man]

Well I had a tire hop at highway speeds I assumed was my old tires but with the new tires I still have it. When the gas tank is full and tire pressures cold it is not as bad. I'm gonna put it on jacks an take a look for anything obvious.

Does it happen at a certain speed?

 

[latvius]

Does it happen at a certain speed?

Kinda, at 50 I can barely feel it but 65-70 is worst at 75 it's almost gone. It's like I feel the "hop" for about 30 sec then is goes smooth for about 30 sec and repeats. I dont really feel it in the steering wheel it's more like the whole truck

They did a front end alignment so I ASSume nothing steering is majorly worn. I also thought driveshaft but I let off the gas and back on to see if I could hear any thunks but notta.

Then I started thinking shocks since I put them on with the tires about 40-43k ago...

 

[latvius]

Kinda, at 50 I can barely feel it but 65-70 is worst at 75 it's almost gone. It's like I feel the "hop" for about 30 sec then is goes smooth for about 30 sec and repeats. I dont really feel it in the steering wheel it's more like the whole truck

They did a front end alignment so I ASSume nothing steering is majorly worn. I also thought driveshaft but I let off the gas and back on to see if I could hear any thunks but notta.

Then I started thinking shocks since I put them on with the tires about 40-43k ago...

Jacked up the front, no play in the rear driveshft at all. Steering seems ok to me, the old tires had a perfect wear pattern. The brake rotors look glazed, I spun the front wheels by hand and all was smooth, so maybe the rear ones are warped? Gonna change the oil then jack up the rear and spin the wheels by hand.

 

[Rocket Man]

Kinda, at 50 I can barely feel it but 65-70 is worst at 75 it's almost gone. It's like I feel the "hop" for about 30 sec then is goes smooth for about 30 sec and repeats. I dont really feel it in the steering wheel it's more like the whole truck

They did a front end alignment so I ASSume nothing steering is majorly worn. I also thought driveshaft but I let off the gas and back on to see if I could hear any thunks but notta.

Then I started thinking shocks since I put them on with the tires about 40-43k ago...

That sounds like an out of round or out of balance tire but since it’s happened with 2 sets of tires I would suspect a bent rim.

 

[latvius]

That sounds like an out of round or out of balance tire but since it’s happened with 2 sets of tires I would suspect a bent rim.

I followed this guys video on how to check for bent rims but I don't see anything wrong. I took the wheels off and eliminated the wheel spacers, figured less stuff to troubleshoot. I have to take a trip on the highway tomorrow will see if anything changed.

 

[Rocket Man]

I followed this guys video on how to check for bent rims but I don't see anything wrong. I took the wheels off and eliminated the wheel spacers, figured less stuff to troubleshoot. I have to take a trip on the highway tomorrow will see if anything changed.

I would have a good tire shop do a road force balance and check for a bent rim or out of round tire. Tell them what’s going on. There’s nothing like spinning them up to speed on a machine. I doubt you’ll be able to see a minor issue doing it like that. I had a shaking issue at 65-70 and the shop that sold me the 26” wheels balanced them 3 times but it was still there. I went to another shop and one of the tires was way out of tolerance as far as roundness plus the first shop must have gotten frustrated trying to balance it because it wasn’t. I ended up putting that tire on the rear after the hood shop balanced it and the shaking was almost nonexistent. I sold the rims soon after and went smaller with a different brand of tires.

 

[latvius]

I would have a good tire shop do a road force balance and check for a bent rim or out of round tire. Tell them what’s going on. There’s nothing like spinning them up to speed on a machine. I doubt you’ll be able to see a minor issue doing it like that. I had a shaking issue at 65-70 and the shop that sold me the 26” wheels balanced them 3 times but it was still there. I went to another shop and one of the tires was way out of tolerance as far as roundness plus the first shop must have gotten frustrated trying to balance it because it wasn’t. I ended up putting that tire on the rear after the hood shop balanced it and the shaking was almost nonexistent. I sold the rims soon after and went smaller with a different brand of tires.

Well I have my Denali with the same size and make tires, I was thinking I could swap some tires and see if the problem goes away so it if is a rim I can narrow it down to the exact one.

 

[Rocket Man]

Well I have my Denali with the same size and make tires, I was thinking I could swap some tires and see if the problem goes away so it if is a rim I can narrow it down to the exact one.

Great idea. Keep in mind the tires on an AWD have to be pretty much the exact same diameter or you’ll damage the transfer case so if one set is worn more than the other it would be safest to swap all 4. Then if you know you have a bad tire or rim, have a tire shop figure out which one out of the four.

 

[ivin74]

The clock is actually slightly larger than the power outlet in some places. The wood trim from the original Escalade bezel is actually removable if you take a Dremel to the backside and cut out the plastic tabs that hold it in. Then I just painted it to match the Denali gray console trim. Since I wanted to keep the ash gray wood trim from the Denali console, I had to then Dremel out the tabs that hold the OEM gray bezel that surrounds the CD changer, storage cubby, and power outlet. Then glue the pained Escalade trim onto the Denali bezel. Sounds more complicated than it is honestly now that I’ve done it. Also, power outlet where the clock goes is part of the Denali bezel so have to cut that out too.

Got it, my next mod. Thanks

 

[Sam Harris]

Got the Hellwig F & R sway bars installed today.!

Also the center rear brake line I had made, to replace the faulty one that was in the kit. So glad, now it’s all stainless!

Also replaced the super short bumpstops with slightly taller ones. Now they contact the jounce stops, as they’re supposed to. [emoji106]

I didn’t have a chance to take her on any canyon carving today [emoji57].. but just during the short drive home, I could definitely feel a significant difference! She feels completely planted now!

