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

[mikez71]

Found out my stock swaybar bushings were squeaky.. Broke one of my front swaybar bracket bolts.

Ordered some new bolts.. and still have to drill out the broken one.. but

My upper balljoints are both stuck. Any tips on removing them?

Watching videos, I may just need a bigger hammer. I will forego the double hammer method, and get a bigger hammer next outing..
Swapping lift spacers again, the 2.5" are too close for my liking and I decided to run a 1.5" - 2.0" lift in front and nothing in rear

full droop 2.5" lift (1.25" thick), drove ok. !?

smaller hardware in the generic 2.5" kit than the roughcountry 2" hardware, smaller head, slightly smaller thread diameter.

rears with a 1" spacer seemed to bottom the shocks with stock z71 suspension... rear spacers now removed..

 

[gooffeyguy]

Found out my stock swaybar bushings were squeaky.. Broke one of my front swaybar bracket bolts.
View attachment 436788

Ordered some new bolts.. and still have to drill out the broken one.. but

My upper balljoints are both stuck. Any tips on removing them?

Watching videos, I may just need a bigger hammer. I will forego the double hammer method, and get a bigger hammer next outing..
Swapping lift spacers again, the 2.5" are too close for my liking and I decided to run a 1.5" - 2.0" lift in front and nothing in rear

full droop 2.5" lift (1.25" thick), drove ok. !?

View attachment 436789
smaller hardware in the generic 2.5" kit than the roughcountry 2" hardware, smaller head, slightly smaller thread diameter.

rears with a 1" spacer seemed to bottom the shocks with stock z71 suspension... rear spacers now removed..

That bolt head is definitely rubbing that axle shaft.

You can also get spacers for the top of the strut, so you don't have to run as large of one on the bottom and still get the lift you want.

 

[j91z28d1]

I just lubed my stock 160k mile ones. with the energy suspension lube, it's this crazy thick water proof silicone based stuff. they didn't have any crack or anything. Just a little squeaky when cold in the morning. could have been the end links. I did both.

ball joints, I have not done these but I'm guessing you have the big c clamp thing and a impact?

 

[mikez71]

That bolt head is definitely rubbing that axle shaft.

You can also get spacers for the top of the strut, so you don't have to run as large of one on the bottom and still get the lift you want.

I clocked the bolt head to minimize interference, with the smaller Motofab 2.5" bolt heads than the rough country 2" bolts..
a little space between with wheels on ground...

But yeah I'm going back down to stock level heights..
Going to try an ebay 22mm spacer vs the RoughCountry 25.4mm spacer (2" lift?) I had before for slightly more relaxed angles and little bit of rake.

 

[Grady_Wilson]

Stuff like this is why I don't really mess with suspension mods anymore.
Back in the day I had stuff lowered but I never went crazy and always researched the crap out of everything before I dove in.
The last personal vehicle I did mods on was my 2002 Altima, but it was only lowered .5 in in the rear and 1.5 in in the front to even out the fender gap and provide better high speed stability.
It is rock solid at 130mph.

 

[mikez71]

Stuff like this is why I don't really mess with suspension mods anymore.

I hear ya! I'm tired of it myself, but I'm glad I got level at least. With the 22mm front spacer, no spacer in back.

 

[89Suburban]

Installed Flowmaster Super 40 Saturday night after working in the morning and taking a power nap in the afternoon. I did a lot of research and was expecting the front of muffler pipe to be 2.75" od and behind it 3" od. NOPE. 2.5" od both ends. Which in return means pissing away money on 3" ID Flowmaster muffler and adapter pipes and adapters and SS band clamps for each calculated connection that all went to SHIT. And 3 to 2.75" adapter is so short it leaves no room for band clamps. So I had to order old skool pinch clamps. Just a cluster FK.

Hard lessons learned, and more money spent for the Amazon ordered expected right parts and clamps to be delivered tomorrow on a holiday to try and get my stuff right. Got a self tapper screw holding SLP tailpipe to the muffler extension. WOW. I tried to put 2 in and one broke off so I have to fight that bastard out too.

And hot and humid as hell. Bugs and mosquitoes. FK.

 

[RooTBeeRthe1st]

I hear ya! I'm tired of it myself, but I'm glad I got level at least. With the 22mm spacer.

