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

[j91z28d1]

Yeah, I hear you. I have to make so many grown up decisions at work, sometimes I just want someone to point at the tuning I'm curious about, and say, "just do it, it's fine".

I feel like we need specific test per engine.

like these have lifter issues. sticking and rollers galling up. Just tell me which oil has the best surface metal to metal lubricant. they don't really have issues with the pressurized mains and rod bearings. so seems a oil formulated for surface friction and to stop varnash build up in the lifter would make this easier lol.

 

[dkad260]

Ordered the transfer case bearing and chain kit for the Borg Warner 4485 in the 2012 Denali from Rigid Axle. Waiting on bushings from the dealer, hopefully everything is here before next weekend.

 

[mikez71]

Clearly the wiper leaves some sort of tracks.

Not scratches you say, Okay. So what is it?

 

[Rocket Man]

I hadn't mentioned the rear glass in my Tahoe, but it is indeed scratched. Again, no one is claiming the rubber scratches the glass. It's what the rubber is pushing/dragging that's scratching the glass. It's uniformly scratched across the width of blade, which is evident when direct light hits. I suppose I'll have to break out my DSLR and a macro lens if I care to prove that this is a thing for the doubters, but I really shouldn't have to.

The situations of metal-on-glass you mention would result in defined tracks of scratching (as has happened with the windshield of my '57 Bel Air), which is not what we're discussing.

EDIT to add:

What are wiper marks - DetailingWiki, the free wiki for detailers

Wiper marks are surface imperfections in the direction and line that windscreen wipers move. Simply put, these are marks in the glass caused by the movement of the windscreen wipers. They can affect your vision and are difficult te remove.

www.detailingwiki.org

This is true but if you notice the marks are visible on the rear glass usually because they’re run continuously without water aka left in delay mode and no rain. i see it all the time and is why I removed the rear wiper on my 02, they're never used and when they are nobody uses the washer and they are run dry. A lot. But if the single upward stroke of the wipers is what you’re concerned with….jeez there’s plenty of worse things happening to your truck that you’d better worry about. But hey, have at it. Worry away! And also…I’m sure in 17 years your windshield wont have wiper marks in it, just like mine didn’t when it was replaced this summer. And my wipers were unmodified. Go figure.

Edit: actually, adding water might make it more likely to scratch the glass. The sand and grit can be mixed into a slurry or be more likely to be pulled under the wiper blade instead of being pushed off it when it’s dry. If something gets caught under the blade, for example, and is being drug back and forth, it’s more likely to scratch than if it’s just pushed ahead of the wiper blade. I think the rear glass shows more because it’s tempered and the front is laminated but in all reality tempered is supposed to be harder than lami. But auto manufacturers are tight lipped about their windshields.

 

[Rocket Man]

Clearly the wiper leaves some sort of tracks.

Not scratches you say, Okay. So what is it?

Scratches

 

[Rocket Man]

My last thought on wipers and scratches is I feel if a person keeps their rig’s exterior reasonably clean, you wont have to worry about it. i regularly wash mine by hand and make sure to use extra water to flush out every crack and of course the wipers and cowl. If there’s grit and grime around your windshield or if you live in an area with bad winter driving, there’s where your damage is coming from most likely. The slush and crap thrown onto the glass is going to scratch it eventually and water from one stroke of the wipers isn’t going to help. You’d need a big bucket of water up there every time something splashed onto it.

 

[mikez71]

But if the single upward stroke of the wipers is what you’re concerned with….jeez there’s plenty of worse things happening to your truck that you’d better worry about. But hey, have at it. Worry away! And also…I’m sure in 17 years your windshield wont have wiper marks in it, just like mine didn’t when it was replaced this summer. And my wipers were unmodified. Go figure.

Edit: actually, adding water might make it more likely to scratch the glass. The sand and grit can be mixed into a slurry or be more likely to be pulled under the wiper blade instead of being pushed off it when it’s dry.

You should delete your washer bottle!

You seem to be worried that some want to prevent imaginary scratches..

I'm sure in 17 years it will be scratched, but maybe less scratched.
What's the big drawback again?

i regularly wash mine by hand and make sure to use extra water to flush out every crack and of course the wipers and cowl.

Cool, but I don't... and it is always dusty here.
So for whatever worrisome reason, I personally would feel better.
I imagine some other factory vehicles are like this.. so why did they do it?

 

[Sir_Hiro]

I hate it. the more you learn the more you don't know what to use.

Truest Quote of all time about anything.

 

[Charlie207]

Truest Quote of all time about anything.

Unknown unknows....


Anyways, look... there's oil in Nigeria!

 

[Sir_Hiro]

Unknown unknows....


Anyways, look... there's oil in Nigeria!

I got an email about that..I just have to invest 30K and I'm guaranteed 1Mill return! They said so!

 

[Rocket Man]

You should delete your washer bottle!

You seem to be worried that some want to prevent imaginary scratches..
View attachment 471495

I'm sure in 17 years it will be scratched, but maybe less scratched.
What's the big drawback again?