 

[Tonyrodz]

Got the Hellwig F & R sway bars installed today.!

Also the center rear brake line I had made, to replace the faulty one that was in the kit. So glad, now it’s all stainless!

Also replaced the super short bumpstops with slightly taller ones. Now they contact the jounce stops, as they’re supposed to. [emoji106]

I didn’t have a chance to take her on any canyon carving today [emoji57].. but just during the short drive home, I could definitely feel a significant difference! She feels completely planted now!

Nice. I have the rear coming. I wonder how hard it'll be to do it on the ground.

 

[Sam Harris]

Nice. I have the rear coming. I wonder how hard it'll be to do it on the ground.

It’s not too bad really. You have to have it on the ground to determine how long to make the end links anyway.

 

[Rocket Man]

Got the Hellwig F & R sway bars installed today.!

Also the center rear brake line I had made, to replace the faulty one that was in the kit. So glad, now it’s all stainless!

Also replaced the super short bumpstops with slightly taller ones. Now they contact the jounce stops, as they’re supposed to. [emoji106]

I didn’t have a chance to take her on any canyon carving today [emoji57].. but just during the short drive home, I could definitely feel a significant difference! She feels completely planted now!

Nice! Did you do it yourself Sam or did you have help? That’s a bunch of work!

 

[clandr1]

Got the Hellwig F & R sway bars installed today.!

Also the center rear brake line I had made, to replace the faulty one that was in the kit. So glad, now it’s all stainless!

Also replaced the super short bumpstops with slightly taller ones. Now they contact the jounce stops, as they’re supposed to. [emoji106]

I didn’t have a chance to take her on any canyon carving today [emoji57].. but just during the short drive home, I could definitely feel a significant difference! She feels completely planted now!

I am *patiently* awaiting video of you driving this thing like a racecar

 

[treehan77]

I’m waiting on my Goodridge 14175 SS brake line kit myself and front rotors. Why is every time I order a bunch of stuff, one or two things takes forever! Just doing all new rotors/pads, but the gmt900 calipers/rotors up front. Skipping this new new brake mod lol

 

[blueinkd]

It’s not too bad really. You have to have it on the ground to determine how long to make the end links anyway.

So what's the verdict and impression on the ride control after the installation??

 

[Sam Harris]

Nice! Did you do it yourself Sam or did you have help? That’s a bunch of work!

No way. My back is all kinds of fooked this last couple weeks. I could barely handle putting the shit in the back! I did help out, but it was painful af, and I didn’t really do shit.

 

[Sam Harris]

So what's the verdict and impression on the ride control after the installation??

Oh man...! It is awesome! I didn’t have much time to do anything yesterday, what with parental / husband-type obligations and such, but today, I took her for a ride down a road nearby, called “Riverdale”. Folks who live around here know the road, as it’s supposedly haunted, but I’ve always enjoyed the curves. Though, I haven’t really driven quickly on this road with the Yukon, I used to drive 80+ on it in my Civic.

So I decided to try it out today. I should have done a before / after, but hadn’t thought about it.

But I can say, she is PLANTED to the road!! I could have gone much faster, but there was some traffic, and like I said, haven’t driven it in years, and never (quickly) with this truck.

Nonetheless, I was able to hit some corners at 65-70+ and not even break a sweat. If there had been less traffic, I would have tried a bit harder, but I was seriously floored with how well she corners now! Also keep in mind, I’m at stock height rear, with the front cranked, to level.

I have a dash cam video, but it’s pretty long, and annoyingly, you can hear my dumb ass bitching about other drivers.. lol! Lmk if you really want to see it, and I’ll share.

 

[Rocket Man]

No way. My back is all kinds of fooked this last couple weeks. I could barely handle putting the shit in the back! I did help out, but it was painful af, and I didn’t really do shit.

What’s up with your back? I have constant back pain, some days worse than others but I always have to use a small pillow when I’m sitting, right in the small of my back. I ice it a couple times a day and use Biofreeze too. It was screaming tonight after I moved a few 6’ pieces of old telephone poles in my back yard and then spent hours hunched over a gate I built today. So I did a 20 minute hot soak in the tub and I’m turning in early. Sucks.

 

[blueinkd]

Oh man...! It is awesome! I didn’t have much time to do anything yesterday, what with parental / husband-type obligations and such, but today, I took her for a ride down a road nearby, called “Riverdale”. Folks who live around here know the road, as it’s supposedly haunted, but I’ve always enjoyed the curves. Though, I haven’t really driven quickly on this road with the Yukon, I used to drive 80+ on it in my Civic.

So I decided to try it out today. I should have done a before / after, but hadn’t thought about it.

But I can say, she is PLANTED to the road!! I could have gone much faster, but there was some traffic, and like I said, haven’t driven it in years, and never (quickly) with this truck.

Nonetheless, I was able to hit some corners at 65-70+ and not even break a sweat. If there had been less traffic, I would have tried a bit harder, but I was seriously floored with how well she corners now! Also keep in mind, I’m at stock height rear, with the front cranked, to level.

I have a dash cam video, but it’s pretty long, and annoyingly, you can hear my dumb ass bitching about other drivers.. lol! Lmk if you really want to see it, and I’ll share.

Oh man!! U making me want to order a set!! But dsmn I just can't got way too many parts in boxes on the floor right now!! Haha! I need to install the upper controls arm, lower ball joints, decide which brake setup I install, etc. Glad it's worth the investment