View attachment 436825

View attachment 436824

What kind of fender flares are those? Haven't seen any like that without visible hardware

 

[mikez71]

What kind of fender flares are those? Haven't seen any like that without visible hardware

They are stock z71 flares.

 

[Charlie207]

Installed Flowmaster Super 40 Saturday night after working in the morning and taking a power nap in the afternoon. I did a lot of research and was expecting the front of muffler pipe to be 2.75" od and behind it 3" od. NOPE. 2.5" od both ends. Which in return means pissing away money on 3" ID Flowmaster muffler and adapter pipes and adapters and SS band clamps for each calculated connection that all went to SHIT. And 3 to 2.75" adapter is so short it leaves no room for band clamps. So I had to order old skool pinch clamps. Just a cluster FK.

Hard lessons learned, and more money spent for the Amazon ordered expected right parts and clamps to be delivered tomorrow on a holiday to try and get my stuff right. Got a self tapper screw holding SLP tailpipe to the muffler extension. WOW. I tried to put 2 in and one broke off so I have to fight that bastard out too.

And hot and humid as hell. Bugs and mosquitoes. FK.

When my factory cathback started leaking I replaced it with this system, and upgraded the muffler.

Pardon Our Interruption...

It's holding up fine with salty winters, so I'd buy it again. I did swap out the crush clamps with 3" lap clamps.

Pardon Our Interruption...

And, a new Walker clamp off the 3rd cat. The rubber hangers were still in perfect shape so I just reused those. The tip that comes with the kit is kind of dumb, so I found a SS turn-down to stick on.

 

[RooTBeeRthe1st]

They are stock z71 flares.

I guess I've just never payed that close attention before.

 

[mikez71]

yea.. they dont add much width, if any!.. Pocket flares look a lot tougher/bigger.

I do like the rectangle fogs of the z71 package tho.

 

[gooffeyguy]

Filled up with 26.5 gallons of E85 @ $2.72/gallon

 

[j91z28d1]

I snipped the wire holding my exhaust valve open.. didn't see any change in anything. looking at timing retard for 93 and 87, flashed 2 different timing maps. fuel mileage seems the same, power felt the same. kinda weird, I'd have thought reducing exhaust restriction would have showed up somewhere.

it did change the exhaust sound just enough I heard it at times I didn't before and it annoyed me enough to close it back up since I couldn't find any benefit. all back to magic carpet ride quiet

 

[mikez71]

Thinking about lowering my Z71 (stock suspension?) with some new PPV wheels..
Wanted to stick with 17's, but bored.. Bigger brakes wouldn't hurt..

Someone get these wheels on a 07-14 so I can see what they look like!

 

[Just Fishing]

Well over the weekend I got the new magnaflow cat/Y pipe installed.
It went really smoothly, and I like how they have the disconnect between the two sides, it made installing a little easier.

They also re designed it a little, and it doesn't hug the transmission pan so tightly.
I bet I could pull the pan w/o raising the transmission or lowering the exhaust.

I do worry about it hitting stuff offroad, but it's not hanging down too far so hopefully not.


In theory the Y is a better design vs the stock one, so I'm hoping for a little better flow.
but then the pipe after the Y appears to be smaller than the OEM, so I dnk.

The one for the magnaflow 6.2l was a bit bigger.
Oh well, the real test will be how it tows the boat up the canyon.


And had to reset the battery, the asshats were dicking around with my O2 sensor leads.
One ready to get caught on the front driveshaft.
Assholes!

so now I have every monitor to ready except for the O2 sensor monitor and the evap.
Doing a drive cycle every morning before it hits 80f, usually I can get all to go except the evap, but not this time!

Figuring I'll just need to do some normal driving, and if all else fails I'll just say fk it and go boating!!

 

[Just Fishing]

It's also getting close to the time when I need to buy new tires for the hoe.
Maybe go a tiny bit larger?
275/60R20?

 

[Grady_Wilson]

The taller sidewall will throw off your speedo unless you can recalibrate it.
Better ride quality, in general, but also more sidewall to squirm when going around a corner.

 

[Just Fishing]

HPTuners should be able to do it, however I haven't used it for that yet.

 

[j91z28d1]

HPTuners should be able to do it, however I haven't used it for that yet.

yeah hp can adjust the speedo. it's surprising easy. they have a little utility you put your speedo speed in, GPS speed in and it tells you what to change the number to.