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

[blueinkd]

Well....I started the teardown today. Doing it myself as I can't justify $2400 for something I can do myself. Got the intake loose and ready to remove in less than an hour. Didn't want to strip it and leave it open tonight. Will resume back tomorrow after work and hopefully be done Saturday afternoon. I should have started back on Monday=/ but I been busy after work with the family. ProComp valve spring tool will be here tomorrow as well.

 

[clandr1]

Well, she had to be towed for the first time in her life today. I lost a drive shaft u joint cap at 75mph. I heard a “BAM” followed by a ton of shaking. Thankfully a new u joint fixed her right up and no lasting damage from the vibration is apparent after an 80mph test drive.

 

[MassHoe04]

Well, she had to be towed for the first time in her life today. I lost a drive shaft u joint cap at 75mph. I heard a “BAM” followed by a ton of shaking. Thankfully a new u joint fixed her right up and no lasting damage from the vibration is apparent after an 80mph test drive.

View attachment 397826

Amazing how much that tiny amount of weight can make things vibrate and shake when it flies off!

 

[Fless]

Well, she had to be towed for the first time in her life today. I lost a drive shaft u joint cap at 75mph. I heard a “BAM” followed by a ton of shaking. Thankfully a new u joint fixed her right up and no lasting damage from the vibration is apparent after an 80mph test drive.

View attachment 397826View attachment 397827View attachment 397829

Good thing it didn't drop the shaft!

 

[mattbta]

Well, she had to be towed for the first time in her life today. I lost a drive shaft u joint cap at 75mph. I heard a “BAM” followed by a ton of shaking. Thankfully a new u joint fixed her right up and no lasting damage from the vibration is apparent after an 80mph test drive.

View attachment 397827

Look at that shine!

 

[clandr1]

Amazing how much that tiny amount of weight can make things vibrate and shake when it flies off!

If I’m being completely honest, I replaced my factory U joints in October 2020 and at the time I remember one of the caps not going on smoothly. I probably caused this myself by not taking the time to make sure it was 100% correct at the time. Oh well, to err is human, I suppose.

 

[treehan77]

Started it up this morning to go rent a lawn aerator. Massive annoying loud whine through the stereo (left speaker only). Was really annoying. Thankfully disconnected the large connector under the cup holder and reconnecting it solved it. I’ll probably disconnect it again and spray some Deoxit if it happens again.

 

[MassHoe04]

Started it up this morning to go rent a lawn aerator. Massive annoying loud whine through the stereo (left speaker only). Was really annoying. Thankfully disconnected the large connector under the cup holder and reconnecting it solved it. I’ll probably disconnect it again and spray some Deoxit if it happens again.

If easy enough to do, maybe just hose the connectors down Deoxit anyway. Won't hurt to clean up the contacts even more.

 

[treehan77]

If easy enough to do, maybe just hose the connectors down Deoxit anyway. Won't hurt to clean up the contacts even more.

Yeah, it was so bad I had to do it in the parking lot before I went home haha

 

[blueinkd]

Both heads at the machine shop for a valve job and cleaning. Having them replace the valve stem seals and new springs as well. Should have them back Tuesday. One of my lifters had pitting on the roller, causing the noise.

 

[mattbta]

Both heads at the machine shop for a valve job and cleaning. Having them replace the valve stem seals and new springs as well. Should have them back Tuesday. One of my lifters had pitting on the roller, causing the noise.

Fancy AIR block off on those headers!

 

[blueinkd]

Fancy AIR block off on those headers!

My buddy had them laying around when I needed the broken exhaust bolts extracted. The Dorman cheater clamps are pure garbage. Couldn't pass them up cause he threw them on for dirt.

 

[blueinkd]

Here's the root of my noise...machine shop will have heads done on Tuesday. Simple clean up and valve job. Should have her done next weekend

 

[blueinkd]

The TBSS swap will have to wait as there are too many unknowns to figure out for my 05 tahoe. Hate that I have to find new rails, injectors and tb just to make it work.

 

[Sam Harris]

The TBSS swap will have to wait as there are too many unknowns to figure out for my 05 tahoe. Hate that I have to find new rails, injectors and tb just to make it work.

Same. This is why mine was put on the back burner while I did the other engine work.

 

[blueinkd]

Same. This is why mine was put on the back burner while I did the other engine work.

I also don't think it's worth the $500-600 in these items for the 10-15 rwhp it will offer me. Unless I'm seeing it all wrong.

 

[iamdub]

I also don't think it's worth the $500-600 in these items for the 10-15 rwhp it will offer me. Unless I'm seeing it all wrong.

$500-$600? Aren't these things just stock GenIV intakes? I've seen complete take-off NNBS manifolds for as little as $40 here. Average is $100-$150. Sure, you might need a particular TB, but that's a salvage yard part, too. Injectors rarely go bad and just get dirty at worst. If you wanna start fresh, a cleaning/refurbing service is $200 or less and they'll be like new with a printout of their test results.

 

[clandr1]

Took my oldest son to a Rangers baseball game today, and on the way had to stop by the plant in Arlington and get a pic of where my truck was built.

 

[Fless]

Installed two new StrongArm (no, not Franklin D. Azar) liftgate struts. Now it raises by itself when I unlatch it. The cold temps in winter will be the real test.

 

[Sam Harris]

Installed two new StrongArm (no, not Franklin D. Azar) liftgate struts. Now it raises by itself when I unlatch it. The cold temps in winter will be the real test.

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I need to do this as well. Thanks for being the guinea pig.. or have you seen good reviews of these elsewhere?