Cool, but I don't... and it is always dusty here.
So for whatever worrisome reason, I personally would feel better.
I imagine some other factory vehicles are like this.. so why did they do it?

Ummm….because it doesn’t matter?

 

[mikez71]

If it doesn't matter to you, but it matters to me...the smart thing for GM to do, is make them the way I want.

Then everyone can be happy

 

[kbuskill]

I personally don't think that pre spraying the windshield is going to make a big difference long term, but it certainly isn't going to hurt anything. I like to tinker and re-engineer things as well.

If I didn't think I would ever get another rock chip or broken windshield I would probably be much more likely to invest the time to figure out how to pre-spray the windshield. Unfortunately that doesn't seem to be a reality for me.

I had the windshield in my Honda Civic replaced back in May after a truck pulling an enclosed trailer slung a ratchet strap handle up into the middle of my windshield and left about a 4"- 6" crater right in the driver's field of view.

Got it replaced and got the windshield re-tinted with 50% ceramic film again and just the other day it caught a rock or something right at the lower driver's side edge and it has already cracked out probably 10"- 12". I will live with it for a while.

Also, just had the windshield replaced in the Burb where a previous rock chip repair started cracking out. New windshield and new 50% ceramic film on it just a couple weeks ago. I am still waiting for the check from the insurance company to reimburse me for the window tint on this one.

Such is life I guess.

 

[mikez71]

Naysayers are reminding me of my daddy.. often said to me... 'I don't know WHY you are lowering your car!" (chinese accent)
Well he was right of course, we are all just wasting time here...

Probably doesn't help with wiper blade condition, hard to imagine window washers going at it with a dry blade first?
I'm trying to understand GM's reason.. aaaarghhhhhhhh!
Don't stress out! I promise I WON'T mention it again.. *shhhh* what wiper? no wiper here. go away

 

[91RS]

it's a 2011 yukon denali hybrid with a NQH rpo code which I believe is the t case.


yeah, I used amsoil version of dex 6 for the tranny. after a 10k mile flush with normal gm branded atf.

Sorry, I super squirreled on this but, yes, the NQH takes Dex VI.

 

[Charlie207]

I personally don't think that pre spraying the windshield is going to make a big difference long term, but it certainly isn't going to hurt anything. I like to tinker and re-engineer things as well.

If I didn't think I would ever get another rock chip or broken windshield I would probably be much more likely to invest the time to figure out how to pre-spray the windshield. Unfortunately that doesn't seem to be a reality for me.

I had the windshield in my Honda Civic replaced back in May after a truck pulling an enclosed trailer slung a ratchet strap handle up into the middle of my windshield and left about a 4"- 6" crater right in the driver's field of view.

Got it replaced and got the windshield re-tinted with 50% ceramic film again and just the other day it caught a rock or something right at the lower driver's side edge and it has already cracked out probably 10"- 12". I will live with it for a while.

Also, just had the windshield replaced in the Burb where a previous rock chip repair started cracking out. New windshield and new 50% ceramic film on it just a couple weeks ago. I am still waiting for the check from the insurance company to reimburse me for the window tint on this one.

Such is life I guess.

Pre-spraying certainly helps clear the frost off the windshield, and limits the wear/tear of the blades dragging across the ice.

On my old cars that let you bump the washer nozzles without activating the arms, you could get a decent amount of frost/ice melted, or at least softened, before wiping anything.

Its also super helpful in soaking bug guts for a bit before smearing their bodies all over the glass.

 

[Rocket Man]

Pre-spraying certainly helps clear the frost off the windshield, and limits the wear/tear of the blades dragging across the ice.

On my old cars that let you bump the washer nozzles without activating the arms, you could get a decent amount of frost/ice melted, or at least softened, before wiping anything.

Its also super helpful in soaking bug guts for a bit before smearing their bodies all over the glass.

i do miss the old style squirters where you could just hold down the button and spray away without the wipers even being on. I also miss the old vent windows that you could turn backwards and they would turn into super ventilators if youre old enough to remember those. But I dont see either of them coming back anytime soon.

 

[mikez71]

i do miss the old style squirters where you could just hold down the button and spray away without the wipers even being on.

What you miss about old sprayers.. is what I'm doing.. FYI.
I'll call it a nostalgia mod if you still insist there is no value.

Also miss the fresh air vent that was manually controlled.. Don't need no computer telling me when I can and can't ventilate.. Ridiculous!

 

[Charlie207]

What you miss about old sprayers.. is what I'm doing.. FYI.
I'll call it a nostalgia mod if you still insist there is no value.

Also miss the fresh air vent that was manually controlled.. Don't need no computer telling me when I can and can't ventilate.. Ridiculous!

Or high-beams that turn ON/OFF by pulling back....

GM is dumb.

 

[kbuskill]

Or high-beams that turn ON/OFF by pulling back....

GM is dumb.

I always liked the foot operated high beams. I have considered adding one to the Burb and hooking it up to my light bar or something.